Dec 17 17:16:51.448 INFO checking raphlinus/ghilbert against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 17:16:51.448 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 17:16:52.010 INFO [stdout] 474c492c81f1dad860eef21bd2833830a502deba4abe196409dfce7f08006fdb
Dec 17 17:16:52.014 INFO running `"docker" "start" "-a" "474c492c81f1dad860eef21bd2833830a502deba4abe196409dfce7f08006fdb"`
Dec 17 17:16:53.924 INFO [stderr]     Checking serde v1.0.11
Dec 17 17:16:53.924 INFO [stderr]     Checking union-find v0.3.1
Dec 17 17:17:01.232 INFO [stderr]     Checking serde_json v1.0.2
Dec 17 17:17:03.546 INFO [stderr]     Checking ghilbert v0.1.0 (/opt/crater/workdir)
Dec 17 17:17:04.176 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 17:17:04.176 INFO [stderr]    --> src/unify.rs:471:9
Dec 17 17:17:04.177 INFO [stderr]     |
Dec 17 17:17:04.177 INFO [stderr] 471 |         /// Maps node of bound var to set of term var nodes it can appear free in.
Dec 17 17:17:04.177 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:17:04.177 INFO [stderr]     |
Dec 17 17:17:04.177 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 17 17:17:04.177 INFO [stderr] 
Dec 17 17:17:04.238 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 17:17:04.238 INFO [stderr]    --> src/unify.rs:471:9
Dec 17 17:17:04.238 INFO [stderr]     |
Dec 17 17:17:04.238 INFO [stderr] 471 |         /// Maps node of bound var to set of term var nodes it can appear free in.
Dec 17 17:17:04.238 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:17:04.238 INFO [stderr]     |
Dec 17 17:17:04.238 INFO [stderr]     = note: #[warn(unused_doc_comments)] on by default
Dec 17 17:17:04.238 INFO [stderr] 
Dec 17 17:17:05.040 INFO [stderr] warning: unused variable: `writer`
Dec 17 17:17:05.041 INFO [stderr]    --> src/htmlout.rs:128:39
Dec 17 17:17:05.041 INFO [stderr]     |
Dec 17 17:17:05.041 INFO [stderr] 128 |     pub fn write<W: Write>(&mut self, writer: &mut W, parser: &Parser) -> io::Result<()> {
Dec 17 17:17:05.041 INFO [stderr]     |                                       ^^^^^^ help: consider using `_writer` instead
Dec 17 17:17:05.042 INFO [stderr]     |
Dec 17 17:17:05.042 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 17:17:05.042 INFO [stderr] 
Dec 17 17:17:05.043 INFO [stderr] warning: unused variable: `line`
Dec 17 17:17:05.044 INFO [stderr]    --> src/htmlout.rs:371:30
Dec 17 17:17:05.044 INFO [stderr]     |
Dec 17 17:17:05.044 INFO [stderr] 371 |     fn start_line(&mut self, line: &ParseNode) {
Dec 17 17:17:05.044 INFO [stderr]     |                              ^^^^ help: consider using `_line` instead
Dec 17 17:17:05.045 INFO [stderr] 
Dec 17 17:17:05.156 INFO [stderr] warning: variable does not need to be mutable
Dec 17 17:17:05.157 INFO [stderr]    --> src/lexer.rs:132:13
Dec 17 17:17:05.157 INFO [stderr]     |
Dec 17 17:17:05.157 INFO [stderr] 132 |         let mut node = self.root.traverse(s.chars());
Dec 17 17:17:05.158 INFO [stderr]     |             ----^^^^
Dec 17 17:17:05.158 INFO [stderr]     |             |
Dec 17 17:17:05.158 INFO [stderr]     |             help: remove this `mut`
Dec 17 17:17:05.158 INFO [stderr]     |
Dec 17 17:17:05.159 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 17:17:05.159 INFO [stderr] 
Dec 17 17:17:05.256 INFO [stderr] warning: unused variable: `writer`
Dec 17 17:17:05.257 INFO [stderr]    --> src/htmlout.rs:128:39
Dec 17 17:17:05.257 INFO [stderr]     |
Dec 17 17:17:05.257 INFO [stderr] 128 |     pub fn write<W: Write>(&mut self, writer: &mut W, parser: &Parser) -> io::Result<()> {
Dec 17 17:17:05.257 INFO [stderr]     |                                       ^^^^^^ help: consider using `_writer` instead
Dec 17 17:17:05.258 INFO [stderr]     |
Dec 17 17:17:05.258 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 17:17:05.258 INFO [stderr] 
Dec 17 17:17:05.258 INFO [stderr] warning: unused variable: `line`
Dec 17 17:17:05.258 INFO [stderr]    --> src/htmlout.rs:371:30
Dec 17 17:17:05.259 INFO [stderr]     |
Dec 17 17:17:05.259 INFO [stderr] 371 |     fn start_line(&mut self, line: &ParseNode) {
Dec 17 17:17:05.259 INFO [stderr]     |                              ^^^^ help: consider using `_line` instead
Dec 17 17:17:05.259 INFO [stderr] 
Dec 17 17:17:05.391 INFO [stderr] warning: variable does not need to be mutable
Dec 17 17:17:05.392 INFO [stderr]    --> src/lexer.rs:132:13
Dec 17 17:17:05.392 INFO [stderr]     |
Dec 17 17:17:05.392 INFO [stderr] 132 |         let mut node = self.root.traverse(s.chars());
Dec 17 17:17:05.393 INFO [stderr]     |             ----^^^^
Dec 17 17:17:05.393 INFO [stderr]     |             |
Dec 17 17:17:05.393 INFO [stderr]     |             help: remove this `mut`
Dec 17 17:17:05.394 INFO [stderr]     |
Dec 17 17:17:05.394 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 17:17:05.394 INFO [stderr] 
Dec 17 17:17:05.424 INFO [stderr] warning: method is never used: `cur_info`
Dec 17 17:17:05.424 INFO [stderr]    --> src/htmlout.rs:307:5
Dec 17 17:17:05.425 INFO [stderr]     |
Dec 17 17:17:05.425 INFO [stderr] 307 |     fn cur_info(&self) -> &ThmInfo {
Dec 17 17:17:05.425 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:17:05.425 INFO [stderr]     |
Dec 17 17:17:05.426 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 17:17:05.426 INFO [stderr] 
Dec 17 17:17:05.426 INFO [stderr] warning: method is never used: `get_end`
Dec 17 17:17:05.427 INFO [stderr]   --> src/parser.rs:44:5
Dec 17 17:17:05.427 INFO [stderr]    |
Dec 17 17:17:05.427 INFO [stderr] 44 |     pub fn get_end(&self) -> usize {
Dec 17 17:17:05.427 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:17:05.428 INFO [stderr] 
Dec 17 17:17:05.429 INFO [stderr] warning: field is never used: `session`
Dec 17 17:17:05.429 INFO [stderr]    --> src/session.rs:566:5
Dec 17 17:17:05.429 INFO [stderr]     |
Dec 17 17:17:05.429 INFO [stderr] 566 |     session: &'b Session<'a>,
Dec 17 17:17:05.430 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:17:05.430 INFO [stderr] 
Dec 17 17:17:05.722 INFO [stderr] warning: method is never used: `cur_info`
Dec 17 17:17:05.723 INFO [stderr]    --> src/htmlout.rs:307:5
Dec 17 17:17:05.723 INFO [stderr]     |
Dec 17 17:17:05.723 INFO [stderr] 307 |     fn cur_info(&self) -> &ThmInfo {
Dec 17 17:17:05.723 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:17:05.724 INFO [stderr]     |
Dec 17 17:17:05.724 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 17 17:17:05.724 INFO [stderr] 
Dec 17 17:17:05.724 INFO [stderr] warning: method is never used: `get_end`
Dec 17 17:17:05.724 INFO [stderr]   --> src/parser.rs:44:5
Dec 17 17:17:05.725 INFO [stderr]    |
Dec 17 17:17:05.725 INFO [stderr] 44 |     pub fn get_end(&self) -> usize {
Dec 17 17:17:05.725 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:17:05.725 INFO [stderr] 
Dec 17 17:17:05.725 INFO [stderr] warning: field is never used: `session`
Dec 17 17:17:05.726 INFO [stderr]    --> src/session.rs:566:5
Dec 17 17:17:05.726 INFO [stderr]     |
Dec 17 17:17:05.726 INFO [stderr] 566 |     session: &'b Session<'a>,
Dec 17 17:17:05.726 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 17:17:05.726 INFO [stderr] 
Dec 17 17:17:05.820 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.94s
Dec 17 17:17:07.372 INFO running `"docker" "inspect" "474c492c81f1dad860eef21bd2833830a502deba4abe196409dfce7f08006fdb"`
Dec 17 17:17:07.596 INFO running `"docker" "rm" "-f" "474c492c81f1dad860eef21bd2833830a502deba4abe196409dfce7f08006fdb"`
Dec 17 17:17:07.856 INFO [stdout] 474c492c81f1dad860eef21bd2833830a502deba4abe196409dfce7f08006fdb