[INFO] updating cached repository willsalz/inverted_index
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/willsalz/inverted_index
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/willsalz/inverted_index" "work/ex/beta-1.37-6/sources/1.36.0/gh/willsalz/inverted_index"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/willsalz/inverted_index'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/willsalz/inverted_index" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/willsalz/inverted_index"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/willsalz/inverted_index'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fb03bc52766dbfef6bd4ab5a856a639429a37c4a
[INFO] sha for GitHub repo willsalz/inverted_index: fb03bc52766dbfef6bd4ab5a856a639429a37c4a
[INFO] validating manifest of willsalz/inverted_index 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 willsalz/inverted_index 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 willsalz/inverted_index
[INFO] finished frobbing willsalz/inverted_index
[INFO] frobbed toml for willsalz/inverted_index written to work/ex/beta-1.37-6/sources/1.36.0/gh/willsalz/inverted_index/Cargo.toml
[INFO] started frobbing willsalz/inverted_index
[INFO] finished frobbing willsalz/inverted_index
[INFO] frobbed toml for willsalz/inverted_index written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/willsalz/inverted_index/Cargo.toml
[INFO] crate willsalz/inverted_index 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] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing willsalz/inverted_index against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/willsalz/inverted_index:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 9ee7cca1592665fc875a18b6d865d3ad426916dc59d415defa8c476efd48cabc
[INFO] running `"docker" "start" "-a" "9ee7cca1592665fc875a18b6d865d3ad426916dc59d415defa8c476efd48cabc"`
[INFO] [stderr]    Compiling inverted_index v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 55 |         for (_, mut posting_list) in &mut self.index {
[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 1.91s
[INFO] running `"docker" "inspect" "9ee7cca1592665fc875a18b6d865d3ad426916dc59d415defa8c476efd48cabc"`
[INFO] running `"docker" "rm" "-f" "9ee7cca1592665fc875a18b6d865d3ad426916dc59d415defa8c476efd48cabc"`
[INFO] [stdout] 9ee7cca1592665fc875a18b6d865d3ad426916dc59d415defa8c476efd48cabc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/willsalz/inverted_index:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] c0d3e411a215af3289010808be0dae38035ec82ee8ee513661f293d62a536adf
[INFO] running `"docker" "start" "-a" "c0d3e411a215af3289010808be0dae38035ec82ee8ee513661f293d62a536adf"`
[INFO] [stderr]    Compiling inverted_index v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 55 |         for (_, mut posting_list) in &mut self.index {
[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 1.31s
[INFO] running `"docker" "inspect" "c0d3e411a215af3289010808be0dae38035ec82ee8ee513661f293d62a536adf"`
[INFO] running `"docker" "rm" "-f" "c0d3e411a215af3289010808be0dae38035ec82ee8ee513661f293d62a536adf"`
[INFO] [stdout] c0d3e411a215af3289010808be0dae38035ec82ee8ee513661f293d62a536adf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/willsalz/inverted_index:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] f5dafc644189c89cea6abb7880c94d9658544c157381c1e0e29b4c3e55a75ad0
[INFO] running `"docker" "start" "-a" "f5dafc644189c89cea6abb7880c94d9658544c157381c1e0e29b4c3e55a75ad0"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/inverted_index-f9fb99657981eb72
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/inverted_index-e2dcf240bc2e088b
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_index_document ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/test_index-31aab85db38c1e13
[INFO] [stderr]    Doc-tests inverted_index
[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" "f5dafc644189c89cea6abb7880c94d9658544c157381c1e0e29b4c3e55a75ad0"`
[INFO] running `"docker" "rm" "-f" "f5dafc644189c89cea6abb7880c94d9658544c157381c1e0e29b4c3e55a75ad0"`
[INFO] [stdout] f5dafc644189c89cea6abb7880c94d9658544c157381c1e0e29b4c3e55a75ad0