[INFO] updating cached repository hbansal0122/spell-check
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hbansal0122/spell-check
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hbansal0122/spell-check" "work/ex/beta-1.38-1/sources/1.37.0/gh/hbansal0122/spell-check"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/hbansal0122/spell-check'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hbansal0122/spell-check" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hbansal0122/spell-check"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hbansal0122/spell-check'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e2e94841bc40baee976ef9241213857f01d6b31e
[INFO] sha for GitHub repo hbansal0122/spell-check: e2e94841bc40baee976ef9241213857f01d6b31e
[INFO] validating manifest of hbansal0122/spell-check 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 hbansal0122/spell-check 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 hbansal0122/spell-check
[INFO] finished frobbing hbansal0122/spell-check
[INFO] frobbed toml for hbansal0122/spell-check written to work/ex/beta-1.38-1/sources/1.37.0/gh/hbansal0122/spell-check/Cargo.toml
[INFO] started frobbing hbansal0122/spell-check
[INFO] finished frobbing hbansal0122/spell-check
[INFO] frobbed toml for hbansal0122/spell-check written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hbansal0122/spell-check/Cargo.toml
[INFO] crate hbansal0122/spell-check 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 hbansal0122/spell-check 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hbansal0122/spell-check:/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] 07449c09388761fd0f84fedca598fc59ea9cea2e8812b232ea7f76f357880cf0
[INFO] running `"docker" "start" "-a" "07449c09388761fd0f84fedca598fc59ea9cea2e8812b232ea7f76f357880cf0"`
[INFO] [stderr]    Compiling stdinout v0.4.0
[INFO] [stderr]    Compiling syn v0.14.8
[INFO] [stderr]    Compiling approx v0.2.1
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling ndarray v0.11.2
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]    Compiling failure v0.1.2
[INFO] [stderr]    Compiling speller v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:216:13
[INFO] [stderr]     |
[INFO] [stderr] 216 |         let mut local_word = item.term.to_string();
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:223:17
[INFO] [stderr]     |
[INFO] [stderr] 223 |             let mut counter:usize = 1;
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.53s
[INFO] running `"docker" "inspect" "07449c09388761fd0f84fedca598fc59ea9cea2e8812b232ea7f76f357880cf0"`
[INFO] running `"docker" "rm" "-f" "07449c09388761fd0f84fedca598fc59ea9cea2e8812b232ea7f76f357880cf0"`
[INFO] [stdout] 07449c09388761fd0f84fedca598fc59ea9cea2e8812b232ea7f76f357880cf0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hbansal0122/spell-check:/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] e7ff062836178abddc2069fd1a3fcb40bf22841d89169644653b649abb331e26
[INFO] running `"docker" "start" "-a" "e7ff062836178abddc2069fd1a3fcb40bf22841d89169644653b649abb331e26"`
[INFO] [stderr]    Compiling speller v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:216:13
[INFO] [stderr]     |
[INFO] [stderr] 216 |         let mut local_word = item.term.to_string();
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:223:17
[INFO] [stderr]     |
[INFO] [stderr] 223 |             let mut counter:usize = 1;
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.52s
[INFO] running `"docker" "inspect" "e7ff062836178abddc2069fd1a3fcb40bf22841d89169644653b649abb331e26"`
[INFO] running `"docker" "rm" "-f" "e7ff062836178abddc2069fd1a3fcb40bf22841d89169644653b649abb331e26"`
[INFO] [stdout] e7ff062836178abddc2069fd1a3fcb40bf22841d89169644653b649abb331e26
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hbansal0122/spell-check:/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] a02ce3bfc14152fbacaeee282642d2f3efe268c9abb1d1f3a654bc25df2846d3
[INFO] running `"docker" "start" "-a" "a02ce3bfc14152fbacaeee282642d2f3efe268c9abb1d1f3a654bc25df2846d3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/speller-742ba5aa83c6a7fa
[INFO] [stdout] test tokeniser::tests::tokeniser ... ok
[INFO] [stdout] test spell_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "a02ce3bfc14152fbacaeee282642d2f3efe268c9abb1d1f3a654bc25df2846d3"`
[INFO] running `"docker" "rm" "-f" "a02ce3bfc14152fbacaeee282642d2f3efe268c9abb1d1f3a654bc25df2846d3"`
[INFO] [stdout] a02ce3bfc14152fbacaeee282642d2f3efe268c9abb1d1f3a654bc25df2846d3