[INFO] updating cached repository Idolf/rust-str-fuzz
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Idolf/rust-str-fuzz
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Idolf/rust-str-fuzz" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/Idolf/rust-str-fuzz"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/Idolf/rust-str-fuzz'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Idolf/rust-str-fuzz" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/Idolf/rust-str-fuzz"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/Idolf/rust-str-fuzz'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 630311fdcdc1320f7d1aa06dcf9175029c4233f1
[INFO] sha for GitHub repo Idolf/rust-str-fuzz: 630311fdcdc1320f7d1aa06dcf9175029c4233f1
[INFO] validating manifest of Idolf/rust-str-fuzz on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Idolf/rust-str-fuzz on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Idolf/rust-str-fuzz
[INFO] finished frobbing Idolf/rust-str-fuzz
[INFO] frobbed toml for Idolf/rust-str-fuzz written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/Idolf/rust-str-fuzz/Cargo.toml
[INFO] started frobbing Idolf/rust-str-fuzz
[INFO] finished frobbing Idolf/rust-str-fuzz
[INFO] frobbed toml for Idolf/rust-str-fuzz written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/Idolf/rust-str-fuzz/Cargo.toml
[INFO] crate Idolf/rust-str-fuzz already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Idolf/rust-str-fuzz against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-0/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/Idolf/rust-str-fuzz:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3b8658ca8074cada3d63b3ff8006ac82877329b2305f1af6fffe93921e0febad
[INFO] running `"docker" "start" "-a" "3b8658ca8074cada3d63b3ff8006ac82877329b2305f1af6fffe93921e0febad"`
[INFO] [stderr]     Checking tokio-executor v0.1.2 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]     Checking bytes v0.4.7
[INFO] [stderr]     Checking tokio-threadpool v0.1.3 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]     Checking tokio-timer v0.2.3 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]     Checking tokio-io v0.1.6 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]     Checking tokio-reactor v0.1.1 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]     Checking tokio-fs v0.1.0 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]     Checking tokio-tcp v0.1.0 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]     Checking tokio-udp v0.1.0 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]     Checking tokio v0.1.6 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]     Checking foo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut threadpool = threadpool_builder.build();
[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:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut threadpool = threadpool_builder.build();
[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 10.47s
[INFO] running `"docker" "inspect" "3b8658ca8074cada3d63b3ff8006ac82877329b2305f1af6fffe93921e0febad"`
[INFO] running `"docker" "rm" "-f" "3b8658ca8074cada3d63b3ff8006ac82877329b2305f1af6fffe93921e0febad"`
[INFO] [stdout] 3b8658ca8074cada3d63b3ff8006ac82877329b2305f1af6fffe93921e0febad