[INFO] fetching crate trait_exerci 0.3.0...
[INFO] checking trait_exerci-0.3.0 against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] extracting crate trait_exerci 0.3.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate trait_exerci 0.3.0 on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate trait_exerci 0.3.0
[INFO] finished tweaking crates.io crate trait_exerci 0.3.0
[INFO] tweaked toml for crates.io crate trait_exerci 0.3.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate trait_exerci 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aefb2fd24ff1ed1f29f7548b2bc7a1c07e6e356dd4369bcf81ea9f8079495b55
[INFO] running `Command { std: "docker" "start" "-a" "aefb2fd24ff1ed1f29f7548b2bc7a1c07e6e356dd4369bcf81ea9f8079495b55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aefb2fd24ff1ed1f29f7548b2bc7a1c07e6e356dd4369bcf81ea9f8079495b55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aefb2fd24ff1ed1f29f7548b2bc7a1c07e6e356dd4369bcf81ea9f8079495b55", kill_on_drop: false }`
[INFO] [stdout] aefb2fd24ff1ed1f29f7548b2bc7a1c07e6e356dd4369bcf81ea9f8079495b55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 659cfc6930bf624e20c48bf47d8c107bec22db2d826da62b67dc831732245f5f
[INFO] running `Command { std: "docker" "start" "-a" "659cfc6930bf624e20c48bf47d8c107bec22db2d826da62b67dc831732245f5f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking trait_exerci v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "659cfc6930bf624e20c48bf47d8c107bec22db2d826da62b67dc831732245f5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "659cfc6930bf624e20c48bf47d8c107bec22db2d826da62b67dc831732245f5f", kill_on_drop: false }`
[INFO] [stdout] 659cfc6930bf624e20c48bf47d8c107bec22db2d826da62b67dc831732245f5f