$ sudo port install carthage
--->  Computing dependencies for carthage
--->  Fetching archive for carthage
--->  Attempting to fetch carthage-0.33.0_0.darwin_17.x86_64.tbz2 from http://ywg.ca.packages.macports.org/mirror/macports/packages/carthage
--->  Attempting to fetch carthage-0.33.0_0.darwin_17.x86_64.tbz2 from https://packages.macports.org/carthage
--->  Attempting to fetch carthage-0.33.0_0.darwin_17.x86_64.tbz2 from http://aus.us.packages.macports.org/macports/packages/carthage
--->  Fetching distfiles for carthage
--->  Verifying checksums for carthage
--->  Extracting carthage
--->  Configuring carthage
--->  Building carthage
--->  Staging carthage into destroot
Error: Failed to destroot carthage: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
Error: Processing of port carthage failed

$ sudo port -d install carthage
DEBUG: Copying /Users/Username/Library/Preferences/com.apple.dt.Xcode.plist to /opt/local/var/macports/home/Library/Preferences
DEBUG: Changing to port directory: /opt/local/var/macports/sources/rsync.macports.org/macports/release/tarballs/ports/devel/carthage
DEBUG: OS darwin/17.7.0 (Mac OS X 10.13) arch i386
DEBUG: Sourcing PortGroup github 1.0 from /opt/local/var/macports/sources/rsync.macports.org/macports/release/tarballs/ports/_resources/port1.0/group/github-1.0.tcl
DEBUG: Re-registering default for livecheck.regex
DEBUG: Reading variant descriptions from /opt/local/var/macports/sources/rsync.macports.org/macports/release/tarballs/ports/_resources/port1.0/variant_descriptions.conf
DEBUG: universal_variant is false, so not adding the default universal variant
DEBUG: Running callback portconfigure::add_automatic_compiler_dependencies
DEBUG: Finished running callback portconfigure::add_automatic_compiler_dependencies
DEBUG: Running callback portbuild::add_automatic_buildsystem_dependencies
DEBUG: Finished running callback portbuild::add_automatic_buildsystem_dependencies
DEBUG: Running callback portstartupitem::add_notes
DEBUG: Finished running callback portstartupitem::add_notes
DEBUG: dropping privileges: euid changed to 502, egid changed to 501.
DEBUG: Starting logging for carthage
DEBUG: macOS 10.13 (darwin/17.7.0) arch i386
DEBUG: MacPorts 2.5.4
DEBUG: Xcode 10.1
DEBUG: SDK 10.13
DEBUG: MACOSX_DEPLOYMENT_TARGET: 10.13
DEBUG: Found Dependency: path: /usr/bin filename: git regex: ^git$
--->  Computing dependencies for carthage
DEBUG: carthage has no conflicts
DEBUG: Found Dependency: path: /usr/bin filename: git regex: ^git$
DEBUG: Searching for dependency: git
DEBUG: Didn't find receipt, going to depspec regex for: git
DEBUG: Found Dependency: path: /usr/bin filename: git regex: ^git$
DEBUG: Executing org.macports.main (carthage)
DEBUG: dropping privileges: euid changed to 502, egid changed to 501.
DEBUG: Skipping completed org.macports.archivefetch (carthage)
DEBUG: Privilege de-escalation not attempted as not running as root.
DEBUG: Skipping completed org.macports.fetch (carthage)
DEBUG: Privilege de-escalation not attempted as not running as root.
DEBUG: Skipping completed org.macports.checksum (carthage)
DEBUG: Privilege de-escalation not attempted as not running as root.
DEBUG: Skipping completed org.macports.extract (carthage)
DEBUG: Privilege de-escalation not attempted as not running as root.
DEBUG: Skipping completed org.macports.patch (carthage)
DEBUG: Privilege de-escalation not attempted as not running as root.
DEBUG: Skipping completed org.macports.configure (carthage)
DEBUG: Privilege de-escalation not attempted as not running as root.
DEBUG: Skipping completed org.macports.build (carthage)
DEBUG: Privilege de-escalation not attempted as not running as root.
DEBUG: destroot phase started at Sun Jul 21 11:52:17 MST 2019
--->  Staging carthage into destroot
DEBUG: Can't run destroot under sudo without elevated privileges (due to mtree).
DEBUG: Run destroot without sudo to avoid root privileges.
DEBUG: Going to escalate privileges back to root.
DEBUG: euid changed to: 0. egid changed to: 0.
DEBUG: system -W /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/destroot: /usr/sbin/mtree -e -U -f /opt/local/share/macports/install/macosx.mtree
. missing (directory not created: File exists)
./Applications missing (directory not created: File exists)
./Developer missing (directory not created: File exists)
./Library missing (directory not created: File exists)
DEBUG: system -W /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/destroot/opt/local: /usr/sbin/mtree -e -U -f /opt/local/share/macports/install/prefix.mtree
DEBUG: Executing org.macports.destroot (carthage)
DEBUG: system -W /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/Carthage-0.33.0: /usr/bin/make prefix_install PREFIX=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/destroot/opt/local CARTHAGE_TEMPORARY_FOLDER=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/destroot SWIFTPM_DISABLE_SANDBOX_SHOULD_BE_FLAGGED=should_be_flagged
swift build --configuration release --disable-sandbox -Xswiftc -static-stdlib
Updating https://github.com/Carthage/ReactiveTask.git
Updating https://github.com/Quick/Nimble.git
Updating https://github.com/Carthage/Commandant.git
Updating https://github.com/mdiep/Tentacle.git
Updating https://github.com/Quick/Quick.git
Updating https://github.com/thoughtbot/Curry.git
Updating https://github.com/jdhealy/PrettyColors.git
Updating https://github.com/antitypical/Result.git
Updating https://github.com/apple/swift-package-manager.git
Updating https://github.com/ReactiveCocoa/ReactiveSwift.git
Updating https://github.com/apple/swift-llbuild.git
https://github.com/apple/swift-llbuild.git @ master: error: manifest parse error(s):
/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/.tmp/TemporaryFile.KVCq2e.swift:55:16: error: incorrect argument label in call (have 'name:dependencies:path:linkerSettings:', expected 'name:dependencies:path:exclude:')
        .target(
               ^
'Carthage' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/Carthage-0.33.0: error: product dependency 'Quick' not found
'Carthage' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/Carthage-0.33.0: error: product dependency 'Nimble' not found
'Carthage' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/Carthage-0.33.0: error: product dependency 'Tentacle' not found
'Carthage' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/Carthage-0.33.0: error: product dependency 'Curry' not found
'Carthage' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/Carthage-0.33.0: error: product dependency 'SwiftPM-auto' not found
'Carthage' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/Carthage-0.33.0: error: product dependency 'Result' not found
'Carthage' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/Carthage-0.33.0: error: product dependency 'ReactiveSwift' not found
'Carthage' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/Carthage-0.33.0: error: product dependency 'ReactiveTask' not found
'Carthage' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/Carthage-0.33.0: error: product dependency 'Quick' not found
'Carthage' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/Carthage-0.33.0: error: product dependency 'Nimble' not found
'Carthage' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/Carthage-0.33.0: error: product dependency 'Commandant' not found
'Carthage' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/Carthage-0.33.0: error: product dependency 'Curry' not found
'Carthage' /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/Carthage-0.33.0: error: product dependency 'PrettyColors' not found
make: *** [installables] Error 1
Command failed: /usr/bin/make prefix_install PREFIX=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/destroot/opt/local CARTHAGE_TEMPORARY_FOLDER=/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/work/destroot SWIFTPM_DISABLE_SANDBOX_SHOULD_BE_FLAGGED=should_be_flagged
Exit code: 2
Error: Failed to destroot carthage: command execution failed
DEBUG: Error code: NONE
DEBUG: Backtrace: command execution failed
    while executing
"$procedure $targetname"
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_devel_carthage/carthage/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.
Error: Processing of port carthage failed