[INFO] updating cached repository travis-ci/redactor
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/travis-ci/redactor
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/travis-ci/redactor" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/travis-ci/redactor"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/travis-ci/redactor'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/travis-ci/redactor" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/travis-ci/redactor"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/travis-ci/redactor'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 197eee68062f53654c9fe61694615a1b90920a0e
[INFO] sha for GitHub repo travis-ci/redactor: 197eee68062f53654c9fe61694615a1b90920a0e
[INFO] validating manifest of travis-ci/redactor 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 travis-ci/redactor 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 travis-ci/redactor
[INFO] finished frobbing travis-ci/redactor
[INFO] frobbed toml for travis-ci/redactor written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/travis-ci/redactor/Cargo.toml
[INFO] started frobbing travis-ci/redactor
[INFO] finished frobbing travis-ci/redactor
[INFO] frobbed toml for travis-ci/redactor written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/travis-ci/redactor/Cargo.toml
[INFO] crate travis-ci/redactor 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 travis-ci/redactor against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-5/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/travis-ci/redactor:/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] 5dc56072bcb97d673d6db28da89cf251876b292b46d18a32325213c5f9b38de8
[INFO] running `"docker" "start" "-a" "5dc56072bcb97d673d6db28da89cf251876b292b46d18a32325213c5f9b38de8"`
[INFO] [stderr]     Checking errno v0.1.8
[INFO] [stderr]     Checking base64 v0.5.2
[INFO] [stderr]     Checking tempdir v0.3.5
[INFO] [stderr]     Checking pty v0.2.1
[INFO] [stderr]     Checking exec v0.2.0
[INFO] [stderr]     Checking redactor v0.1.0-pre6 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/redactor.rs:142:23
[INFO] [stderr]     |
[INFO] [stderr] 142 | pub fn noop<'a, R, W>(mut input: &'a mut R, mut output: &'a mut W) where R: 'a + Read, W: 'a + Write {
[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/redactor.rs:142:45
[INFO] [stderr]     |
[INFO] [stderr] 142 | pub fn noop<'a, R, W>(mut input: &'a mut R, mut output: &'a mut W) where R: 'a + Read, W: 'a + Write {
[INFO] [stderr]     |                                             ----^^^^^^
[INFO] [stderr]     |                                             |
[INFO] [stderr]     |                                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/redactor.rs:142:23
[INFO] [stderr]     |
[INFO] [stderr] 142 | pub fn noop<'a, R, W>(mut input: &'a mut R, mut output: &'a mut W) where R: 'a + Read, W: 'a + Write {
[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/redactor.rs:142:45
[INFO] [stderr]     |
[INFO] [stderr] 142 | pub fn noop<'a, R, W>(mut input: &'a mut R, mut output: &'a mut W) where R: 'a + Read, W: 'a + Write {
[INFO] [stderr]     |                                             ----^^^^^^
[INFO] [stderr]     |                                             |
[INFO] [stderr]     |                                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.86s
[INFO] running `"docker" "inspect" "5dc56072bcb97d673d6db28da89cf251876b292b46d18a32325213c5f9b38de8"`
[INFO] running `"docker" "rm" "-f" "5dc56072bcb97d673d6db28da89cf251876b292b46d18a32325213c5f9b38de8"`
[INFO] [stdout] 5dc56072bcb97d673d6db28da89cf251876b292b46d18a32325213c5f9b38de8