[INFO] fetching crate step_polyfill 0.1.0...
[INFO] building step_polyfill-0.1.0 against master#222c5724ecc922fe67815f428c19f82c129d9386 for pr-97334
[INFO] extracting crate step_polyfill 0.1.0 into /workspace/builds/worker-22/source
[INFO] validating manifest of crates.io crate step_polyfill 0.1.0 on toolchain 222c5724ecc922fe67815f428c19f82c129d9386
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate step_polyfill 0.1.0
[INFO] finished tweaking crates.io crate step_polyfill 0.1.0
[INFO] tweaked toml for crates.io crate step_polyfill 0.1.0 written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "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-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 29b42a992531e9da156bd6e261577b1168dafea150d0073a2df48b2848cd2129
[INFO] running `Command { std: "docker" "start" "-a" "29b42a992531e9da156bd6e261577b1168dafea150d0073a2df48b2848cd2129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29b42a992531e9da156bd6e261577b1168dafea150d0073a2df48b2848cd2129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29b42a992531e9da156bd6e261577b1168dafea150d0073a2df48b2848cd2129", kill_on_drop: false }`
[INFO] [stdout] 29b42a992531e9da156bd6e261577b1168dafea150d0073a2df48b2848cd2129
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e813d4123ce710ef61353fe0b22b464b705ab07c1e5ff14e3fd8028c61a388ea
[INFO] running `Command { std: "docker" "start" "-a" "e813d4123ce710ef61353fe0b22b464b705ab07c1e5ff14e3fd8028c61a388ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling step_polyfill v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "e813d4123ce710ef61353fe0b22b464b705ab07c1e5ff14e3fd8028c61a388ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e813d4123ce710ef61353fe0b22b464b705ab07c1e5ff14e3fd8028c61a388ea", kill_on_drop: false }`
[INFO] [stdout] e813d4123ce710ef61353fe0b22b464b705ab07c1e5ff14e3fd8028c61a388ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3d6f5c1060c464ba8eb60615eed8a519ac506e4ee1431ea6fe7b62aa9d5ed90
[INFO] running `Command { std: "docker" "start" "-a" "c3d6f5c1060c464ba8eb60615eed8a519ac506e4ee1431ea6fe7b62aa9d5ed90", kill_on_drop: false }`
[INFO] [stderr]    Compiling step_polyfill v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.11s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/step_polyfill-4f9a677fae791bcc)
[INFO] running `Command { std: "docker" "inspect" "c3d6f5c1060c464ba8eb60615eed8a519ac506e4ee1431ea6fe7b62aa9d5ed90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3d6f5c1060c464ba8eb60615eed8a519ac506e4ee1431ea6fe7b62aa9d5ed90", kill_on_drop: false }`
[INFO] [stdout] c3d6f5c1060c464ba8eb60615eed8a519ac506e4ee1431ea6fe7b62aa9d5ed90