[INFO] updating cached repository jD91mZM2/rust-import
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jD91mZM2/rust-import
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jD91mZM2/rust-import" "work/ex/beta-1.37-6/sources/1.36.0/gh/jD91mZM2/rust-import"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/jD91mZM2/rust-import'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jD91mZM2/rust-import" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jD91mZM2/rust-import"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jD91mZM2/rust-import'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c41881b5202691db94864e337f96a3dddbda98b7
[INFO] sha for GitHub repo jD91mZM2/rust-import: c41881b5202691db94864e337f96a3dddbda98b7
[INFO] validating manifest of jD91mZM2/rust-import 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 jD91mZM2/rust-import 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 jD91mZM2/rust-import
[INFO] finished frobbing jD91mZM2/rust-import
[INFO] frobbed toml for jD91mZM2/rust-import written to work/ex/beta-1.37-6/sources/1.36.0/gh/jD91mZM2/rust-import/Cargo.toml
[INFO] started frobbing jD91mZM2/rust-import
[INFO] finished frobbing jD91mZM2/rust-import
[INFO] frobbed toml for jD91mZM2/rust-import written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jD91mZM2/rust-import/Cargo.toml
[INFO] crate jD91mZM2/rust-import 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 jD91mZM2/rust-import against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jD91mZM2/rust-import:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 1e2554e70a02642cd9f7ed7766dd247e5ee2d68176337f954cd99195031e7377
[INFO] running `"docker" "start" "-a" "1e2554e70a02642cd9f7ed7766dd247e5ee2d68176337f954cd99195031e7377"`
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling cc v1.0.14
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling rustc-demangle v0.1.7
[INFO] [stderr]    Compiling vec_map v0.8.0
[INFO] [stderr]    Compiling bitflags v1.0.2
[INFO] [stderr]    Compiling serde v1.0.43
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling syn v0.13.4
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling backtrace v0.3.6
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling serde_json v1.0.16
[INFO] [stderr]    Compiling serde_derive_internals v0.23.1
[INFO] [stderr]    Compiling serde_derive v1.0.43
[INFO] [stderr]    Compiling rust-import v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:277:29
[INFO] [stderr]     |
[INFO] [stderr] 277 |                         let mut list = &mut group.items;
[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 1m 22s
[INFO] running `"docker" "inspect" "1e2554e70a02642cd9f7ed7766dd247e5ee2d68176337f954cd99195031e7377"`
[INFO] running `"docker" "rm" "-f" "1e2554e70a02642cd9f7ed7766dd247e5ee2d68176337f954cd99195031e7377"`
[INFO] [stdout] 1e2554e70a02642cd9f7ed7766dd247e5ee2d68176337f954cd99195031e7377
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jD91mZM2/rust-import:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 67373f7e5f8f5fa86c0b2014ba4cf309ae508aea36875b0b9f2f333ee89c1239
[INFO] running `"docker" "start" "-a" "67373f7e5f8f5fa86c0b2014ba4cf309ae508aea36875b0b9f2f333ee89c1239"`
[INFO] [stderr]    Compiling rust-import v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:277:29
[INFO] [stderr]     |
[INFO] [stderr] 277 |                         let mut list = &mut group.items;
[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 1.30s
[INFO] running `"docker" "inspect" "67373f7e5f8f5fa86c0b2014ba4cf309ae508aea36875b0b9f2f333ee89c1239"`
[INFO] running `"docker" "rm" "-f" "67373f7e5f8f5fa86c0b2014ba4cf309ae508aea36875b0b9f2f333ee89c1239"`
[INFO] [stdout] 67373f7e5f8f5fa86c0b2014ba4cf309ae508aea36875b0b9f2f333ee89c1239
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/jD91mZM2/rust-import:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 92da3a01ab4500ec9e81c09394147f31d4db0a6d8709d1adc3ee7236fe77e37d
[INFO] running `"docker" "start" "-a" "92da3a01ab4500ec9e81c09394147f31d4db0a6d8709d1adc3ee7236fe77e37d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_import-6824182d42977488
[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" "92da3a01ab4500ec9e81c09394147f31d4db0a6d8709d1adc3ee7236fe77e37d"`
[INFO] running `"docker" "rm" "-f" "92da3a01ab4500ec9e81c09394147f31d4db0a6d8709d1adc3ee7236fe77e37d"`
[INFO] [stdout] 92da3a01ab4500ec9e81c09394147f31d4db0a6d8709d1adc3ee7236fe77e37d