Dec 18 13:55:55.270 INFO checking mon-0.2.2 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 13:55:55.271 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/mon/0.2.2:/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 18 13:55:55.556 INFO [stdout] 58e7af37d2bbb973f9b5ee2a800a733291620765f837b100acae1a8214177b16
Dec 18 13:55:55.560 INFO running `"docker" "start" "-a" "58e7af37d2bbb973f9b5ee2a800a733291620765f837b100acae1a8214177b16"`
Dec 18 13:55:56.753 INFO [stderr]     Checking mon v0.2.2 (/opt/crater/workdir)
Dec 18 13:55:57.716 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 18 13:55:57.716 INFO [stderr]    --> src/db/mod.rs:260:40
Dec 18 13:55:57.716 INFO [stderr]     |
Dec 18 13:55:57.716 INFO [stderr] 260 |             doc.insert("writeConcern", (concern.to_bson()));
Dec 18 13:55:57.716 INFO [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 13:55:57.716 INFO [stderr]     |
Dec 18 13:55:57.716 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 18 13:55:57.716 INFO [stderr] 
Dec 18 13:55:57.771 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 18 13:55:57.771 INFO [stderr]    --> src/db/mod.rs:260:40
Dec 18 13:55:57.771 INFO [stderr]     |
Dec 18 13:55:57.771 INFO [stderr] 260 |             doc.insert("writeConcern", (concern.to_bson()));
Dec 18 13:55:57.771 INFO [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 18 13:55:57.771 INFO [stderr]     |
Dec 18 13:55:57.771 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 18 13:55:57.771 INFO [stderr] 
Dec 18 13:55:57.844 INFO [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
Dec 18 13:55:57.844 INFO [stderr]  --> src/common.rs:2:5
Dec 18 13:55:57.844 INFO [stderr]   |
Dec 18 13:55:57.844 INFO [stderr] 2 | use std::ascii::AsciiExt;
Dec 18 13:55:57.844 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 18 13:55:57.844 INFO [stderr]   |
Dec 18 13:55:57.844 INFO [stderr]   = note: #[warn(deprecated)] on by default
Dec 18 13:55:57.844 INFO [stderr] 
Dec 18 13:55:57.844 INFO [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
Dec 18 13:55:57.844 INFO [stderr]  --> src/connstring.rs:4:5
Dec 18 13:55:57.844 INFO [stderr]   |
Dec 18 13:55:57.844 INFO [stderr] 4 | use std::ascii::AsciiExt;
Dec 18 13:55:57.844 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 18 13:55:57.844 INFO [stderr] 
Dec 18 13:55:57.909 INFO [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
Dec 18 13:55:57.909 INFO [stderr]  --> src/common.rs:2:5
Dec 18 13:55:57.909 INFO [stderr]   |
Dec 18 13:55:57.909 INFO [stderr] 2 | use std::ascii::AsciiExt;
Dec 18 13:55:57.909 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 18 13:55:57.909 INFO [stderr]   |
Dec 18 13:55:57.909 INFO [stderr]   = note: #[warn(deprecated)] on by default
Dec 18 13:55:57.909 INFO [stderr] 
Dec 18 13:55:57.909 INFO [stderr] warning: use of deprecated item 'std::ascii::AsciiExt': use inherent methods instead
Dec 18 13:55:57.909 INFO [stderr]  --> src/connstring.rs:4:5
Dec 18 13:55:57.909 INFO [stderr]   |
Dec 18 13:55:57.909 INFO [stderr] 4 | use std::ascii::AsciiExt;
Dec 18 13:55:57.909 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 18 13:55:57.909 INFO [stderr] 
Dec 18 13:55:59.548 INFO [stderr] warning: unused import: `std::ascii::AsciiExt`
Dec 18 13:55:59.548 INFO [stderr]  --> src/common.rs:2:5
Dec 18 13:55:59.548 INFO [stderr]   |
Dec 18 13:55:59.548 INFO [stderr] 2 | use std::ascii::AsciiExt;
Dec 18 13:55:59.548 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 18 13:55:59.548 INFO [stderr]   |
Dec 18 13:55:59.548 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 13:55:59.548 INFO [stderr] 
Dec 18 13:55:59.548 INFO [stderr] warning: unused import: `std::ascii::AsciiExt`
Dec 18 13:55:59.548 INFO [stderr]  --> src/connstring.rs:4:5
Dec 18 13:55:59.548 INFO [stderr]   |
Dec 18 13:55:59.548 INFO [stderr] 4 | use std::ascii::AsciiExt;
Dec 18 13:55:59.548 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 18 13:55:59.548 INFO [stderr] 
Dec 18 13:55:59.612 INFO [stderr] warning: unused import: `std::ascii::AsciiExt`
Dec 18 13:55:59.612 INFO [stderr]  --> src/common.rs:2:5
Dec 18 13:55:59.612 INFO [stderr]   |
Dec 18 13:55:59.612 INFO [stderr] 2 | use std::ascii::AsciiExt;
Dec 18 13:55:59.612 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 18 13:55:59.612 INFO [stderr]   |
Dec 18 13:55:59.612 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 13:55:59.612 INFO [stderr] 
Dec 18 13:55:59.612 INFO [stderr] warning: unused import: `std::ascii::AsciiExt`
Dec 18 13:55:59.612 INFO [stderr]  --> src/connstring.rs:4:5
Dec 18 13:55:59.612 INFO [stderr]   |
Dec 18 13:55:59.612 INFO [stderr] 4 | use std::ascii::AsciiExt;
Dec 18 13:55:59.612 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 18 13:55:59.612 INFO [stderr] 
Dec 18 13:56:01.456 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.80s
Dec 18 13:56:02.000 INFO running `"docker" "inspect" "58e7af37d2bbb973f9b5ee2a800a733291620765f837b100acae1a8214177b16"`
Dec 18 13:56:02.090 INFO running `"docker" "rm" "-f" "58e7af37d2bbb973f9b5ee2a800a733291620765f837b100acae1a8214177b16"`
Dec 18 13:56:02.179 INFO [stdout] 58e7af37d2bbb973f9b5ee2a800a733291620765f837b100acae1a8214177b16