[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/beta-1.37-6/sources/1.36.0/gh/Idolf/rust-str-fuzz"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Idolf/rust-str-fuzz'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Idolf/rust-str-fuzz" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Idolf/rust-str-fuzz"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Idolf/rust-str-fuzz on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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/beta-1.37-6/sources/1.36.0/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/beta-1.37-6/sources/beta-2019-07-23/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" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Idolf/rust-str-fuzz against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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=warn" "-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 4ce7d3b4fb9034be1b60c5db06a0d2e284770eb6b20f58c479b4a03f912a67ab
[INFO] running `"docker" "start" "-a" "4ce7d3b4fb9034be1b60c5db06a0d2e284770eb6b20f58c479b4a03f912a67ab"`
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling tokio-executor v0.1.2 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling tokio-io v0.1.6 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling mio v0.6.14
[INFO] [stderr]    Compiling tokio-threadpool v0.1.3 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling tokio-timer v0.2.3 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling tokio-reactor v0.1.1 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling tokio-fs v0.1.0 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling tokio-udp v0.1.0 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling tokio-tcp v0.1.0 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling tokio v0.1.6 (https://github.com/tokio-rs/tokio.git#8c791fd0)
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 10.03s
[INFO] running `"docker" "inspect" "4ce7d3b4fb9034be1b60c5db06a0d2e284770eb6b20f58c479b4a03f912a67ab"`
[INFO] running `"docker" "rm" "-f" "4ce7d3b4fb9034be1b60c5db06a0d2e284770eb6b20f58c479b4a03f912a67ab"`
[INFO] [stdout] 4ce7d3b4fb9034be1b60c5db06a0d2e284770eb6b20f58c479b4a03f912a67ab
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6790b9d25779ae8a7d74d2460b8b286ffb0d6b03d9217b1521fdb38afcf00714
[INFO] running `"docker" "start" "-a" "6790b9d25779ae8a7d74d2460b8b286ffb0d6b03d9217b1521fdb38afcf00714"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "6790b9d25779ae8a7d74d2460b8b286ffb0d6b03d9217b1521fdb38afcf00714"`
[INFO] running `"docker" "rm" "-f" "6790b9d25779ae8a7d74d2460b8b286ffb0d6b03d9217b1521fdb38afcf00714"`
[INFO] [stdout] 6790b9d25779ae8a7d74d2460b8b286ffb0d6b03d9217b1521fdb38afcf00714
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] aef46f433b79aa5124d1d3b309bf5352e99bf418966ac3ddc6e5cd1352b2eb32
[INFO] running `"docker" "start" "-a" "aef46f433b79aa5124d1d3b309bf5352e99bf418966ac3ddc6e5cd1352b2eb32"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/foo-6af961bdd18e979f
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "aef46f433b79aa5124d1d3b309bf5352e99bf418966ac3ddc6e5cd1352b2eb32"`
[INFO] running `"docker" "rm" "-f" "aef46f433b79aa5124d1d3b309bf5352e99bf418966ac3ddc6e5cd1352b2eb32"`
[INFO] [stdout] aef46f433b79aa5124d1d3b309bf5352e99bf418966ac3ddc6e5cd1352b2eb32