[INFO] cloning repository https://github.com/mrsekut/understanding_computation_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrsekut/understanding_computation_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrsekut%2Funderstanding_computation_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrsekut%2Funderstanding_computation_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f555118e551400d41440984c40ec8ad86e209e34
[INFO] testing mrsekut/understanding_computation_rs against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrsekut%2Funderstanding_computation_rs" "/workspace/builds/worker-113/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-113/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mrsekut/understanding_computation_rs on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mrsekut/understanding_computation_rs
[INFO] finished tweaking git repo https://github.com/mrsekut/understanding_computation_rs
[INFO] tweaked toml for git repo https://github.com/mrsekut/understanding_computation_rs written to /workspace/builds/worker-113/source/Cargo.toml
[INFO] crate git repo https://github.com/mrsekut/understanding_computation_rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 084a9454754b0b225921185ed76ac13ef271b302b3534d1911c4b820904826b3
[INFO] running `Command { std: "docker" "start" "-a" "084a9454754b0b225921185ed76ac13ef271b302b3534d1911c4b820904826b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "084a9454754b0b225921185ed76ac13ef271b302b3534d1911c4b820904826b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "084a9454754b0b225921185ed76ac13ef271b302b3534d1911c4b820904826b3", kill_on_drop: false }`
[INFO] [stdout] 084a9454754b0b225921185ed76ac13ef271b302b3534d1911c4b820904826b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-113/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61dd17bc21f059673c2086aee60fe71397d99973ba4fa5d360e6e15ca4657f0a
[INFO] running `Command { std: "docker" "start" "-a" "61dd17bc21f059673c2086aee60fe71397d99973ba4fa5d360e6e15ca4657f0a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling understanding_computation_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `(`, `[`, or `{`, found `}`
[INFO] [stdout]   --> src/main.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 unimplemented!
[INFO] [stdout]    |                               - expected one of `(`, `[`, or `{`
[INFO] [stdout] ...
[INFO] [stdout] 51 |             }
[INFO] [stdout]    |             ^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected one of `(`, `[`, or `{`, found `,`
[INFO] [stdout]   --> src/main.rs:52:51
[INFO] [stdout]    |
[INFO] [stdout] 52 |             Expr::Multiply(l, r) => unimplemented!,
[INFO] [stdout]    |                                  --               ^ expected one of `(`, `[`, or `{`
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  while parsing the `match` arm starting here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `understanding_computation_rs` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "61dd17bc21f059673c2086aee60fe71397d99973ba4fa5d360e6e15ca4657f0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61dd17bc21f059673c2086aee60fe71397d99973ba4fa5d360e6e15ca4657f0a", kill_on_drop: false }`
[INFO] [stdout] 61dd17bc21f059673c2086aee60fe71397d99973ba4fa5d360e6e15ca4657f0a