[INFO] fetching crate linkage 0.0.0...
[INFO] testing linkage-0.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate linkage 0.0.0 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate linkage 0.0.0 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 linkage 0.0.0
[INFO] finished tweaking crates.io crate linkage 0.0.0
[INFO] tweaked toml for crates.io crate linkage 0.0.0 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate crates.io crate linkage 0.0.0 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-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] aed0e265d1363e6d076fb2480db6c54ef3b6af66457ae93dc6f324879c65a8b2
[INFO] running `Command { std: "docker" "start" "-a" "aed0e265d1363e6d076fb2480db6c54ef3b6af66457ae93dc6f324879c65a8b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aed0e265d1363e6d076fb2480db6c54ef3b6af66457ae93dc6f324879c65a8b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aed0e265d1363e6d076fb2480db6c54ef3b6af66457ae93dc6f324879c65a8b2", kill_on_drop: false }`
[INFO] [stdout] aed0e265d1363e6d076fb2480db6c54ef3b6af66457ae93dc6f324879c65a8b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 992a365b5c4be0010b3a5570627022ddf6d6d085b55f8c3cbd6342ad0a9632c1
[INFO] running `Command { std: "docker" "start" "-a" "992a365b5c4be0010b3a5570627022ddf6d6d085b55f8c3cbd6342ad0a9632c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling linkage v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "992a365b5c4be0010b3a5570627022ddf6d6d085b55f8c3cbd6342ad0a9632c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "992a365b5c4be0010b3a5570627022ddf6d6d085b55f8c3cbd6342ad0a9632c1", kill_on_drop: false }`
[INFO] [stdout] 992a365b5c4be0010b3a5570627022ddf6d6d085b55f8c3cbd6342ad0a9632c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 214ca7acd8b2a1bdbe0187c412c2cc12ea639a73b449776f38380b8eb13c8b06
[INFO] running `Command { std: "docker" "start" "-a" "214ca7acd8b2a1bdbe0187c412c2cc12ea639a73b449776f38380b8eb13c8b06", kill_on_drop: false }`
[INFO] [stderr]    Compiling linkage v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "214ca7acd8b2a1bdbe0187c412c2cc12ea639a73b449776f38380b8eb13c8b06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "214ca7acd8b2a1bdbe0187c412c2cc12ea639a73b449776f38380b8eb13c8b06", kill_on_drop: false }`
[INFO] [stdout] 214ca7acd8b2a1bdbe0187c412c2cc12ea639a73b449776f38380b8eb13c8b06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 1723e1335d6ec500bf8ac7d1b7e3472b0a9123e704617b8ed9cb87a3a23e43c3
[INFO] running `Command { std: "docker" "start" "-a" "1723e1335d6ec500bf8ac7d1b7e3472b0a9123e704617b8ed9cb87a3a23e43c3", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/main-f1bc494ff183eaab)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1723e1335d6ec500bf8ac7d1b7e3472b0a9123e704617b8ed9cb87a3a23e43c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1723e1335d6ec500bf8ac7d1b7e3472b0a9123e704617b8ed9cb87a3a23e43c3", kill_on_drop: false }`
[INFO] [stdout] 1723e1335d6ec500bf8ac7d1b7e3472b0a9123e704617b8ed9cb87a3a23e43c3