[INFO] fetching crate tagref 1.5.0...
[INFO] testing tagref-1.5.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate tagref 1.5.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate tagref 1.5.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-3/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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3913512764e8f8a4f1c3e9bc53987f1145147beae1adc8b9d6c1621e07d7cc67
[INFO] running `Command { std: "docker" "start" "-a" "3913512764e8f8a4f1c3e9bc53987f1145147beae1adc8b9d6c1621e07d7cc67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3913512764e8f8a4f1c3e9bc53987f1145147beae1adc8b9d6c1621e07d7cc67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3913512764e8f8a4f1c3e9bc53987f1145147beae1adc8b9d6c1621e07d7cc67", kill_on_drop: false }`
[INFO] [stdout] 3913512764e8f8a4f1c3e9bc53987f1145147beae1adc8b9d6c1621e07d7cc67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d421b17751acff77f40523047e17711b6cad3d70b999c7f975798e92eca99098
[INFO] running `Command { std: "docker" "start" "-a" "d421b17751acff77f40523047e17711b6cad3d70b999c7f975798e92eca99098", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling bstr v0.2.15
[INFO] [stderr]    Compiling globset v0.4.6
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling ignore v0.4.17
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling tagref v1.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.43s
[INFO] running `Command { std: "docker" "inspect" "d421b17751acff77f40523047e17711b6cad3d70b999c7f975798e92eca99098", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d421b17751acff77f40523047e17711b6cad3d70b999c7f975798e92eca99098", kill_on_drop: false }`
[INFO] [stdout] d421b17751acff77f40523047e17711b6cad3d70b999c7f975798e92eca99098
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52705afcdbe9bed25f087be2e00d619354a0e53a50990c736d061a972f512a9d
[INFO] running `Command { std: "docker" "start" "-a" "52705afcdbe9bed25f087be2e00d619354a0e53a50990c736d061a972f512a9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling tagref v1.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.48s
[INFO] running `Command { std: "docker" "inspect" "52705afcdbe9bed25f087be2e00d619354a0e53a50990c736d061a972f512a9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52705afcdbe9bed25f087be2e00d619354a0e53a50990c736d061a972f512a9d", kill_on_drop: false }`
[INFO] [stdout] 52705afcdbe9bed25f087be2e00d619354a0e53a50990c736d061a972f512a9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 19d64cb23e9277c5ca29c87f0ac80663fef17a4f9e95f17658c1d5ffe103975f
[INFO] running `Command { std: "docker" "start" "-a" "19d64cb23e9277c5ca29c87f0ac80663fef17a4f9e95f17658c1d5ffe103975f", 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-f14bf3258862f662)
[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_no_dupes ... ok
[INFO] [stdout] test duplicates::tests::check_dupes ... ok
[INFO] [stdout] test references::tests::check_empty ... ok
[INFO] [stdout] test label::tests::parse_multiple_lines ... ok
[INFO] [stdout] test label::tests::parse_multiple_per_line ... ok
[INFO] [stdout] test references::tests::check_missing ... ok
[INFO] [stdout] test references::tests::check_ok ... ok
[INFO] [stdout] test label::tests::parse_empty ... ok
[INFO] [stdout] test label::tests::parse_tag_basic ... ok
[INFO] [stdout] test label::tests::parse_whitespace ... ok
[INFO] [stdout] test label::tests::parse_ref_basic ... ok
[INFO] [stdout] test label::tests::parse_case ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "19d64cb23e9277c5ca29c87f0ac80663fef17a4f9e95f17658c1d5ffe103975f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19d64cb23e9277c5ca29c87f0ac80663fef17a4f9e95f17658c1d5ffe103975f", kill_on_drop: false }`
[INFO] [stdout] 19d64cb23e9277c5ca29c87f0ac80663fef17a4f9e95f17658c1d5ffe103975f