[INFO] cloning repository https://github.com/sdrummeyjr/rambler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sdrummeyjr/rambler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdrummeyjr%2Frambler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdrummeyjr%2Frambler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3503b6c53658105da8832125995aacfd05e41722
[INFO] testing sdrummeyjr/rambler against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsdrummeyjr%2Frambler" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sdrummeyjr/rambler on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sdrummeyjr/rambler
[INFO] finished tweaking git repo https://github.com/sdrummeyjr/rambler
[INFO] tweaked toml for git repo https://github.com/sdrummeyjr/rambler written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/sdrummeyjr/rambler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed79d6ac8a95f0a49060a222bafc1c8f97936ba257f1c8cbd6457add562817bf
[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" "ed79d6ac8a95f0a49060a222bafc1c8f97936ba257f1c8cbd6457add562817bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed79d6ac8a95f0a49060a222bafc1c8f97936ba257f1c8cbd6457add562817bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed79d6ac8a95f0a49060a222bafc1c8f97936ba257f1c8cbd6457add562817bf", kill_on_drop: false }`
[INFO] [stdout] ed79d6ac8a95f0a49060a222bafc1c8f97936ba257f1c8cbd6457add562817bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26ddabd095aa52cac1c1fb8e2e9aa23cf6fd34ef8da3bfe96a6a55a44c861eab
[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" "26ddabd095aa52cac1c1fb8e2e9aa23cf6fd34ef8da3bfe96a6a55a44c861eab", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rambler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lexer/mod.rs:46:29
[INFO] [stdout]    |
[INFO] [stdout] 46 |                     token = self.read_identifier();
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             expected enum `Token`, found struct `String`
[INFO] [stdout]    |                             help: try using a variant of the expected enum: `Token::IDENT(self.read_identifier())`
[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 E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rambler`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "26ddabd095aa52cac1c1fb8e2e9aa23cf6fd34ef8da3bfe96a6a55a44c861eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26ddabd095aa52cac1c1fb8e2e9aa23cf6fd34ef8da3bfe96a6a55a44c861eab", kill_on_drop: false }`
[INFO] [stdout] 26ddabd095aa52cac1c1fb8e2e9aa23cf6fd34ef8da3bfe96a6a55a44c861eab