[INFO] fetching crate stemflow 0.5.3...
[INFO] testing stemflow-0.5.3 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate stemflow 0.5.3 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate stemflow 0.5.3 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stemflow 0.5.3
[INFO] finished tweaking crates.io crate stemflow 0.5.3
[INFO] tweaked toml for crates.io crate stemflow 0.5.3 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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" "+beta-2021-08-01" "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] 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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71a0b782a7b484a5b87f121966cabe61a02a39256c8a4046d0033d687347c0ad
[INFO] running `Command { std: "docker" "start" "-a" "71a0b782a7b484a5b87f121966cabe61a02a39256c8a4046d0033d687347c0ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71a0b782a7b484a5b87f121966cabe61a02a39256c8a4046d0033d687347c0ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71a0b782a7b484a5b87f121966cabe61a02a39256c8a4046d0033d687347c0ad", kill_on_drop: false }`
[INFO] [stdout] 71a0b782a7b484a5b87f121966cabe61a02a39256c8a4046d0033d687347c0ad
[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=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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16023d7c1f9afa9d254b65e0b38f7eb72b7e10d9046dc2fa0fba789eded037f1
[INFO] running `Command { std: "docker" "start" "-a" "16023d7c1f9afa9d254b65e0b38f7eb72b7e10d9046dc2fa0fba789eded037f1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling dot v0.1.4
[INFO] [stderr]    Compiling stemflow v0.5.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `collections`
[INFO] [stdout]   --> src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | 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 `stemflow` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "16023d7c1f9afa9d254b65e0b38f7eb72b7e10d9046dc2fa0fba789eded037f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16023d7c1f9afa9d254b65e0b38f7eb72b7e10d9046dc2fa0fba789eded037f1", kill_on_drop: false }`
[INFO] [stdout] 16023d7c1f9afa9d254b65e0b38f7eb72b7e10d9046dc2fa0fba789eded037f1
