Dec 19 10:49:57.075 INFO checking pnathan/signifier against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 10:49:57.075 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/pnathan/signifier:/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=forbid" "-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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 10:49:57.543 INFO [stdout] ac1c6d5cf7e1e0225d583b857abcc42fe0dea657c800f9f4d36a996d8ba59fce
Dec 19 10:49:57.546 INFO running `"docker" "start" "-a" "ac1c6d5cf7e1e0225d583b857abcc42fe0dea657c800f9f4d36a996d8ba59fce"`
Dec 19 10:49:59.970 INFO [stderr]     Checking serde v0.9.13
Dec 19 10:49:59.970 INFO [stderr]    Compiling hyper v0.10.7
Dec 19 10:49:59.970 INFO [stderr]    Compiling syn v0.11.10
Dec 19 10:49:59.970 INFO [stderr]     Checking flame v0.1.11
Dec 19 10:49:59.970 INFO [stderr]     Checking semver-parser v0.6.2
Dec 19 10:50:01.714 INFO [stderr]     Checking semver v0.5.1
Dec 19 10:50:12.265 INFO [stderr]    Compiling serde_codegen_internals v0.14.2
Dec 19 10:50:15.088 INFO [stderr]    Compiling serde_derive v0.9.13
Dec 19 10:50:17.880 INFO [stderr]     Checking serde_json v0.9.10
Dec 19 10:50:23.614 INFO [stderr]     Checking rusted_cypher v1.0.0
Dec 19 10:50:24.805 INFO [stderr]     Checking signifier v1.0.0 (/opt/crater/workdir)
Dec 19 10:50:25.924 INFO [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
Dec 19 10:50:25.925 INFO [stderr]    --> src/main.rs:135:28
Dec 19 10:50:25.925 INFO [stderr]     |
Dec 19 10:50:25.925 INFO [stderr] 135 |                    match e.cause() {
Dec 19 10:50:25.925 INFO [stderr]     |                            ^^^^^
Dec 19 10:50:25.925 INFO [stderr]     |
Dec 19 10:50:25.925 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 19 10:50:25.925 INFO [stderr] 
Dec 19 10:50:25.933 INFO [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
Dec 19 10:50:25.933 INFO [stderr]    --> src/main.rs:135:28
Dec 19 10:50:25.933 INFO [stderr]     |
Dec 19 10:50:25.933 INFO [stderr] 135 |                    match e.cause() {
Dec 19 10:50:25.933 INFO [stderr]     |                            ^^^^^
Dec 19 10:50:25.940 INFO [stderr]     |
Dec 19 10:50:25.940 INFO [stderr]     = note: #[warn(deprecated)] on by default
Dec 19 10:50:25.940 INFO [stderr] 
Dec 19 10:50:26.111 INFO [stderr] warning: unused variable: `tx_collector`
Dec 19 10:50:26.111 INFO [stderr]    --> src/main.rs:199:17
Dec 19 10:50:26.112 INFO [stderr]     |
Dec 19 10:50:26.112 INFO [stderr] 199 |         let mut tx_collector = tx_collector.clone();
Dec 19 10:50:26.112 INFO [stderr]     |                 ^^^^^^^^^^^^ help: consider using `_tx_collector` instead
Dec 19 10:50:26.113 INFO [stderr]     |
Dec 19 10:50:26.113 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 10:50:26.113 INFO [stderr] 
Dec 19 10:50:26.114 INFO [stderr] warning: unused variable: `word_file_map`
Dec 19 10:50:26.114 INFO [stderr]    --> src/main.rs:331:13
Dec 19 10:50:26.114 INFO [stderr]     |
Dec 19 10:50:26.115 INFO [stderr] 331 |     let mut word_file_map : HashMap<String, Vec<String>> = HashMap::new();
Dec 19 10:50:26.115 INFO [stderr]     |             ^^^^^^^^^^^^^ help: consider using `_word_file_map` instead
Dec 19 10:50:26.115 INFO [stderr] 
Dec 19 10:50:26.140 INFO [stderr] warning: unused variable: `tx_collector`
Dec 19 10:50:26.141 INFO [stderr]    --> src/main.rs:199:17
Dec 19 10:50:26.141 INFO [stderr]     |
Dec 19 10:50:26.141 INFO [stderr] 199 |         let mut tx_collector = tx_collector.clone();
Dec 19 10:50:26.141 INFO [stderr]     |                 ^^^^^^^^^^^^ help: consider using `_tx_collector` instead
Dec 19 10:50:26.141 INFO [stderr]     |
Dec 19 10:50:26.142 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 10:50:26.142 INFO [stderr] 
Dec 19 10:50:26.142 INFO [stderr] warning: unused variable: `word_file_map`
Dec 19 10:50:26.142 INFO [stderr]    --> src/main.rs:331:13
Dec 19 10:50:26.142 INFO [stderr]     |
Dec 19 10:50:26.143 INFO [stderr] 331 |     let mut word_file_map : HashMap<String, Vec<String>> = HashMap::new();
Dec 19 10:50:26.143 INFO [stderr]     |             ^^^^^^^^^^^^^ help: consider using `_word_file_map` instead
Dec 19 10:50:26.143 INFO [stderr] 
Dec 19 10:50:26.200 INFO [stderr] warning: variable does not need to be mutable
Dec 19 10:50:26.201 INFO [stderr]    --> src/main.rs:331:9
Dec 19 10:50:26.201 INFO [stderr]     |
Dec 19 10:50:26.201 INFO [stderr] 331 |     let mut word_file_map : HashMap<String, Vec<String>> = HashMap::new();
Dec 19 10:50:26.202 INFO [stderr]     |         ----^^^^^^^^^^^^^
Dec 19 10:50:26.202 INFO [stderr]     |         |
Dec 19 10:50:26.202 INFO [stderr]     |         help: remove this `mut`
Dec 19 10:50:26.203 INFO [stderr]     |
Dec 19 10:50:26.203 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 10:50:26.203 INFO [stderr] 
Dec 19 10:50:26.216 INFO [stderr] warning: variable does not need to be mutable
Dec 19 10:50:26.216 INFO [stderr]    --> src/main.rs:331:9
Dec 19 10:50:26.217 INFO [stderr]     |
Dec 19 10:50:26.217 INFO [stderr] 331 |     let mut word_file_map : HashMap<String, Vec<String>> = HashMap::new();
Dec 19 10:50:26.217 INFO [stderr]     |         ----^^^^^^^^^^^^^
Dec 19 10:50:26.218 INFO [stderr]     |         |
Dec 19 10:50:26.218 INFO [stderr]     |         help: remove this `mut`
Dec 19 10:50:26.218 INFO [stderr]     |
Dec 19 10:50:26.219 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 10:50:26.219 INFO [stderr] 
Dec 19 10:50:26.278 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.55s
Dec 19 10:50:27.719 INFO running `"docker" "inspect" "ac1c6d5cf7e1e0225d583b857abcc42fe0dea657c800f9f4d36a996d8ba59fce"`
Dec 19 10:50:28.092 INFO running `"docker" "rm" "-f" "ac1c6d5cf7e1e0225d583b857abcc42fe0dea657c800f9f4d36a996d8ba59fce"`
Dec 19 10:50:28.428 INFO [stdout] ac1c6d5cf7e1e0225d583b857abcc42fe0dea657c800f9f4d36a996d8ba59fce