[INFO] fetching crate linear 0.2.0...
[INFO] testing linear-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate linear 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate linear 0.2.0 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 linear 0.2.0
[INFO] finished tweaking crates.io crate linear 0.2.0
[INFO] tweaked toml for crates.io crate linear 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 04316cd77247a821c6103e3c813a7db903630602fc3d972e987d2f8f3c852f12
[INFO] running `Command { std: "docker" "start" "-a" "04316cd77247a821c6103e3c813a7db903630602fc3d972e987d2f8f3c852f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04316cd77247a821c6103e3c813a7db903630602fc3d972e987d2f8f3c852f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04316cd77247a821c6103e3c813a7db903630602fc3d972e987d2f8f3c852f12", kill_on_drop: false }`
[INFO] [stdout] 04316cd77247a821c6103e3c813a7db903630602fc3d972e987d2f8f3c852f12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] d36023441ae5c1858c3c0875e3c3fde12ea94b566dbf0777117c89fee42e4ff9
[INFO] running `Command { std: "docker" "start" "-a" "d36023441ae5c1858c3c0875e3c3fde12ea94b566dbf0777117c89fee42e4ff9", kill_on_drop: false }`
[INFO] [stderr]    Compiling linear v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "d36023441ae5c1858c3c0875e3c3fde12ea94b566dbf0777117c89fee42e4ff9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d36023441ae5c1858c3c0875e3c3fde12ea94b566dbf0777117c89fee42e4ff9", kill_on_drop: false }`
[INFO] [stdout] d36023441ae5c1858c3c0875e3c3fde12ea94b566dbf0777117c89fee42e4ff9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] eb3e80784f95c6b344db6b4ba31ea5ee1d87951ebef20d7d861954f1d1ba32b3
[INFO] running `Command { std: "docker" "start" "-a" "eb3e80784f95c6b344db6b4ba31ea5ee1d87951ebef20d7d861954f1d1ba32b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling linear v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "eb3e80784f95c6b344db6b4ba31ea5ee1d87951ebef20d7d861954f1d1ba32b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb3e80784f95c6b344db6b4ba31ea5ee1d87951ebef20d7d861954f1d1ba32b3", kill_on_drop: false }`
[INFO] [stdout] eb3e80784f95c6b344db6b4ba31ea5ee1d87951ebef20d7d861954f1d1ba32b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 9498ac997a84ec4b55cabdbd9221b403460be46b9e2eaa54bd47f6eba4f3def9
[INFO] running `Command { std: "docker" "start" "-a" "9498ac997a84ec4b55cabdbd9221b403460be46b9e2eaa54bd47f6eba4f3def9", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/linear-df0e682fe02d71a6)
[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] [stderr]    Doc-tests linear
[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" "9498ac997a84ec4b55cabdbd9221b403460be46b9e2eaa54bd47f6eba4f3def9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9498ac997a84ec4b55cabdbd9221b403460be46b9e2eaa54bd47f6eba4f3def9", kill_on_drop: false }`
[INFO] [stdout] 9498ac997a84ec4b55cabdbd9221b403460be46b9e2eaa54bd47f6eba4f3def9