[INFO] updating cached repository JimCooke/t-digest
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/JimCooke/t-digest
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/JimCooke/t-digest" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/JimCooke/t-digest"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/JimCooke/t-digest'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/JimCooke/t-digest" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/JimCooke/t-digest"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/JimCooke/t-digest'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 40a4f3d0862affa2407f3da18db76ff58e46b51b
[INFO] sha for GitHub repo JimCooke/t-digest: 40a4f3d0862affa2407f3da18db76ff58e46b51b
[INFO] validating manifest of JimCooke/t-digest on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of JimCooke/t-digest on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing JimCooke/t-digest
[INFO] finished frobbing JimCooke/t-digest
[INFO] frobbed toml for JimCooke/t-digest written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/JimCooke/t-digest/Cargo.toml
[INFO] started frobbing JimCooke/t-digest
[INFO] finished frobbing JimCooke/t-digest
[INFO] frobbed toml for JimCooke/t-digest written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/JimCooke/t-digest/Cargo.toml
[INFO] crate JimCooke/t-digest already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking JimCooke/t-digest against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-4/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/JimCooke/t-digest:/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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7dd8c97c6e05ae408461c1694c27e34169af4faeb1364ad68dd746c4b348a5fd
[INFO] running `"docker" "start" "-a" "7dd8c97c6e05ae408461c1694c27e34169af4faeb1364ad68dd746c4b348a5fd"`
[INFO] [stderr]    Compiling serde v1.0.85
[INFO] [stderr]     Checking quickersort v3.0.1
[INFO] [stderr]     Checking serde_json v1.0.37
[INFO] [stderr]     Checking tdigest v1.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> tests/integration_test.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let mut str = match line {
[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]   --> tests/integration_test.rs:77:13
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let mut split = str.split_whitespace();
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.41s
[INFO] running `"docker" "inspect" "7dd8c97c6e05ae408461c1694c27e34169af4faeb1364ad68dd746c4b348a5fd"`
[INFO] running `"docker" "rm" "-f" "7dd8c97c6e05ae408461c1694c27e34169af4faeb1364ad68dd746c4b348a5fd"`
[INFO] [stdout] 7dd8c97c6e05ae408461c1694c27e34169af4faeb1364ad68dd746c4b348a5fd