[INFO] fetching crate cow 0.0.8...
[INFO] checking cow-0.0.8 against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] extracting crate cow 0.0.8 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate cow 0.0.8 on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cow 0.0.8
[INFO] finished tweaking crates.io crate cow 0.0.8
[INFO] tweaked toml for crates.io crate cow 0.0.8 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: path `/workspace/builds/worker-5/source/src/cow.rs` was erroneously implicitly accepted for library `cow`,
[INFO] [stderr] please rename the file to `src/lib.rs` or set lib.path in Cargo.toml
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f6c77fa968dcb770dba551a1ab2b9189133704779a2c0a62b05d4ff1675b4b3
[INFO] running `Command { std: "docker" "start" "-a" "3f6c77fa968dcb770dba551a1ab2b9189133704779a2c0a62b05d4ff1675b4b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f6c77fa968dcb770dba551a1ab2b9189133704779a2c0a62b05d4ff1675b4b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f6c77fa968dcb770dba551a1ab2b9189133704779a2c0a62b05d4ff1675b4b3", kill_on_drop: false }`
[INFO] [stdout] 3f6c77fa968dcb770dba551a1ab2b9189133704779a2c0a62b05d4ff1675b4b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61a6c52e61d71a0c3bc1f3c3f4d8381bf8e0158aaf5b4d79bfa09d2ac03aec5e
[INFO] running `Command { std: "docker" "start" "-a" "61a6c52e61d71a0c3bc1f3c3f4d8381bf8e0158aaf5b4d79bfa09d2ac03aec5e", kill_on_drop: false }`
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/cow.rs` was erroneously implicitly accepted for library `cow`,
[INFO] [stderr] please rename the file to `src/lib.rs` or set lib.path in Cargo.toml
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]     Checking cow v0.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `collections`
[INFO] [stdout]  --> src/cow.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate collections;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cow`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "61a6c52e61d71a0c3bc1f3c3f4d8381bf8e0158aaf5b4d79bfa09d2ac03aec5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61a6c52e61d71a0c3bc1f3c3f4d8381bf8e0158aaf5b4d79bfa09d2ac03aec5e", kill_on_drop: false }`
[INFO] [stdout] 61a6c52e61d71a0c3bc1f3c3f4d8381bf8e0158aaf5b4d79bfa09d2ac03aec5e