[INFO] cloning repository https://github.com/totechite/mossy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/totechite/mossy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftotechite%2Fmossy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftotechite%2Fmossy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11894e7b85714c74d548d73a4700e166b33e389d
[INFO] checking totechite/mossy against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftotechite%2Fmossy" "/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/totechite/mossy on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/totechite/mossy
[INFO] finished tweaking git repo https://github.com/totechite/mossy
[INFO] tweaked toml for git repo https://github.com/totechite/mossy written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/totechite/mossy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--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-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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d372ee6f723bd5bc86d113b9910a2efac7212c83d079c971d352d42b4b385c84
[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" "d372ee6f723bd5bc86d113b9910a2efac7212c83d079c971d352d42b4b385c84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d372ee6f723bd5bc86d113b9910a2efac7212c83d079c971d352d42b4b385c84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d372ee6f723bd5bc86d113b9910a2efac7212c83d079c971d352d42b4b385c84", kill_on_drop: false }`
[INFO] [stdout] d372ee6f723bd5bc86d113b9910a2efac7212c83d079c971d352d42b4b385c84
[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=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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd89b529ee06074fd89dae4eaffd9dae9ac6766f3ef2ef1c765ad24a7ce8a413
[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" "dd89b529ee06074fd89dae4eaffd9dae9ac6766f3ef2ef1c765ad24a7ce8a413", kill_on_drop: false }`
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]     Checking mossy v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 let mut find_lang: Option<_> = Regex::new(r"[\w[0-9]]+")
[INFO] [stdout]    |                     ----^^^^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lexer.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 let mut find_lang: Option<_> = Regex::new(r"[\w[0-9]]+")
[INFO] [stdout]    |                     ----^^^^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.70s
[INFO] running `Command { std: "docker" "inspect" "dd89b529ee06074fd89dae4eaffd9dae9ac6766f3ef2ef1c765ad24a7ce8a413", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd89b529ee06074fd89dae4eaffd9dae9ac6766f3ef2ef1c765ad24a7ce8a413", kill_on_drop: false }`
[INFO] [stdout] dd89b529ee06074fd89dae4eaffd9dae9ac6766f3ef2ef1c765ad24a7ce8a413