Dec 19 10:25:01.296 INFO checking raphlinus/ghilbert against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 10:25:01.296 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 10:25:01.902 INFO [stdout] 451988ce1588c70c5b04fc2ca91722e611343119f359fda9a1784fd244787286
Dec 19 10:25:01.904 INFO running `"docker" "start" "-a" "451988ce1588c70c5b04fc2ca91722e611343119f359fda9a1784fd244787286"`
Dec 19 10:25:03.906 INFO [stderr]     Checking itoa v0.3.3
Dec 19 10:25:03.906 INFO [stderr]     Checking union-find v0.3.1
Dec 19 10:25:04.525 INFO [stderr]     Checking serde_json v1.0.2
Dec 19 10:25:06.888 INFO [stderr]     Checking ghilbert v0.1.0 (/opt/crater/workdir)
Dec 19 10:25:07.176 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 10:25:07.176 INFO [stderr]    --> src/unify.rs:471:9
Dec 19 10:25:07.176 INFO [stderr]     |
Dec 19 10:25:07.176 INFO [stderr] 471 |         /// Maps node of bound var to set of term var nodes it can appear free in.
Dec 19 10:25:07.176 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 10:25:07.176 INFO [stderr]     |
Dec 19 10:25:07.176 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 19 10:25:07.176 INFO [stderr] 
Dec 19 10:25:07.176 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 10:25:07.176 INFO [stderr]    --> src/unify.rs:471:9
Dec 19 10:25:07.176 INFO [stderr]     |
Dec 19 10:25:07.176 INFO [stderr] 471 |         /// Maps node of bound var to set of term var nodes it can appear free in.
Dec 19 10:25:07.176 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 10:25:07.176 INFO [stderr]     |
Dec 19 10:25:07.176 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 19 10:25:07.176 INFO [stderr] 
Dec 19 10:25:07.768 INFO [stderr] warning: unused variable: `writer`
Dec 19 10:25:07.768 INFO [stderr]    --> src/htmlout.rs:128:39
Dec 19 10:25:07.768 INFO [stderr]     |
Dec 19 10:25:07.768 INFO [stderr] 128 |     pub fn write<W: Write>(&mut self, writer: &mut W, parser: &Parser) -> io::Result<()> {
Dec 19 10:25:07.768 INFO [stderr]     |                                       ^^^^^^ help: consider using `_writer` instead
Dec 19 10:25:07.768 INFO [stderr]     |
Dec 19 10:25:07.768 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 10:25:07.768 INFO [stderr] 
Dec 19 10:25:07.768 INFO [stderr] warning: unused variable: `line`
Dec 19 10:25:07.768 INFO [stderr]    --> src/htmlout.rs:371:30
Dec 19 10:25:07.768 INFO [stderr]     |
Dec 19 10:25:07.768 INFO [stderr] 371 |     fn start_line(&mut self, line: &ParseNode) {
Dec 19 10:25:07.768 INFO [stderr]     |                              ^^^^ help: consider using `_line` instead
Dec 19 10:25:07.768 INFO [stderr] 
Dec 19 10:25:07.834 INFO [stderr] warning: variable does not need to be mutable
Dec 19 10:25:07.834 INFO [stderr]    --> src/lexer.rs:132:13
Dec 19 10:25:07.834 INFO [stderr]     |
Dec 19 10:25:07.834 INFO [stderr] 132 |         let mut node = self.root.traverse(s.chars());
Dec 19 10:25:07.834 INFO [stderr]     |             ----^^^^
Dec 19 10:25:07.834 INFO [stderr]     |             |
Dec 19 10:25:07.834 INFO [stderr]     |             help: remove this `mut`
Dec 19 10:25:07.834 INFO [stderr]     |
Dec 19 10:25:07.834 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 10:25:07.834 INFO [stderr] 
Dec 19 10:25:07.928 INFO [stderr] warning: unused variable: `writer`
Dec 19 10:25:07.928 INFO [stderr]    --> src/htmlout.rs:128:39
Dec 19 10:25:07.928 INFO [stderr]     |
Dec 19 10:25:07.928 INFO [stderr] 128 |     pub fn write<W: Write>(&mut self, writer: &mut W, parser: &Parser) -> io::Result<()> {
Dec 19 10:25:07.928 INFO [stderr]     |                                       ^^^^^^ help: consider using `_writer` instead
Dec 19 10:25:07.928 INFO [stderr]     |
Dec 19 10:25:07.928 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 10:25:07.928 INFO [stderr] 
Dec 19 10:25:07.936 INFO [stderr] warning: unused variable: `line`
Dec 19 10:25:07.936 INFO [stderr]    --> src/htmlout.rs:371:30
Dec 19 10:25:07.936 INFO [stderr]     |
Dec 19 10:25:07.936 INFO [stderr] 371 |     fn start_line(&mut self, line: &ParseNode) {
Dec 19 10:25:07.936 INFO [stderr]     |                              ^^^^ help: consider using `_line` instead
Dec 19 10:25:07.936 INFO [stderr] 
Dec 19 10:25:08.004 INFO [stderr] warning: variable does not need to be mutable
Dec 19 10:25:08.004 INFO [stderr]    --> src/lexer.rs:132:13
Dec 19 10:25:08.004 INFO [stderr]     |
Dec 19 10:25:08.004 INFO [stderr] 132 |         let mut node = self.root.traverse(s.chars());
Dec 19 10:25:08.004 INFO [stderr]     |             ----^^^^
Dec 19 10:25:08.004 INFO [stderr]     |             |
Dec 19 10:25:08.004 INFO [stderr]     |             help: remove this `mut`
Dec 19 10:25:08.004 INFO [stderr]     |
Dec 19 10:25:08.004 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 10:25:08.004 INFO [stderr] 
Dec 19 10:25:08.032 INFO [stderr] warning: method is never used: `cur_info`
Dec 19 10:25:08.032 INFO [stderr]    --> src/htmlout.rs:307:5
Dec 19 10:25:08.032 INFO [stderr]     |
Dec 19 10:25:08.032 INFO [stderr] 307 |     fn cur_info(&self) -> &ThmInfo {
Dec 19 10:25:08.032 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 10:25:08.032 INFO [stderr]     |
Dec 19 10:25:08.032 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 10:25:08.032 INFO [stderr] 
Dec 19 10:25:08.032 INFO [stderr] warning: method is never used: `get_end`
Dec 19 10:25:08.032 INFO [stderr]   --> src/parser.rs:44:5
Dec 19 10:25:08.032 INFO [stderr]    |
Dec 19 10:25:08.032 INFO [stderr] 44 |     pub fn get_end(&self) -> usize {
Dec 19 10:25:08.032 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 10:25:08.032 INFO [stderr] 
Dec 19 10:25:08.032 INFO [stderr] warning: field is never used: `session`
Dec 19 10:25:08.032 INFO [stderr]    --> src/session.rs:566:5
Dec 19 10:25:08.032 INFO [stderr]     |
Dec 19 10:25:08.032 INFO [stderr] 566 |     session: &'b Session<'a>,
Dec 19 10:25:08.032 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 10:25:08.032 INFO [stderr] 
Dec 19 10:25:08.208 INFO [stderr] warning: method is never used: `cur_info`
Dec 19 10:25:08.208 INFO [stderr]    --> src/htmlout.rs:307:5
Dec 19 10:25:08.208 INFO [stderr]     |
Dec 19 10:25:08.208 INFO [stderr] 307 |     fn cur_info(&self) -> &ThmInfo {
Dec 19 10:25:08.208 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 10:25:08.208 INFO [stderr]     |
Dec 19 10:25:08.208 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 10:25:08.208 INFO [stderr] 
Dec 19 10:25:08.208 INFO [stderr] warning: method is never used: `get_end`
Dec 19 10:25:08.208 INFO [stderr]   --> src/parser.rs:44:5
Dec 19 10:25:08.208 INFO [stderr]    |
Dec 19 10:25:08.208 INFO [stderr] 44 |     pub fn get_end(&self) -> usize {
Dec 19 10:25:08.208 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 10:25:08.208 INFO [stderr] 
Dec 19 10:25:08.208 INFO [stderr] warning: field is never used: `session`
Dec 19 10:25:08.208 INFO [stderr]    --> src/session.rs:566:5
Dec 19 10:25:08.208 INFO [stderr]     |
Dec 19 10:25:08.208 INFO [stderr] 566 |     session: &'b Session<'a>,
Dec 19 10:25:08.208 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 10:25:08.208 INFO [stderr] 
Dec 19 10:25:08.252 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.39s
Dec 19 10:25:08.758 INFO running `"docker" "inspect" "451988ce1588c70c5b04fc2ca91722e611343119f359fda9a1784fd244787286"`
Dec 19 10:25:08.988 INFO running `"docker" "rm" "-f" "451988ce1588c70c5b04fc2ca91722e611343119f359fda9a1784fd244787286"`
Dec 19 10:25:09.117 INFO [stdout] 451988ce1588c70c5b04fc2ca91722e611343119f359fda9a1784fd244787286