Dec 19 22:23:36.825 INFO checking PhilipDaniels/word_chains against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 22:23:36.825 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/PhilipDaniels/word_chains:/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 22:23:37.197 INFO [stdout] 909c7ae846d254183a933e02a4024059df42073f3f463206fff4f504e787236a
Dec 19 22:23:37.203 INFO running `"docker" "start" "-a" "909c7ae846d254183a933e02a4024059df42073f3f463206fff4f504e787236a"`
Dec 19 22:23:38.765 INFO [stderr]    Compiling structopt-derive v0.2.5
Dec 19 22:23:41.760 INFO [stderr]     Checking structopt v0.2.5
Dec 19 22:23:42.249 INFO [stderr]     Checking word_chains v0.1.0 (/opt/crater/workdir)
Dec 19 22:23:43.156 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 22:23:43.156 INFO [stderr]  --> src/main.rs:1:1
Dec 19 22:23:43.156 INFO [stderr]   |
Dec 19 22:23:43.156 INFO [stderr] 1 | #[macro_use] extern crate structopt;
Dec 19 22:23:43.156 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 22:23:43.180 INFO [stderr]   |
Dec 19 22:23:43.180 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 22:23:43.180 INFO [stderr] 
Dec 19 22:23:43.208 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 22:23:43.208 INFO [stderr]  --> src/main.rs:1:1
Dec 19 22:23:43.208 INFO [stderr]   |
Dec 19 22:23:43.208 INFO [stderr] 1 | #[macro_use] extern crate structopt;
Dec 19 22:23:43.208 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 22:23:43.220 INFO [stderr]   |
Dec 19 22:23:43.220 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 22:23:43.220 INFO [stderr] 
Dec 19 22:23:43.368 INFO [stderr] warning: unused variable: `g`
Dec 19 22:23:43.368 INFO [stderr]   --> src/letter_differences.rs:36:13
Dec 19 22:23:43.368 INFO [stderr]    |
Dec 19 22:23:43.368 INFO [stderr] 36 |         let g = make_graph(&rwords_for_table);
Dec 19 22:23:43.368 INFO [stderr]    |             ^ help: consider using `_g` instead
Dec 19 22:23:43.368 INFO [stderr]    |
Dec 19 22:23:43.368 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 22:23:43.368 INFO [stderr] 
Dec 19 22:23:43.468 INFO [stderr] warning: field is never used: `word`
Dec 19 22:23:43.468 INFO [stderr]  --> src/graph.rs:4:5
Dec 19 22:23:43.468 INFO [stderr]   |
Dec 19 22:23:43.468 INFO [stderr] 4 |     word: &'word String,
Dec 19 22:23:43.468 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 22:23:43.468 INFO [stderr]   |
Dec 19 22:23:43.468 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 22:23:43.468 INFO [stderr] 
Dec 19 22:23:43.468 INFO [stderr] warning: method is never used: `word`
Dec 19 22:23:43.468 INFO [stderr]   --> src/graph.rs:18:5
Dec 19 22:23:43.468 INFO [stderr]    |
Dec 19 22:23:43.468 INFO [stderr] 18 |     fn word(&self) -> &String {
Dec 19 22:23:43.468 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:23:43.468 INFO [stderr] 
Dec 19 22:23:43.508 INFO [stderr] warning: unused variable: `g`
Dec 19 22:23:43.508 INFO [stderr]   --> src/letter_differences.rs:36:13
Dec 19 22:23:43.508 INFO [stderr]    |
Dec 19 22:23:43.508 INFO [stderr] 36 |         let g = make_graph(&rwords_for_table);
Dec 19 22:23:43.508 INFO [stderr]    |             ^ help: consider using `_g` instead
Dec 19 22:23:43.508 INFO [stderr]    |
Dec 19 22:23:43.508 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 22:23:43.508 INFO [stderr] 
Dec 19 22:23:43.628 INFO [stderr] warning: field is never used: `word`
Dec 19 22:23:43.632 INFO [stderr]  --> src/graph.rs:4:5
Dec 19 22:23:43.632 INFO [stderr]   |
Dec 19 22:23:43.632 INFO [stderr] 4 |     word: &'word String,
Dec 19 22:23:43.632 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 22:23:43.632 INFO [stderr]   |
Dec 19 22:23:43.632 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 22:23:43.632 INFO [stderr] 
Dec 19 22:23:43.632 INFO [stderr] warning: method is never used: `word`
Dec 19 22:23:43.632 INFO [stderr]   --> src/graph.rs:18:5
Dec 19 22:23:43.632 INFO [stderr]    |
Dec 19 22:23:43.632 INFO [stderr] 18 |     fn word(&self) -> &String {
Dec 19 22:23:43.632 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:23:43.632 INFO [stderr] 
Dec 19 22:23:43.696 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.05s
Dec 19 22:23:44.368 INFO running `"docker" "inspect" "909c7ae846d254183a933e02a4024059df42073f3f463206fff4f504e787236a"`
Dec 19 22:23:44.694 INFO running `"docker" "rm" "-f" "909c7ae846d254183a933e02a4024059df42073f3f463206fff4f504e787236a"`
Dec 19 22:23:45.200 INFO [stdout] 909c7ae846d254183a933e02a4024059df42073f3f463206fff4f504e787236a