[INFO] cloning repository https://github.com/hbansal0122/spell-check
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hbansal0122/spell-check" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhbansal0122%2Fspell-check", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhbansal0122%2Fspell-check'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e2e94841bc40baee976ef9241213857f01d6b31e
[INFO] checking hbansal0122/spell-check against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhbansal0122%2Fspell-check" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hbansal0122/spell-check on toolchain c9228570668803e3e6402770d55f23a12c9ae686
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hbansal0122/spell-check
[INFO] finished tweaking git repo https://github.com/hbansal0122/spell-check
[INFO] tweaked toml for git repo https://github.com/hbansal0122/spell-check written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/hbansal0122/spell-check already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86fff7a62473637582ec88e156e905ad8c417313e0047dbc965c5e2eecf81698
[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" "86fff7a62473637582ec88e156e905ad8c417313e0047dbc965c5e2eecf81698", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86fff7a62473637582ec88e156e905ad8c417313e0047dbc965c5e2eecf81698", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86fff7a62473637582ec88e156e905ad8c417313e0047dbc965c5e2eecf81698", kill_on_drop: false }`
[INFO] [stdout] 86fff7a62473637582ec88e156e905ad8c417313e0047dbc965c5e2eecf81698
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 386c70b7fbc5d8b87ee69a2754d9748090fb2fe3deb4eb470235c0eac2810931
[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" "386c70b7fbc5d8b87ee69a2754d9748090fb2fe3deb4eb470235c0eac2810931", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.12
[INFO] [stderr]    Compiling matrixmultiply v0.1.14
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]    Compiling ndarray v0.11.2
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking stdinout v0.4.0
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking approx v0.2.1
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking ordered-float v0.5.0
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking regex v1.0.2
[INFO] [stderr]    Compiling quote v0.6.6
[INFO] [stderr]    Compiling syn v0.14.8
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]     Checking failure v0.1.2
[INFO] [stderr]     Checking speller v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:216:13
[INFO] [stdout]     |
[INFO] [stdout] 216 |         let mut local_word = item.term.to_string();
[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/main.rs:223:17
[INFO] [stdout]     |
[INFO] [stdout] 223 |             let mut counter:usize = 1;
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:216:13
[INFO] [stdout]     |
[INFO] [stdout] 216 |         let mut local_word = item.term.to_string();
[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/main.rs:223:17
[INFO] [stdout]     |
[INFO] [stdout] 223 |             let mut counter:usize = 1;
[INFO] [stdout]     |                 ----^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.91s
[INFO] running `Command { std: "docker" "inspect" "386c70b7fbc5d8b87ee69a2754d9748090fb2fe3deb4eb470235c0eac2810931", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "386c70b7fbc5d8b87ee69a2754d9748090fb2fe3deb4eb470235c0eac2810931", kill_on_drop: false }`
[INFO] [stdout] 386c70b7fbc5d8b87ee69a2754d9748090fb2fe3deb4eb470235c0eac2810931