Dec 17 17:16:46.151 INFO checking raphlinus/ghilbert against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 17:16:46.151 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/raphlinus/ghilbert:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 17:16:46.641 INFO [stdout] 618fee3f384fc9e0632cb68938d84cc924038dc5efe14da72f05500e02c88ffd
Dec 17 17:16:46.643 INFO running `"docker" "start" "-a" "618fee3f384fc9e0632cb68938d84cc924038dc5efe14da72f05500e02c88ffd"`
Dec 17 17:16:48.046 INFO [stderr]     Checking union-find v0.3.1
Dec 17 17:16:48.047 INFO [stderr]     Checking serde_json v1.0.2
Dec 17 17:16:50.288 INFO [stderr]     Checking ghilbert v0.1.0 (/opt/crater/workdir)
Dec 17 17:16:50.792 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 17:16:50.792 INFO [stderr]    --> src/unify.rs:471:9
Dec 17 17:16:50.792 INFO [stderr]     |
Dec 17 17:16:50.792 INFO [stderr] 471 |         /// Maps node of bound var to set of term var nodes it can appear free in.
Dec 17 17:16:50.792 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:16:50.792 INFO [stderr]     |
Dec 17 17:16:50.793 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 17 17:16:50.793 INFO [stderr] 
Dec 17 17:16:50.845 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 17:16:50.846 INFO [stderr]    --> src/unify.rs:471:9
Dec 17 17:16:50.846 INFO [stderr]     |
Dec 17 17:16:50.846 INFO [stderr] 471 |         /// Maps node of bound var to set of term var nodes it can appear free in.
Dec 17 17:16:50.846 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:16:50.846 INFO [stderr]     |
Dec 17 17:16:50.846 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 17 17:16:50.846 INFO [stderr] 
Dec 17 17:16:51.448 INFO [stderr] warning: unused variable: `writer`
Dec 17 17:16:51.448 INFO [stderr]    --> src/htmlout.rs:128:39
Dec 17 17:16:51.448 INFO [stderr]     |
Dec 17 17:16:51.448 INFO [stderr] 128 |     pub fn write<W: Write>(&mut self, writer: &mut W, parser: &Parser) -> io::Result<()> {
Dec 17 17:16:51.448 INFO [stderr]     |                                       ^^^^^^ help: consider using `_writer` instead
Dec 17 17:16:51.448 INFO [stderr]     |
Dec 17 17:16:51.449 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 17:16:51.449 INFO [stderr] 
Dec 17 17:16:51.450 INFO [stderr] warning: unused variable: `line`
Dec 17 17:16:51.450 INFO [stderr]    --> src/htmlout.rs:371:30
Dec 17 17:16:51.450 INFO [stderr]     |
Dec 17 17:16:51.450 INFO [stderr] 371 |     fn start_line(&mut self, line: &ParseNode) {
Dec 17 17:16:51.450 INFO [stderr]     |                              ^^^^ help: consider using `_line` instead
Dec 17 17:16:51.450 INFO [stderr] 
Dec 17 17:16:51.511 INFO [stderr] warning: unused variable: `writer`
Dec 17 17:16:51.511 INFO [stderr]    --> src/htmlout.rs:128:39
Dec 17 17:16:51.511 INFO [stderr]     |
Dec 17 17:16:51.511 INFO [stderr] 128 |     pub fn write<W: Write>(&mut self, writer: &mut W, parser: &Parser) -> io::Result<()> {
Dec 17 17:16:51.511 INFO [stderr]     |                                       ^^^^^^ help: consider using `_writer` instead
Dec 17 17:16:51.511 INFO [stderr]     |
Dec 17 17:16:51.511 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 17:16:51.511 INFO [stderr] 
Dec 17 17:16:51.511 INFO [stderr] warning: unused variable: `line`
Dec 17 17:16:51.511 INFO [stderr]    --> src/htmlout.rs:371:30
Dec 17 17:16:51.511 INFO [stderr]     |
Dec 17 17:16:51.511 INFO [stderr] 371 |     fn start_line(&mut self, line: &ParseNode) {
Dec 17 17:16:51.511 INFO [stderr]     |                              ^^^^ help: consider using `_line` instead
Dec 17 17:16:51.511 INFO [stderr] 
Dec 17 17:16:51.535 INFO [stderr] warning: variable does not need to be mutable
Dec 17 17:16:51.535 INFO [stderr]    --> src/lexer.rs:132:13
Dec 17 17:16:51.535 INFO [stderr]     |
Dec 17 17:16:51.535 INFO [stderr] 132 |         let mut node = self.root.traverse(s.chars());
Dec 17 17:16:51.535 INFO [stderr]     |             ----^^^^
Dec 17 17:16:51.535 INFO [stderr]     |             |
Dec 17 17:16:51.535 INFO [stderr]     |             help: remove this `mut`
Dec 17 17:16:51.535 INFO [stderr]     |
Dec 17 17:16:51.535 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 17:16:51.535 INFO [stderr] 
Dec 17 17:16:51.581 INFO [stderr] warning: variable does not need to be mutable
Dec 17 17:16:51.581 INFO [stderr]    --> src/lexer.rs:132:13
Dec 17 17:16:51.581 INFO [stderr]     |
Dec 17 17:16:51.581 INFO [stderr] 132 |         let mut node = self.root.traverse(s.chars());
Dec 17 17:16:51.581 INFO [stderr]     |             ----^^^^
Dec 17 17:16:51.581 INFO [stderr]     |             |
Dec 17 17:16:51.581 INFO [stderr]     |             help: remove this `mut`
Dec 17 17:16:51.582 INFO [stderr]     |
Dec 17 17:16:51.582 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 17:16:51.582 INFO [stderr] 
Dec 17 17:16:51.720 INFO [stderr] warning: method is never used: `cur_info`
Dec 17 17:16:51.720 INFO [stderr]    --> src/htmlout.rs:307:5
Dec 17 17:16:51.720 INFO [stderr]     |
Dec 17 17:16:51.720 INFO [stderr] 307 |     fn cur_info(&self) -> &ThmInfo {
Dec 17 17:16:51.720 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:16:51.720 INFO [stderr]     |
Dec 17 17:16:51.720 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 17:16:51.720 INFO [stderr] 
Dec 17 17:16:51.720 INFO [stderr] warning: method is never used: `get_end`
Dec 17 17:16:51.720 INFO [stderr]   --> src/parser.rs:44:5
Dec 17 17:16:51.720 INFO [stderr]    |
Dec 17 17:16:51.720 INFO [stderr] 44 |     pub fn get_end(&self) -> usize {
Dec 17 17:16:51.720 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:16:51.720 INFO [stderr] 
Dec 17 17:16:51.721 INFO [stderr] warning: field is never used: `session`
Dec 17 17:16:51.721 INFO [stderr]    --> src/session.rs:566:5
Dec 17 17:16:51.721 INFO [stderr]     |
Dec 17 17:16:51.721 INFO [stderr] 566 |     session: &'b Session<'a>,
Dec 17 17:16:51.721 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:16:51.721 INFO [stderr] 
Dec 17 17:16:51.824 INFO [stderr] warning: method is never used: `cur_info`
Dec 17 17:16:51.824 INFO [stderr]    --> src/htmlout.rs:307:5
Dec 17 17:16:51.824 INFO [stderr]     |
Dec 17 17:16:51.825 INFO [stderr] 307 |     fn cur_info(&self) -> &ThmInfo {
Dec 17 17:16:51.825 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:16:51.825 INFO [stderr]     |
Dec 17 17:16:51.826 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 17:16:51.826 INFO [stderr] 
Dec 17 17:16:51.826 INFO [stderr] warning: method is never used: `get_end`
Dec 17 17:16:51.827 INFO [stderr]   --> src/parser.rs:44:5
Dec 17 17:16:51.827 INFO [stderr]    |
Dec 17 17:16:51.827 INFO [stderr] 44 |     pub fn get_end(&self) -> usize {
Dec 17 17:16:51.827 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:16:51.828 INFO [stderr] 
Dec 17 17:16:51.829 INFO [stderr] warning: field is never used: `session`
Dec 17 17:16:51.829 INFO [stderr]    --> src/session.rs:566:5
Dec 17 17:16:51.829 INFO [stderr]     |
Dec 17 17:16:51.830 INFO [stderr] 566 |     session: &'b Session<'a>,
Dec 17 17:16:51.830 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:16:51.830 INFO [stderr] 
Dec 17 17:16:51.892 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.89s
Dec 17 17:16:52.688 INFO running `"docker" "inspect" "618fee3f384fc9e0632cb68938d84cc924038dc5efe14da72f05500e02c88ffd"`
Dec 17 17:16:53.054 INFO running `"docker" "rm" "-f" "618fee3f384fc9e0632cb68938d84cc924038dc5efe14da72f05500e02c88ffd"`
Dec 17 17:16:53.368 INFO [stdout] 618fee3f384fc9e0632cb68938d84cc924038dc5efe14da72f05500e02c88ffd