[INFO] cloning repository https://github.com/oxalica/cargo-gc-target
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oxalica/cargo-gc-target" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foxalica%2Fcargo-gc-target", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foxalica%2Fcargo-gc-target'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2f6e7498f6d1e28963ba8e387ceacc36ad54c504
[INFO] building oxalica/cargo-gc-target against master#461e8078010433ff7de2db2aaae8a3cfb0847215 for pr-94962
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foxalica%2Fcargo-gc-target" "/workspace/builds/worker-31/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-31/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oxalica/cargo-gc-target on toolchain 461e8078010433ff7de2db2aaae8a3cfb0847215
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/oxalica/cargo-gc-target
[INFO] finished tweaking git repo https://github.com/oxalica/cargo-gc-target
[INFO] tweaked toml for git repo https://github.com/oxalica/cargo-gc-target written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] crate git repo https://github.com/oxalica/cargo-gc-target already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustfix v0.5.1
[INFO] [stderr]   Downloaded crates-io v0.33.0
[INFO] [stderr]   Downloaded sized-chunks v0.6.4
[INFO] [stderr]   Downloaded opener v0.4.1
[INFO] [stderr]   Downloaded cargo v0.52.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e43e811452c9eda89731e34294ea26736b7a516e4ec3c4ce09c495dd18c537a2
[INFO] running `Command { std: "docker" "start" "-a" "e43e811452c9eda89731e34294ea26736b7a516e4ec3c4ce09c495dd18c537a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e43e811452c9eda89731e34294ea26736b7a516e4ec3c4ce09c495dd18c537a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e43e811452c9eda89731e34294ea26736b7a516e4ec3c4ce09c495dd18c537a2", kill_on_drop: false }`
[INFO] [stdout] e43e811452c9eda89731e34294ea26736b7a516e4ec3c4ce09c495dd18c537a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5771ba9e99b82ae6d67fc1564ae73896810d351bc29cbf3b0c4cad84990e6c4a
[INFO] running `Command { std: "docker" "start" "-a" "5771ba9e99b82ae6d67fc1564ae73896810d351bc29cbf3b0c4cad84990e6c4a", kill_on_drop: false }`
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[INFO] [stderr]    Compiling rand_core v0.6.2
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[INFO] [stderr]    Compiling rand_chacha v0.3.0
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[INFO] [stderr]    Compiling curl-sys v0.4.41+curl-7.75.0
[INFO] [stderr]    Compiling libgit2-sys v0.12.18+1.1.0
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling url v2.2.1
[INFO] [stderr]    Compiling cargo v0.52.0
[INFO] [stderr]    Compiling sized-chunks v0.6.4
[INFO] [stderr]    Compiling globset v0.4.6
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling ignore v0.4.17
[INFO] [stderr]    Compiling git2 v0.13.17
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling crypto-hash v0.3.4
[INFO] [stderr]    Compiling git2-curl v0.14.1
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling semver v0.10.0
[INFO] [stderr]    Compiling serde_ignored v0.1.2
[INFO] [stderr]    Compiling cargo-platform v0.1.1
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling crates-io v0.33.0
[INFO] [stderr]    Compiling rustfix v0.5.1
[INFO] [stderr]    Compiling cargo-gc-target v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 20s
[INFO] running `Command { std: "docker" "inspect" "5771ba9e99b82ae6d67fc1564ae73896810d351bc29cbf3b0c4cad84990e6c4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5771ba9e99b82ae6d67fc1564ae73896810d351bc29cbf3b0c4cad84990e6c4a", kill_on_drop: false }`
[INFO] [stdout] 5771ba9e99b82ae6d67fc1564ae73896810d351bc29cbf3b0c4cad84990e6c4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9d150710482ecc59648070181282dc4cc321254ec53e8016d46ef1a078b3af9
[INFO] running `Command { std: "docker" "start" "-a" "b9d150710482ecc59648070181282dc4cc321254ec53e8016d46ef1a078b3af9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cargo-gc-target v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/cargo_gc-82ea3d1005aa1b6d)
[INFO] running `Command { std: "docker" "inspect" "b9d150710482ecc59648070181282dc4cc321254ec53e8016d46ef1a078b3af9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9d150710482ecc59648070181282dc4cc321254ec53e8016d46ef1a078b3af9", kill_on_drop: false }`
[INFO] [stdout] b9d150710482ecc59648070181282dc4cc321254ec53e8016d46ef1a078b3af9