[INFO] fetching crate klu_core 0.2.1...
[INFO] testing klu_core-0.2.1 against 1.54.0 for beta-1.55-1
[INFO] extracting crate klu_core 0.2.1 into /workspace/builds/worker-112/source
[INFO] validating manifest of crates.io crate klu_core 0.2.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate klu_core 0.2.1
[INFO] finished tweaking crates.io crate klu_core 0.2.1
[INFO] tweaked toml for crates.io crate klu_core 0.2.1 written to /workspace/builds/worker-112/source/Cargo.toml
[INFO] crate crates.io crate klu_core 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36e80d8ed1ca24e80ae1d60bcbf28ff33e60aadee09c72c308af47bd335f8e0b
[INFO] running `Command { std: "docker" "start" "-a" "36e80d8ed1ca24e80ae1d60bcbf28ff33e60aadee09c72c308af47bd335f8e0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36e80d8ed1ca24e80ae1d60bcbf28ff33e60aadee09c72c308af47bd335f8e0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36e80d8ed1ca24e80ae1d60bcbf28ff33e60aadee09c72c308af47bd335f8e0b", kill_on_drop: false }`
[INFO] [stdout] 36e80d8ed1ca24e80ae1d60bcbf28ff33e60aadee09c72c308af47bd335f8e0b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/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" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b91c4374107159c8f3aa3107d3e1cae2907c66a177fee8db992507f696765b6d
[INFO] running `Command { std: "docker" "start" "-a" "b91c4374107159c8f3aa3107d3e1cae2907c66a177fee8db992507f696765b6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling klu_core v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "b91c4374107159c8f3aa3107d3e1cae2907c66a177fee8db992507f696765b6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b91c4374107159c8f3aa3107d3e1cae2907c66a177fee8db992507f696765b6d", kill_on_drop: false }`
[INFO] [stdout] b91c4374107159c8f3aa3107d3e1cae2907c66a177fee8db992507f696765b6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-112/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" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18ed99e0d81029b756262d2f0c8f41b5256ef4e49a04aa369c4772031fe5f23c
[INFO] running `Command { std: "docker" "start" "-a" "18ed99e0d81029b756262d2f0c8f41b5256ef4e49a04aa369c4772031fe5f23c", kill_on_drop: false }`
[INFO] [stderr]    Compiling klu_core v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `klu`
[INFO] [stdout]  --> examples/r_exists.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate klu;
[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 `klu_core`
[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] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]  --> examples/read_file.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "18ed99e0d81029b756262d2f0c8f41b5256ef4e49a04aa369c4772031fe5f23c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18ed99e0d81029b756262d2f0c8f41b5256ef4e49a04aa369c4772031fe5f23c", kill_on_drop: false }`
[INFO] [stdout] 18ed99e0d81029b756262d2f0c8f41b5256ef4e49a04aa369c4772031fe5f23c
