[INFO] cloning repository https://github.com/Ek0n/CrustoPals
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ek0n/CrustoPals" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEk0n%2FCrustoPals", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEk0n%2FCrustoPals'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1dccf928f1daa0727e05e0f5eb4306fda2eac565
[INFO] testing Ek0n/CrustoPals against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEk0n%2FCrustoPals" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ek0n/CrustoPals 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 git repo https://github.com/Ek0n/CrustoPals
[INFO] finished tweaking git repo https://github.com/Ek0n/CrustoPals
[INFO] tweaked toml for git repo https://github.com/Ek0n/CrustoPals written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Ek0n/CrustoPals 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] [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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24614953c9ebd6de0c772848360a938880e80d098e9437b19728aed9afc4aebc
[INFO] running `Command { std: "docker" "start" "-a" "24614953c9ebd6de0c772848360a938880e80d098e9437b19728aed9afc4aebc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24614953c9ebd6de0c772848360a938880e80d098e9437b19728aed9afc4aebc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24614953c9ebd6de0c772848360a938880e80d098e9437b19728aed9afc4aebc", kill_on_drop: false }`
[INFO] [stdout] 24614953c9ebd6de0c772848360a938880e80d098e9437b19728aed9afc4aebc
[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" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6684195b5ed62658c657f7466a685a0e9ec11cb0c115f5219d59ee34b1adf1f
[INFO] running `Command { std: "docker" "start" "-a" "e6684195b5ed62658c657f7466a685a0e9ec11cb0c115f5219d59ee34b1adf1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling hex v0.3.1
[INFO] [stderr]    Compiling base64 v0.8.0
[INFO] [stderr]    Compiling crustopals v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(entry_and_modify)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/lib.rs:25:55
[INFO] [stdout]    |
[INFO] [stdout] 25 |             println!("couldn't open {}: {}", display, Error::description(&why));
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `crustopals`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "e6684195b5ed62658c657f7466a685a0e9ec11cb0c115f5219d59ee34b1adf1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6684195b5ed62658c657f7466a685a0e9ec11cb0c115f5219d59ee34b1adf1f", kill_on_drop: false }`
[INFO] [stdout] e6684195b5ed62658c657f7466a685a0e9ec11cb0c115f5219d59ee34b1adf1f