[INFO] updating cached 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" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f555118e551400d41440984c40ec8ad86e209e34
[INFO] testing mrsekut/understanding_computation_rs against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrsekut%2Funderstanding_computation_rs" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mrsekut/understanding_computation_rs on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", 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-11/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-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 85bfffd6531a95bb2e5c7422e0331144eda12f0ffca4085dc061fdb3f30bf10e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "85bfffd6531a95bb2e5c7422e0331144eda12f0ffca4085dc061fdb3f30bf10e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85bfffd6531a95bb2e5c7422e0331144eda12f0ffca4085dc061fdb3f30bf10e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85bfffd6531a95bb2e5c7422e0331144eda12f0ffca4085dc061fdb3f30bf10e", kill_on_drop: false }`
[INFO] [stdout] 85bfffd6531a95bb2e5c7422e0331144eda12f0ffca4085dc061fdb3f30bf10e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50256966e1277105bb190ec2cc4c2daaa3d12ae82bd609a10ed5b4dc033de7b4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "50256966e1277105bb190ec2cc4c2daaa3d12ae82bd609a10ed5b4dc033de7b4", kill_on_drop: false }`
[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`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "50256966e1277105bb190ec2cc4c2daaa3d12ae82bd609a10ed5b4dc033de7b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50256966e1277105bb190ec2cc4c2daaa3d12ae82bd609a10ed5b4dc033de7b4", kill_on_drop: false }`
[INFO] [stdout] 50256966e1277105bb190ec2cc4c2daaa3d12ae82bd609a10ed5b4dc033de7b4