[INFO] updating cached repository Keiji2827/change_profile
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Keiji2827/change_profile
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Keiji2827/change_profile" "work/ex/beta-1.38-1/sources/1.37.0/gh/Keiji2827/change_profile"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Keiji2827/change_profile'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Keiji2827/change_profile" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Keiji2827/change_profile"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Keiji2827/change_profile'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 236fa6e888b67b133a576a011ae8367c86b7f2e4
[INFO] sha for GitHub repo Keiji2827/change_profile: 236fa6e888b67b133a576a011ae8367c86b7f2e4
[INFO] validating manifest of Keiji2827/change_profile on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Keiji2827/change_profile on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Keiji2827/change_profile
[INFO] finished frobbing Keiji2827/change_profile
[INFO] frobbed toml for Keiji2827/change_profile written to work/ex/beta-1.38-1/sources/1.37.0/gh/Keiji2827/change_profile/Cargo.toml
[INFO] started frobbing Keiji2827/change_profile
[INFO] finished frobbing Keiji2827/change_profile
[INFO] frobbed toml for Keiji2827/change_profile written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Keiji2827/change_profile/Cargo.toml
[INFO] crate Keiji2827/change_profile already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Keiji2827/change_profile against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Keiji2827/change_profile:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 136e4ce3044136be2b990e1cc880d702cb0dd1f4aeb2e5411b50a54a83dc4432
[INFO] running `"docker" "start" "-a" "136e4ce3044136be2b990e1cc880d702cb0dd1f4aeb2e5411b50a54a83dc4432"`
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling change_profile v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let mut reader = BufReader::new(file);
[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 12.67s
[INFO] running `"docker" "inspect" "136e4ce3044136be2b990e1cc880d702cb0dd1f4aeb2e5411b50a54a83dc4432"`
[INFO] running `"docker" "rm" "-f" "136e4ce3044136be2b990e1cc880d702cb0dd1f4aeb2e5411b50a54a83dc4432"`
[INFO] [stdout] 136e4ce3044136be2b990e1cc880d702cb0dd1f4aeb2e5411b50a54a83dc4432
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Keiji2827/change_profile:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 48cf40b683e22c784c4f5a6347fa2b0b7caee1270d7bc39bdeb0e7f06b6b7ea5
[INFO] running `"docker" "start" "-a" "48cf40b683e22c784c4f5a6347fa2b0b7caee1270d7bc39bdeb0e7f06b6b7ea5"`
[INFO] [stderr]    Compiling change_profile v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let mut reader = BufReader::new(file);
[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 0.84s
[INFO] running `"docker" "inspect" "48cf40b683e22c784c4f5a6347fa2b0b7caee1270d7bc39bdeb0e7f06b6b7ea5"`
[INFO] running `"docker" "rm" "-f" "48cf40b683e22c784c4f5a6347fa2b0b7caee1270d7bc39bdeb0e7f06b6b7ea5"`
[INFO] [stdout] 48cf40b683e22c784c4f5a6347fa2b0b7caee1270d7bc39bdeb0e7f06b6b7ea5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Keiji2827/change_profile:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 81bd0a9a6f87dfda5a2910b94b5b63c816f84a1303f78e58ad21c46b3df807c2
[INFO] running `"docker" "start" "-a" "81bd0a9a6f87dfda5a2910b94b5b63c816f84a1303f78e58ad21c46b3df807c2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/change_profile-440c2647fe447a08
[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" "81bd0a9a6f87dfda5a2910b94b5b63c816f84a1303f78e58ad21c46b3df807c2"`
[INFO] running `"docker" "rm" "-f" "81bd0a9a6f87dfda5a2910b94b5b63c816f84a1303f78e58ad21c46b3df807c2"`
[INFO] [stdout] 81bd0a9a6f87dfda5a2910b94b5b63c816f84a1303f78e58ad21c46b3df807c2