Dec 19 21:07:41.613 INFO checking abhijeetbhagat/krum against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 21:07:41.613 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/abhijeetbhagat/krum:/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 21:07:42.232 INFO [stdout] 537e81f629f92b4a0a4331b342abac26feecb39b8506e6424d11b02f7e66fc1c
Dec 19 21:07:42.236 INFO running `"docker" "start" "-a" "537e81f629f92b4a0a4331b342abac26feecb39b8506e6424d11b02f7e66fc1c"`
Dec 19 21:07:43.744 INFO [stderr]     Checking krum v0.1.0 (/opt/crater/workdir)
Dec 19 21:07:44.252 INFO [stderr] warning: unreachable expression
Dec 19 21:07:44.252 INFO [stderr]   --> src/parser.rs:44:9
Dec 19 21:07:44.252 INFO [stderr]    |
Dec 19 21:07:44.252 INFO [stderr] 44 |         return exp
Dec 19 21:07:44.252 INFO [stderr]    |         ^^^^^^^^^^
Dec 19 21:07:44.252 INFO [stderr]    |
Dec 19 21:07:44.252 INFO [stderr]    = note: #[warn(unreachable_code)] on by default
Dec 19 21:07:44.252 INFO [stderr] 
Dec 19 21:07:44.272 INFO [stderr] warning: unused variable: `exp`
Dec 19 21:07:44.272 INFO [stderr]   --> src/parser.rs:29:17
Dec 19 21:07:44.272 INFO [stderr]    |
Dec 19 21:07:44.272 INFO [stderr] 29 |         let mut exp = match self.get_cur_tok() {
Dec 19 21:07:44.272 INFO [stderr]    |                 ^^^ help: consider using `_exp` instead
Dec 19 21:07:44.272 INFO [stderr]    |
Dec 19 21:07:44.272 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 21:07:44.272 INFO [stderr] 
Dec 19 21:07:44.320 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:07:44.320 INFO [stderr]   --> src/parser.rs:29:13
Dec 19 21:07:44.320 INFO [stderr]    |
Dec 19 21:07:44.320 INFO [stderr] 29 |         let mut exp = match self.get_cur_tok() {
Dec 19 21:07:44.320 INFO [stderr]    |             ----^^^
Dec 19 21:07:44.320 INFO [stderr]    |             |
Dec 19 21:07:44.320 INFO [stderr]    |             help: remove this `mut`
Dec 19 21:07:44.320 INFO [stderr]    |
Dec 19 21:07:44.320 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 21:07:44.320 INFO [stderr] 
Dec 19 21:07:44.320 INFO [stderr] warning: field is never used: `cur_tok_line`
Dec 19 21:07:44.320 INFO [stderr]  --> src/lexer.rs:5:5
Dec 19 21:07:44.320 INFO [stderr]   |
Dec 19 21:07:44.320 INFO [stderr] 5 |     cur_tok_line : usize,
Dec 19 21:07:44.320 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 21:07:44.320 INFO [stderr]   |
Dec 19 21:07:44.320 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 21:07:44.320 INFO [stderr] 
Dec 19 21:07:44.321 INFO [stderr] warning: field is never used: `cur_tok_col`
Dec 19 21:07:44.321 INFO [stderr]  --> src/lexer.rs:6:5
Dec 19 21:07:44.321 INFO [stderr]   |
Dec 19 21:07:44.321 INFO [stderr] 6 |     cur_tok_col : usize,
Dec 19 21:07:44.321 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 21:07:44.321 INFO [stderr] 
Dec 19 21:07:44.321 INFO [stderr] warning: field is never used: `src_len`
Dec 19 21:07:44.321 INFO [stderr]  --> src/lexer.rs:8:5
Dec 19 21:07:44.321 INFO [stderr]   |
Dec 19 21:07:44.321 INFO [stderr] 8 |     src_len : usize,
Dec 19 21:07:44.321 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 21:07:44.321 INFO [stderr] 
Dec 19 21:07:44.321 INFO [stderr] warning: field is never used: `expression`
Dec 19 21:07:44.321 INFO [stderr]   --> src/ast.rs:41:5
Dec 19 21:07:44.321 INFO [stderr]    |
Dec 19 21:07:44.321 INFO [stderr] 41 |     expression : Expression
Dec 19 21:07:44.321 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:07:44.321 INFO [stderr] 
Dec 19 21:07:44.321 INFO [stderr] warning: field is never used: `cur_tok`
Dec 19 21:07:44.321 INFO [stderr]  --> src/parser.rs:7:5
Dec 19 21:07:44.321 INFO [stderr]   |
Dec 19 21:07:44.321 INFO [stderr] 7 |     cur_tok : Token,
Dec 19 21:07:44.321 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 21:07:44.321 INFO [stderr] 
Dec 19 21:07:44.321 INFO [stderr] warning: method is never used: `parse_program`
Dec 19 21:07:44.321 INFO [stderr]   --> src/parser.rs:47:5
Dec 19 21:07:44.321 INFO [stderr]    |
Dec 19 21:07:44.321 INFO [stderr] 47 |     fn parse_program(&mut self) {
Dec 19 21:07:44.321 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:07:44.321 INFO [stderr] 
Dec 19 21:07:44.321 INFO [stderr] warning: the feature `match_default_bindings` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 21:07:44.321 INFO [stderr]  --> src/main.rs:1:12
Dec 19 21:07:44.321 INFO [stderr]   |
Dec 19 21:07:44.321 INFO [stderr] 1 | #![feature(match_default_bindings)]
Dec 19 21:07:44.321 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:07:44.321 INFO [stderr]   |
Dec 19 21:07:44.321 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 21:07:44.321 INFO [stderr] 
Dec 19 21:07:44.522 INFO [stderr] warning: unreachable expression
Dec 19 21:07:44.523 INFO [stderr]   --> src/parser.rs:44:9
Dec 19 21:07:44.523 INFO [stderr]    |
Dec 19 21:07:44.523 INFO [stderr] 44 |         return exp
Dec 19 21:07:44.523 INFO [stderr]    |         ^^^^^^^^^^
Dec 19 21:07:44.523 INFO [stderr]    |
Dec 19 21:07:44.523 INFO [stderr]    = note: #[warn(unreachable_code)] on by default
Dec 19 21:07:44.523 INFO [stderr] 
Dec 19 21:07:44.545 INFO [stderr] warning: unused variable: `exp`
Dec 19 21:07:44.552 INFO [stderr]   --> src/parser.rs:29:17
Dec 19 21:07:44.552 INFO [stderr]    |
Dec 19 21:07:44.552 INFO [stderr] 29 |         let mut exp = match self.get_cur_tok() {
Dec 19 21:07:44.552 INFO [stderr]    |                 ^^^ help: consider using `_exp` instead
Dec 19 21:07:44.552 INFO [stderr]    |
Dec 19 21:07:44.552 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 21:07:44.552 INFO [stderr] 
Dec 19 21:07:44.600 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:07:44.600 INFO [stderr]   --> src/parser.rs:29:13
Dec 19 21:07:44.600 INFO [stderr]    |
Dec 19 21:07:44.600 INFO [stderr] 29 |         let mut exp = match self.get_cur_tok() {
Dec 19 21:07:44.600 INFO [stderr]    |             ----^^^
Dec 19 21:07:44.600 INFO [stderr]    |             |
Dec 19 21:07:44.600 INFO [stderr]    |             help: remove this `mut`
Dec 19 21:07:44.600 INFO [stderr]    |
Dec 19 21:07:44.600 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 21:07:44.600 INFO [stderr] 
Dec 19 21:07:44.600 INFO [stderr] warning: field is never used: `cur_tok_line`
Dec 19 21:07:44.600 INFO [stderr]  --> src/lexer.rs:5:5
Dec 19 21:07:44.600 INFO [stderr]   |
Dec 19 21:07:44.600 INFO [stderr] 5 |     cur_tok_line : usize,
Dec 19 21:07:44.600 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 21:07:44.600 INFO [stderr]   |
Dec 19 21:07:44.601 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 21:07:44.601 INFO [stderr] 
Dec 19 21:07:44.601 INFO [stderr] warning: field is never used: `cur_tok_col`
Dec 19 21:07:44.601 INFO [stderr]  --> src/lexer.rs:6:5
Dec 19 21:07:44.601 INFO [stderr]   |
Dec 19 21:07:44.601 INFO [stderr] 6 |     cur_tok_col : usize,
Dec 19 21:07:44.601 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 21:07:44.601 INFO [stderr] 
Dec 19 21:07:44.601 INFO [stderr] warning: field is never used: `src_len`
Dec 19 21:07:44.601 INFO [stderr]  --> src/lexer.rs:8:5
Dec 19 21:07:44.601 INFO [stderr]   |
Dec 19 21:07:44.601 INFO [stderr] 8 |     src_len : usize,
Dec 19 21:07:44.601 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 21:07:44.601 INFO [stderr] 
Dec 19 21:07:44.601 INFO [stderr] warning: field is never used: `expression`
Dec 19 21:07:44.601 INFO [stderr]   --> src/ast.rs:41:5
Dec 19 21:07:44.601 INFO [stderr]    |
Dec 19 21:07:44.601 INFO [stderr] 41 |     expression : Expression
Dec 19 21:07:44.601 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:07:44.601 INFO [stderr] 
Dec 19 21:07:44.601 INFO [stderr] warning: field is never used: `cur_tok`
Dec 19 21:07:44.601 INFO [stderr]  --> src/parser.rs:7:5
Dec 19 21:07:44.601 INFO [stderr]   |
Dec 19 21:07:44.601 INFO [stderr] 7 |     cur_tok : Token,
Dec 19 21:07:44.601 INFO [stderr]   |     ^^^^^^^^^^^^^^^
Dec 19 21:07:44.601 INFO [stderr] 
Dec 19 21:07:44.601 INFO [stderr] warning: method is never used: `parse_program`
Dec 19 21:07:44.601 INFO [stderr]   --> src/parser.rs:47:5
Dec 19 21:07:44.601 INFO [stderr]    |
Dec 19 21:07:44.601 INFO [stderr] 47 |     fn parse_program(&mut self) {
Dec 19 21:07:44.601 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:07:44.601 INFO [stderr] 
Dec 19 21:07:44.601 INFO [stderr] warning: the feature `match_default_bindings` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 21:07:44.601 INFO [stderr]  --> src/main.rs:1:12
Dec 19 21:07:44.601 INFO [stderr]   |
Dec 19 21:07:44.601 INFO [stderr] 1 | #![feature(match_default_bindings)]
Dec 19 21:07:44.601 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:07:44.601 INFO [stderr]   |
Dec 19 21:07:44.601 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 21:07:44.601 INFO [stderr] 
Dec 19 21:07:44.652 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
Dec 19 21:07:45.574 INFO running `"docker" "inspect" "537e81f629f92b4a0a4331b342abac26feecb39b8506e6424d11b02f7e66fc1c"`
Dec 19 21:07:45.780 INFO running `"docker" "rm" "-f" "537e81f629f92b4a0a4331b342abac26feecb39b8506e6424d11b02f7e66fc1c"`
Dec 19 21:07:46.132 INFO [stdout] 537e81f629f92b4a0a4331b342abac26feecb39b8506e6424d11b02f7e66fc1c