[INFO] updating cached repository pnathan/signifier
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pnathan/signifier
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pnathan/signifier" "work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/pnathan/signifier"`
[INFO] [stderr] Cloning into 'work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/pnathan/signifier'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pnathan/signifier" "work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/gh/pnathan/signifier"`
[INFO] [stderr] Cloning into 'work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/gh/pnathan/signifier'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c7d4b4fa772fd1e301901b453dc81e0cac60f3ce
[INFO] sha for GitHub repo pnathan/signifier: c7d4b4fa772fd1e301901b453dc81e0cac60f3ce
[INFO] validating manifest of pnathan/signifier on toolchain master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of pnathan/signifier on toolchain try#bad365140e1e8233b42b21af70a407f14ce5fec5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing pnathan/signifier
[INFO] finished frobbing pnathan/signifier
[INFO] frobbed toml for pnathan/signifier written to work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/gh/pnathan/signifier/Cargo.toml
[INFO] started frobbing pnathan/signifier
[INFO] finished frobbing pnathan/signifier
[INFO] frobbed toml for pnathan/signifier written to work/ex/pr-56896/sources/try#bad365140e1e8233b42b21af70a407f14ce5fec5/gh/pnathan/signifier/Cargo.toml
[INFO] crate pnathan/signifier has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+bad365140e1e8233b42b21af70a407f14ce5fec5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking pnathan/signifier against master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980 for pr-56896
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56896/worker-6/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56896/sources/master#adbfec229ce07ff4b2a7bf2d6dec2d13cb224980/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" "+adbfec229ce07ff4b2a7bf2d6dec2d13cb224980-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 46def139726512e0692ac5d841c39b8da34cd9490bb571eb178f4508f30f8e65
[INFO] running `"docker" "start" "-a" "46def139726512e0692ac5d841c39b8da34cd9490bb571eb178f4508f30f8e65"`
[INFO] [stderr]     Checking lazy_static v0.2.6
[INFO] [stderr]     Checking serde v0.9.13
[INFO] [stderr]     Checking quick-error v1.1.0
[INFO] [stderr]     Checking time v0.1.36
[INFO] [stderr]    Compiling hyper v0.10.7
[INFO] [stderr]    Compiling syn v0.11.10
[INFO] [stderr]     Checking semver-parser v0.6.2
[INFO] [stderr]     Checking flame v0.1.11
[INFO] [stderr]     Checking semver v0.5.1
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[INFO] [stderr]    Compiling serde_derive v0.9.13
[INFO] [stderr]     Checking serde_json v0.9.10
[INFO] [stderr]     Checking rusted_cypher v1.0.0
[INFO] [stderr]     Checking signifier v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/main.rs:135:28
[INFO] [stderr]     |
[INFO] [stderr] 135 |                    match e.cause() {
[INFO] [stderr]     |                            ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/main.rs:135:28
[INFO] [stderr]     |
[INFO] [stderr] 135 |                    match e.cause() {
[INFO] [stderr]     |                            ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tx_collector`
[INFO] [stderr]    --> src/main.rs:199:17
[INFO] [stderr]     |
[INFO] [stderr] 199 |         let mut tx_collector = tx_collector.clone();
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: consider using `_tx_collector` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word_file_map`
[INFO] [stderr]    --> src/main.rs:331:13
[INFO] [stderr]     |
[INFO] [stderr] 331 |     let mut word_file_map : HashMap<String, Vec<String>> = HashMap::new();
[INFO] [stderr]     |             ^^^^^^^^^^^^^ help: consider using `_word_file_map` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:331:9
[INFO] [stderr]     |
[INFO] [stderr] 331 |     let mut word_file_map : HashMap<String, Vec<String>> = HashMap::new();
[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: unused variable: `tx_collector`
[INFO] [stderr]    --> src/main.rs:199:17
[INFO] [stderr]     |
[INFO] [stderr] 199 |         let mut tx_collector = tx_collector.clone();
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: consider using `_tx_collector` instead
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word_file_map`
[INFO] [stderr]    --> src/main.rs:331:13
[INFO] [stderr]     |
[INFO] [stderr] 331 |     let mut word_file_map : HashMap<String, Vec<String>> = HashMap::new();
[INFO] [stderr]     |             ^^^^^^^^^^^^^ help: consider using `_word_file_map` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:331:9
[INFO] [stderr]     |
[INFO] [stderr] 331 |     let mut word_file_map : HashMap<String, Vec<String>> = HashMap::new();
[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 29.52s
[INFO] running `"docker" "inspect" "46def139726512e0692ac5d841c39b8da34cd9490bb571eb178f4508f30f8e65"`
[INFO] running `"docker" "rm" "-f" "46def139726512e0692ac5d841c39b8da34cd9490bb571eb178f4508f30f8e65"`
[INFO] [stdout] 46def139726512e0692ac5d841c39b8da34cd9490bb571eb178f4508f30f8e65