[INFO] cloning repository trafficland/counter [INFO] running `"git" "clone" "--bare" "git://github.com/trafficland/counter.git" "work/cache/sources/gh/trafficland/counter"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/trafficland/counter'... [INFO] running `"git" "clone" "work/cache/sources/gh/trafficland/counter" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/trafficland/counter"` [INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/trafficland/counter'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/trafficland/counter" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/trafficland/counter"` [INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/trafficland/counter'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 3f30d2583eba4922a72b3ec885c831a2cf558067 [INFO] sha for GitHub repo trafficland/counter: 3f30d2583eba4922a72b3ec885c831a2cf558067 [INFO] validating manifest of trafficland/counter on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of trafficland/counter on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing trafficland/counter [INFO] finished frobbing trafficland/counter [INFO] frobbed toml for trafficland/counter written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/trafficland/counter/Cargo.toml [INFO] started frobbing trafficland/counter [INFO] finished frobbing trafficland/counter [INFO] frobbed toml for trafficland/counter written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/trafficland/counter/Cargo.toml [INFO] crate trafficland/counter already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded variance v0.1.3 [INFO] [stderr] Downloaded scoped-pool v1.0.0 [INFO] [stderr] Downloaded elp v2.0.0 [INFO] [stderr] Downloaded scopeguard v0.1.2 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] building trafficland/counter against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/trafficland/counter:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"` [INFO] [stdout] 26eb277b64c8c7768c72713abb785c4c5108b2d645f252d3bbd99c928f5a6aed [INFO] running `"docker" "start" "-a" "26eb277b64c8c7768c72713abb785c4c5108b2d645f252d3bbd99c928f5a6aed"` [INFO] [stderr] Compiling variance v0.1.3 [INFO] [stderr] Compiling scopeguard v0.1.2 [INFO] [stderr] Compiling vec_map v0.7.0 [INFO] [stderr] Compiling num-integer v0.1.34 [INFO] [stderr] Compiling memchr v0.1.11 [INFO] [stderr] Compiling thread-id v3.0.0 [INFO] [stderr] Compiling memchr v1.0.1 [INFO] [stderr] Compiling term_size v0.3.0 [INFO] [stderr] Compiling atty v0.2.2 [INFO] [stderr] Compiling num_cpus v1.4.0 [INFO] [stderr] Compiling thread_local v0.3.3 [INFO] [stderr] Compiling scoped-pool v1.0.0 [INFO] [stderr] Compiling thread-id v2.0.0 [INFO] [stderr] Compiling aho-corasick v0.5.3 [INFO] [stderr] Compiling clap v2.23.3 [INFO] [stderr] Compiling num-iter v0.1.33 [INFO] [stderr] Compiling aho-corasick v0.6.3 [INFO] [stderr] Compiling thread_local v0.2.7 [INFO] [stderr] Compiling num v0.1.37 [INFO] [stderr] Compiling chrono v0.2.25 [INFO] [stderr] Compiling regex v0.1.80 [INFO] [stderr] Compiling regex v0.2.1 [INFO] [stderr] Compiling counter v1.0.0 (/opt/crater/workdir) [INFO] [stderr] Compiling elp v2.0.0 [INFO] [stderr] Compiling env_logger v0.3.5 [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/aggregation_control.rs:24:39 [INFO] [stderr] | [INFO] [stderr] 24 | pub fn run_aggregation(&mut self, mut filenames: &mut Vec) -> FileAggregation { [INFO] [stderr] | ----^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:96:52 [INFO] [stderr] | [INFO] [stderr] 96 | fn run(&mut self, num_file_aggregators: usize, mut filenames: &mut Vec) -> counter::FileAggregation { [INFO] [stderr] | ----^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 56.94s [INFO] running `"docker" "inspect" "26eb277b64c8c7768c72713abb785c4c5108b2d645f252d3bbd99c928f5a6aed"` [INFO] running `"docker" "rm" "-f" "26eb277b64c8c7768c72713abb785c4c5108b2d645f252d3bbd99c928f5a6aed"` [INFO] [stdout] 26eb277b64c8c7768c72713abb785c4c5108b2d645f252d3bbd99c928f5a6aed [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/trafficland/counter:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"` [INFO] [stdout] d9ed163471b30546dd84d5ffb56dd1b08d6f830973e6a545e574c8882183aa51 [INFO] running `"docker" "start" "-a" "d9ed163471b30546dd84d5ffb56dd1b08d6f830973e6a545e574c8882183aa51"` [INFO] [stderr] Compiling names v0.11.0 [INFO] [stderr] Compiling rand v0.3.15 [INFO] [stderr] Compiling counter v1.0.0 (/opt/crater/workdir) [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:96:52 [INFO] [stderr] | [INFO] [stderr] 96 | fn run(&mut self, num_file_aggregators: usize, mut filenames: &mut Vec) -> counter::FileAggregation { [INFO] [stderr] | ----^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/file_handling.rs:355:23 [INFO] [stderr] | [INFO] [stderr] 355 | .map(|mut g| g.next().unwrap()) [INFO] [stderr] | ----^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/aggregation_control.rs:24:39 [INFO] [stderr] | [INFO] [stderr] 24 | pub fn run_aggregation(&mut self, mut filenames: &mut Vec) -> FileAggregation { [INFO] [stderr] | ----^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 7.07s [INFO] running `"docker" "inspect" "d9ed163471b30546dd84d5ffb56dd1b08d6f830973e6a545e574c8882183aa51"` [INFO] running `"docker" "rm" "-f" "d9ed163471b30546dd84d5ffb56dd1b08d6f830973e6a545e574c8882183aa51"` [INFO] [stdout] d9ed163471b30546dd84d5ffb56dd1b08d6f830973e6a545e574c8882183aa51