[INFO] fetching crate tagref 1.5.0...
[INFO] testing tagref-1.5.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate tagref 1.5.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate tagref 1.5.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tagref 1.5.0
[INFO] finished tweaking crates.io crate tagref 1.5.0
[INFO] tweaked toml for crates.io crate tagref 1.5.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate tagref 1.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7af002e3a91b6d59c05b06d8c7a71ee09e91e7f620ecc961659eb4aa9a7f43f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f7af002e3a91b6d59c05b06d8c7a71ee09e91e7f620ecc961659eb4aa9a7f43f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7af002e3a91b6d59c05b06d8c7a71ee09e91e7f620ecc961659eb4aa9a7f43f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7af002e3a91b6d59c05b06d8c7a71ee09e91e7f620ecc961659eb4aa9a7f43f", kill_on_drop: false }`
[INFO] [stdout] f7af002e3a91b6d59c05b06d8c7a71ee09e91e7f620ecc961659eb4aa9a7f43f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aec996d216d0ba3e370c5d59446aed1b9ae781e17f9a8de711360854909f0536
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "aec996d216d0ba3e370c5d59446aed1b9ae781e17f9a8de711360854909f0536", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling bstr v0.2.15
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling globset v0.4.6
[INFO] [stderr]    Compiling ignore v0.4.17
[INFO] [stderr]    Compiling tagref v1.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.22s
[INFO] running `Command { std: "docker" "inspect" "aec996d216d0ba3e370c5d59446aed1b9ae781e17f9a8de711360854909f0536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aec996d216d0ba3e370c5d59446aed1b9ae781e17f9a8de711360854909f0536", kill_on_drop: false }`
[INFO] [stdout] aec996d216d0ba3e370c5d59446aed1b9ae781e17f9a8de711360854909f0536
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3688aa134ae97fb759ccc7ae5b6c704cbdd99b312b7373efd4a45b0d60d83c80
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3688aa134ae97fb759ccc7ae5b6c704cbdd99b312b7373efd4a45b0d60d83c80", kill_on_drop: false }`
[INFO] [stderr]    Compiling tagref v1.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.52s
[INFO] running `Command { std: "docker" "inspect" "3688aa134ae97fb759ccc7ae5b6c704cbdd99b312b7373efd4a45b0d60d83c80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3688aa134ae97fb759ccc7ae5b6c704cbdd99b312b7373efd4a45b0d60d83c80", kill_on_drop: false }`
[INFO] [stdout] 3688aa134ae97fb759ccc7ae5b6c704cbdd99b312b7373efd4a45b0d60d83c80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] af9a37d6577046ba591188e3f016857de5b1bebc86f5a7114d9c3ddf153616de
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "af9a37d6577046ba591188e3f016857de5b1bebc86f5a7114d9c3ddf153616de", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tagref-88db0743fc3e5bd1)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test count::tests::count_one ... ok
[INFO] [stdout] test count::tests::count_zero ... ok
[INFO] [stdout] test count::tests::count_two ... ok
[INFO] [stdout] test duplicates::tests::check_empty ... ok
[INFO] [stdout] test duplicates::tests::check_dupes ... ok
[INFO] [stdout] test duplicates::tests::check_no_dupes ... ok
[INFO] [stdout] test label::tests::parse_empty ... ok
[INFO] [stdout] test label::tests::parse_tag_basic ... ok
[INFO] [stdout] test label::tests::parse_case ... ok
[INFO] [stdout] test references::tests::check_missing ... ok
[INFO] [stdout] test references::tests::check_ok ... ok
[INFO] [stdout] test label::tests::parse_ref_basic ... ok
[INFO] [stdout] test label::tests::parse_multiple_per_line ... ok
[INFO] [stdout] test references::tests::check_empty ... ok
[INFO] [stdout] test label::tests::parse_whitespace ... ok
[INFO] [stdout] test label::tests::parse_multiple_lines ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "af9a37d6577046ba591188e3f016857de5b1bebc86f5a7114d9c3ddf153616de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af9a37d6577046ba591188e3f016857de5b1bebc86f5a7114d9c3ddf153616de", kill_on_drop: false }`
[INFO] [stdout] af9a37d6577046ba591188e3f016857de5b1bebc86f5a7114d9c3ddf153616de