[INFO] updating cached repository tokarzkj/rust-minigrep
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tokarzkj/rust-minigrep
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tokarzkj/rust-minigrep" "work/ex/beta-1.38-1/sources/1.37.0/gh/tokarzkj/rust-minigrep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/tokarzkj/rust-minigrep'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tokarzkj/rust-minigrep" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tokarzkj/rust-minigrep"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tokarzkj/rust-minigrep'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0fc02f99409471250747aea55eae7d7b860bdef9
[INFO] sha for GitHub repo tokarzkj/rust-minigrep: 0fc02f99409471250747aea55eae7d7b860bdef9
[INFO] validating manifest of tokarzkj/rust-minigrep 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 tokarzkj/rust-minigrep 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 tokarzkj/rust-minigrep
[INFO] finished frobbing tokarzkj/rust-minigrep
[INFO] frobbed toml for tokarzkj/rust-minigrep written to work/ex/beta-1.38-1/sources/1.37.0/gh/tokarzkj/rust-minigrep/Cargo.toml
[INFO] started frobbing tokarzkj/rust-minigrep
[INFO] finished frobbing tokarzkj/rust-minigrep
[INFO] frobbed toml for tokarzkj/rust-minigrep written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tokarzkj/rust-minigrep/Cargo.toml
[INFO] crate tokarzkj/rust-minigrep 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 tokarzkj/rust-minigrep against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tokarzkj/rust-minigrep:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] d3c22c7acfcedc48f40dee3e13013dc2f332af557b493e0e7314e5915f91183e
[INFO] running `"docker" "start" "-a" "d3c22c7acfcedc48f40dee3e13013dc2f332af557b493e0e7314e5915f91183e"`
[INFO] [stderr]    Compiling minigrep v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]  --> src/main.rs:9:53
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let config = Config::new(&args).unwrap_or_else(|err| {
[INFO] [stderr]   |                                                     ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/main.rs:13:16
[INFO] [stderr]    |
[INFO] [stderr] 13 |     if let Err(e) = minigrep::run(config) {
[INFO] [stderr]    |                ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `"docker" "inspect" "d3c22c7acfcedc48f40dee3e13013dc2f332af557b493e0e7314e5915f91183e"`
[INFO] running `"docker" "rm" "-f" "d3c22c7acfcedc48f40dee3e13013dc2f332af557b493e0e7314e5915f91183e"`
[INFO] [stdout] d3c22c7acfcedc48f40dee3e13013dc2f332af557b493e0e7314e5915f91183e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tokarzkj/rust-minigrep:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 622ae7b490dbf75514f72020e443183e101fd8040ed1d3d735dd6cd5f72207fc
[INFO] running `"docker" "start" "-a" "622ae7b490dbf75514f72020e443183e101fd8040ed1d3d735dd6cd5f72207fc"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling minigrep v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]  --> src/main.rs:9:53
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let config = Config::new(&args).unwrap_or_else(|err| {
[INFO] [stderr]   |                                                     ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/main.rs:13:16
[INFO] [stderr]    |
[INFO] [stderr] 13 |     if let Err(e) = minigrep::run(config) {
[INFO] [stderr]    |                ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `"docker" "inspect" "622ae7b490dbf75514f72020e443183e101fd8040ed1d3d735dd6cd5f72207fc"`
[INFO] running `"docker" "rm" "-f" "622ae7b490dbf75514f72020e443183e101fd8040ed1d3d735dd6cd5f72207fc"`
[INFO] [stdout] 622ae7b490dbf75514f72020e443183e101fd8040ed1d3d735dd6cd5f72207fc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tokarzkj/rust-minigrep:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 49d1e0ba7ffce1ebb5528de3aac69cf3c08154ded59b95db89d17d1ce6aa37f0
[INFO] running `"docker" "start" "-a" "49d1e0ba7ffce1ebb5528de3aac69cf3c08154ded59b95db89d17d1ce6aa37f0"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/minigrep-f788900508bc8193
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::case_insensitive ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/minigrep-2526d647343947d2
[INFO] [stdout] test tests::one_result ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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] [stderr]    Doc-tests minigrep
[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" "49d1e0ba7ffce1ebb5528de3aac69cf3c08154ded59b95db89d17d1ce6aa37f0"`
[INFO] running `"docker" "rm" "-f" "49d1e0ba7ffce1ebb5528de3aac69cf3c08154ded59b95db89d17d1ce6aa37f0"`
[INFO] [stdout] 49d1e0ba7ffce1ebb5528de3aac69cf3c08154ded59b95db89d17d1ce6aa37f0