[INFO] fetching crate slip21 0.2.0...
[INFO] testing slip21-0.2.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate slip21 0.2.0 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate slip21 0.2.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slip21 0.2.0
[INFO] finished tweaking crates.io crate slip21 0.2.0
[INFO] tweaked toml for crates.io crate slip21 0.2.0 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitcoin_hashes v0.7.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d4b0c30850ac796f69c6b41611d993630e8d4d246a275fc20c8b5a4ce65c73d
[INFO] running `Command { std: "docker" "start" "-a" "9d4b0c30850ac796f69c6b41611d993630e8d4d246a275fc20c8b5a4ce65c73d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d4b0c30850ac796f69c6b41611d993630e8d4d246a275fc20c8b5a4ce65c73d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d4b0c30850ac796f69c6b41611d993630e8d4d246a275fc20c8b5a4ce65c73d", kill_on_drop: false }`
[INFO] [stdout] 9d4b0c30850ac796f69c6b41611d993630e8d4d246a275fc20c8b5a4ce65c73d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64f9664d9e456a136e7cddbc83f48448c34868d6e5c527b8c3af80834feab389
[INFO] running `Command { std: "docker" "start" "-a" "64f9664d9e456a136e7cddbc83f48448c34868d6e5c527b8c3af80834feab389", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bitcoin_hashes v0.7.6
[INFO] [stderr]    Compiling slip21 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.18s
[INFO] running `Command { std: "docker" "inspect" "64f9664d9e456a136e7cddbc83f48448c34868d6e5c527b8c3af80834feab389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64f9664d9e456a136e7cddbc83f48448c34868d6e5c527b8c3af80834feab389", kill_on_drop: false }`
[INFO] [stdout] 64f9664d9e456a136e7cddbc83f48448c34868d6e5c527b8c3af80834feab389
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d5197ec88e7b5950fd357fa318a8c00b88304c7490eaa468dde2ade3dac2247
[INFO] running `Command { std: "docker" "start" "-a" "8d5197ec88e7b5950fd357fa318a8c00b88304c7490eaa468dde2ade3dac2247", kill_on_drop: false }`
[INFO] [stderr]    Compiling slip21 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `hex`
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate hex;
[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 `slip21` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "8d5197ec88e7b5950fd357fa318a8c00b88304c7490eaa468dde2ade3dac2247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d5197ec88e7b5950fd357fa318a8c00b88304c7490eaa468dde2ade3dac2247", kill_on_drop: false }`
[INFO] [stdout] 8d5197ec88e7b5950fd357fa318a8c00b88304c7490eaa468dde2ade3dac2247