[INFO] cloning repository https://github.com/python357-1/four-magic
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/python357-1/four-magic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpython357-1%2Ffour-magic", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpython357-1%2Ffour-magic'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 86d6beae474f14bdb719e3ba1acb0c1a020c39c5
[INFO] testing python357-1/four-magic against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpython357-1%2Ffour-magic" "/workspace/builds/worker-67/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-67/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/python357-1/four-magic on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/python357-1/four-magic
[INFO] finished tweaking git repo https://github.com/python357-1/four-magic
[INFO] tweaked toml for git repo https://github.com/python357-1/four-magic written to /workspace/builds/worker-67/source/Cargo.toml
[INFO] crate git repo https://github.com/python357-1/four-magic already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20ac88bbdda28ab624d22fd714f0fa086544f1239cb690c54fa96e831f10d8f8
[INFO] running `Command { std: "docker" "start" "-a" "20ac88bbdda28ab624d22fd714f0fa086544f1239cb690c54fa96e831f10d8f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20ac88bbdda28ab624d22fd714f0fa086544f1239cb690c54fa96e831f10d8f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20ac88bbdda28ab624d22fd714f0fa086544f1239cb690c54fa96e831f10d8f8", kill_on_drop: false }`
[INFO] [stdout] 20ac88bbdda28ab624d22fd714f0fa086544f1239cb690c54fa96e831f10d8f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38b57904b5e85d806cc8be50d351974eddafabef867247d993217c8e354f1598
[INFO] running `Command { std: "docker" "start" "-a" "38b57904b5e85d806cc8be50d351974eddafabef867247d993217c8e354f1598", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling text_io v0.1.8
[INFO] [stderr]    Compiling four-magic v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: comparison operators cannot be chained
[INFO] [stdout]  --> src/main.rs:9:42
[INFO] [stdout]   |
[INFO] [stdout] 9 |     while encoded_number.chars().count() != 4 >{
[INFO] [stdout]   |                                          ^^   ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `four-magic` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "38b57904b5e85d806cc8be50d351974eddafabef867247d993217c8e354f1598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38b57904b5e85d806cc8be50d351974eddafabef867247d993217c8e354f1598", kill_on_drop: false }`
[INFO] [stdout] 38b57904b5e85d806cc8be50d351974eddafabef867247d993217c8e354f1598