Dec 01 00:19:04.719 INFO checking copperline-0.3.0 against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Dec 01 00:19:04.719 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-6/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +32252761328f59ccfadb1bafb8148c685bc830b3-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 00:19:05.020 INFO [stdout] 0b0c7cb6ecc6c2833c2f9b0c20d4fd730c51b5b3649f8a0ca4baf29110eaa09c
Dec 01 00:19:05.028 INFO running `"docker" "start" "-a" "0b0c7cb6ecc6c2833c2f9b0c20d4fd730c51b5b3649f8a0ca4baf29110eaa09c"`
Dec 01 00:19:05.848 INFO [stderr] usermod: no changes
Dec 01 00:19:05.897 INFO [stderr]     Checking strcursor v0.1.0
Dec 01 00:19:05.897 INFO [stderr]     Checking nix v0.4.3
Dec 01 00:19:08.616 INFO [stderr]     Checking copperline v0.3.0 (/source)
Dec 01 00:19:10.036 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 01 00:19:10.036 INFO [stderr]   --> src/lib.rs:61:26
Dec 01 00:19:10.036 INFO [stderr]    |
Dec 01 00:19:10.036 INFO [stderr] 61 |                 for _ in (0..len) {
Dec 01 00:19:10.036 INFO [stderr]    |                          ^^^^^^^^ help: remove these parentheses
Dec 01 00:19:10.036 INFO [stderr]    |
Dec 01 00:19:10.036 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 01 00:19:10.036 INFO [stderr] 
Dec 01 00:19:10.040 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 01 00:19:10.040 INFO [stderr]    --> src/lib.rs:109:26
Dec 01 00:19:10.040 INFO [stderr]     |
Dec 01 00:19:10.040 INFO [stderr] 109 |                 for _ in (0..len) {
Dec 01 00:19:10.040 INFO [stderr]     |                          ^^^^^^^^ help: remove these parentheses
Dec 01 00:19:10.040 INFO [stderr] 
Dec 01 00:19:10.056 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 01 00:19:10.056 INFO [stderr]   --> src/lib.rs:61:26
Dec 01 00:19:10.056 INFO [stderr]    |
Dec 01 00:19:10.056 INFO [stderr] 61 |                 for _ in (0..len) {
Dec 01 00:19:10.056 INFO [stderr]    |                          ^^^^^^^^ help: remove these parentheses
Dec 01 00:19:10.056 INFO [stderr]    |
Dec 01 00:19:10.056 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 01 00:19:10.056 INFO [stderr] 
Dec 01 00:19:10.060 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 01 00:19:10.060 INFO [stderr]    --> src/lib.rs:109:26
Dec 01 00:19:10.060 INFO [stderr]     |
Dec 01 00:19:10.060 INFO [stderr] 109 |                 for _ in (0..len) {
Dec 01 00:19:10.060 INFO [stderr]     |                          ^^^^^^^^ help: remove these parentheses
Dec 01 00:19:10.060 INFO [stderr] 
Dec 01 00:19:10.160 INFO [stderr] warning: unused import: `RawDecoder`
Dec 01 00:19:10.160 INFO [stderr]  --> src/parser.rs:3:36
Dec 01 00:19:10.160 INFO [stderr]   |
Dec 01 00:19:10.160 INFO [stderr] 3 | use encoding::types::{EncodingRef, RawDecoder};
Dec 01 00:19:10.160 INFO [stderr]   |                                    ^^^^^^^^^^
Dec 01 00:19:10.160 INFO [stderr]   |
Dec 01 00:19:10.160 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 01 00:19:10.160 INFO [stderr] 
Dec 01 00:19:10.220 INFO [stderr] warning: method is never used: `reset`
Dec 01 00:19:10.220 INFO [stderr]   --> src/buffer.rs:29:5
Dec 01 00:19:10.220 INFO [stderr]    |
Dec 01 00:19:10.220 INFO [stderr] 29 |     pub fn reset(&mut self) {
Dec 01 00:19:10.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 00:19:10.220 INFO [stderr]    |
Dec 01 00:19:10.220 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 01 00:19:10.220 INFO [stderr] 
Dec 01 00:19:10.220 INFO [stderr] warning: method is never used: `pop`
Dec 01 00:19:10.220 INFO [stderr]   --> src/history.rs:67:5
Dec 01 00:19:10.220 INFO [stderr]    |
Dec 01 00:19:10.220 INFO [stderr] 67 |     pub fn pop(&mut self) -> Option<String> {
Dec 01 00:19:10.220 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 00:19:10.220 INFO [stderr] 
Dec 01 00:19:10.288 INFO [stderr] warning: unused import: `RawDecoder`
Dec 01 00:19:10.288 INFO [stderr]  --> src/parser.rs:3:36
Dec 01 00:19:10.288 INFO [stderr]   |
Dec 01 00:19:10.288 INFO [stderr] 3 | use encoding::types::{EncodingRef, RawDecoder};
Dec 01 00:19:10.288 INFO [stderr]   |                                    ^^^^^^^^^^
Dec 01 00:19:10.288 INFO [stderr]   |
Dec 01 00:19:10.288 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 01 00:19:10.288 INFO [stderr] 
Dec 01 00:19:10.340 INFO [stderr] warning: method is never used: `reset`
Dec 01 00:19:10.340 INFO [stderr]   --> src/buffer.rs:29:5
Dec 01 00:19:10.340 INFO [stderr]    |
Dec 01 00:19:10.340 INFO [stderr] 29 |     pub fn reset(&mut self) {
Dec 01 00:19:10.340 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 00:19:10.340 INFO [stderr]    |
Dec 01 00:19:10.340 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 01 00:19:10.340 INFO [stderr] 
Dec 01 00:19:10.340 INFO [stderr] warning: method is never used: `pop`
Dec 01 00:19:10.340 INFO [stderr]   --> src/history.rs:67:5
Dec 01 00:19:10.340 INFO [stderr]    |
Dec 01 00:19:10.340 INFO [stderr] 67 |     pub fn pop(&mut self) -> Option<String> {
Dec 01 00:19:10.340 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 00:19:10.340 INFO [stderr] 
Dec 01 00:19:11.920 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.03s
Dec 01 00:19:11.920 INFO [stderr] su: No module specific data is present
Dec 01 00:19:12.737 INFO running `"docker" "inspect" "0b0c7cb6ecc6c2833c2f9b0c20d4fd730c51b5b3649f8a0ca4baf29110eaa09c"`
Dec 01 00:19:12.911 INFO running `"docker" "rm" "-f" "0b0c7cb6ecc6c2833c2f9b0c20d4fd730c51b5b3649f8a0ca4baf29110eaa09c"`
Dec 01 00:19:13.044 INFO [stdout] 0b0c7cb6ecc6c2833c2f9b0c20d4fd730c51b5b3649f8a0ca4baf29110eaa09c