[INFO] updating cached repository darshanparajuli/countcode
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/darshanparajuli/countcode
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/darshanparajuli/countcode" "work/ex/beta-1.38-1/sources/1.37.0/gh/darshanparajuli/countcode"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/darshanparajuli/countcode'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/darshanparajuli/countcode" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/darshanparajuli/countcode"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/darshanparajuli/countcode'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8eabee50e060d41f2ecb95cd12ac584c005b7188
[INFO] sha for GitHub repo darshanparajuli/countcode: 8eabee50e060d41f2ecb95cd12ac584c005b7188
[INFO] validating manifest of darshanparajuli/countcode 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 darshanparajuli/countcode 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 darshanparajuli/countcode
[INFO] finished frobbing darshanparajuli/countcode
[INFO] frobbed toml for darshanparajuli/countcode written to work/ex/beta-1.38-1/sources/1.37.0/gh/darshanparajuli/countcode/Cargo.toml
[INFO] started frobbing darshanparajuli/countcode
[INFO] finished frobbing darshanparajuli/countcode
[INFO] frobbed toml for darshanparajuli/countcode written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/darshanparajuli/countcode/Cargo.toml
[INFO] crate darshanparajuli/countcode 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 darshanparajuli/countcode 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/darshanparajuli/countcode:/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] 79ebb012578ec8515e22638bcd57c9621157dcfa3ff11c1aea4f31089f8e88d2
[INFO] running `"docker" "start" "-a" "79ebb012578ec8515e22638bcd57c9621157dcfa3ff11c1aea4f31089f8e88d2"`
[INFO] [stderr]    Compiling crossbeam-channel v0.3.8
[INFO] [stderr]    Compiling bstr v0.1.2
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling globset v0.4.3
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling ignore v0.4.7
[INFO] [stderr]    Compiling countcode v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/counter.rs:146:25
[INFO] [stderr]     |
[INFO] [stderr] 146 |                     let mut line = match line_reader.read_line() {
[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 20.66s
[INFO] running `"docker" "inspect" "79ebb012578ec8515e22638bcd57c9621157dcfa3ff11c1aea4f31089f8e88d2"`
[INFO] running `"docker" "rm" "-f" "79ebb012578ec8515e22638bcd57c9621157dcfa3ff11c1aea4f31089f8e88d2"`
[INFO] [stdout] 79ebb012578ec8515e22638bcd57c9621157dcfa3ff11c1aea4f31089f8e88d2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/darshanparajuli/countcode:/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] 125f88f80a362b209608fa709f152399b0ff89dcdd8281142c4b1cf435b79c09
[INFO] running `"docker" "start" "-a" "125f88f80a362b209608fa709f152399b0ff89dcdd8281142c4b1cf435b79c09"`
[INFO] [stderr]    Compiling countcode v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/counter.rs:146:25
[INFO] [stderr]     |
[INFO] [stderr] 146 |                     let mut line = match line_reader.read_line() {
[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 1.42s
[INFO] running `"docker" "inspect" "125f88f80a362b209608fa709f152399b0ff89dcdd8281142c4b1cf435b79c09"`
[INFO] running `"docker" "rm" "-f" "125f88f80a362b209608fa709f152399b0ff89dcdd8281142c4b1cf435b79c09"`
[INFO] [stdout] 125f88f80a362b209608fa709f152399b0ff89dcdd8281142c4b1cf435b79c09
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/darshanparajuli/countcode:/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] 1489bb73065c3527fb943507c8efd524608d0871c1d212491baf8dab487425e6
[INFO] running `"docker" "start" "-a" "1489bb73065c3527fb943507c8efd524608d0871c1d212491baf8dab487425e6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/countcode-8a3eff02675ede7e
[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" "1489bb73065c3527fb943507c8efd524608d0871c1d212491baf8dab487425e6"`
[INFO] running `"docker" "rm" "-f" "1489bb73065c3527fb943507c8efd524608d0871c1d212491baf8dab487425e6"`
[INFO] [stdout] 1489bb73065c3527fb943507c8efd524608d0871c1d212491baf8dab487425e6