Dec 05 15:04:10.558 INFO checking copperline-0.3.0 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 15:04:10.559 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 05 15:04:10.758 INFO [stdout] b81e3f2cbc007d710c6c3ff55b0e12880ebe219d343bc8c1cd3d2cfbf7a254e7
Dec 05 15:04:10.761 INFO running `"docker" "start" "-a" "b81e3f2cbc007d710c6c3ff55b0e12880ebe219d343bc8c1cd3d2cfbf7a254e7"`
Dec 05 15:04:11.348 INFO [stderr] usermod: no changes
Dec 05 15:04:11.396 INFO [stderr]     Checking strcursor v0.1.0
Dec 05 15:04:11.396 INFO [stderr]     Checking nix v0.4.3
Dec 05 15:04:13.814 INFO [stderr]     Checking copperline v0.3.0 (/source)
Dec 05 15:04:15.151 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 05 15:04:15.151 INFO [stderr]   --> src/lib.rs:61:26
Dec 05 15:04:15.151 INFO [stderr]    |
Dec 05 15:04:15.151 INFO [stderr] 61 |                 for _ in (0..len) {
Dec 05 15:04:15.151 INFO [stderr]    |                          ^^^^^^^^ help: remove these parentheses
Dec 05 15:04:15.159 INFO [stderr]    |
Dec 05 15:04:15.159 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 05 15:04:15.159 INFO [stderr] 
Dec 05 15:04:15.159 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 05 15:04:15.159 INFO [stderr]    --> src/lib.rs:109:26
Dec 05 15:04:15.159 INFO [stderr]     |
Dec 05 15:04:15.159 INFO [stderr] 109 |                 for _ in (0..len) {
Dec 05 15:04:15.159 INFO [stderr]     |                          ^^^^^^^^ help: remove these parentheses
Dec 05 15:04:15.159 INFO [stderr] 
Dec 05 15:04:15.399 INFO [stderr] warning: unused import: `RawDecoder`
Dec 05 15:04:15.399 INFO [stderr]  --> src/parser.rs:3:36
Dec 05 15:04:15.399 INFO [stderr]   |
Dec 05 15:04:15.399 INFO [stderr] 3 | use encoding::types::{EncodingRef, RawDecoder};
Dec 05 15:04:15.399 INFO [stderr]   |                                    ^^^^^^^^^^
Dec 05 15:04:15.399 INFO [stderr]   |
Dec 05 15:04:15.399 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 15:04:15.399 INFO [stderr] 
Dec 05 15:04:15.467 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 05 15:04:15.467 INFO [stderr]   --> src/lib.rs:61:26
Dec 05 15:04:15.467 INFO [stderr]    |
Dec 05 15:04:15.467 INFO [stderr] 61 |                 for _ in (0..len) {
Dec 05 15:04:15.467 INFO [stderr]    |                          ^^^^^^^^ help: remove these parentheses
Dec 05 15:04:15.467 INFO [stderr]    |
Dec 05 15:04:15.467 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 05 15:04:15.467 INFO [stderr] 
Dec 05 15:04:15.467 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 05 15:04:15.467 INFO [stderr]    --> src/lib.rs:109:26
Dec 05 15:04:15.467 INFO [stderr]     |
Dec 05 15:04:15.467 INFO [stderr] 109 |                 for _ in (0..len) {
Dec 05 15:04:15.467 INFO [stderr]     |                          ^^^^^^^^ help: remove these parentheses
Dec 05 15:04:15.467 INFO [stderr] 
Dec 05 15:04:15.507 INFO [stderr] warning: method is never used: `reset`
Dec 05 15:04:15.507 INFO [stderr]   --> src/buffer.rs:29:5
Dec 05 15:04:15.507 INFO [stderr]    |
Dec 05 15:04:15.507 INFO [stderr] 29 |     pub fn reset(&mut self) {
Dec 05 15:04:15.507 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:04:15.507 INFO [stderr]    |
Dec 05 15:04:15.507 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 15:04:15.507 INFO [stderr] 
Dec 05 15:04:15.507 INFO [stderr] warning: method is never used: `pop`
Dec 05 15:04:15.507 INFO [stderr]   --> src/history.rs:67:5
Dec 05 15:04:15.507 INFO [stderr]    |
Dec 05 15:04:15.507 INFO [stderr] 67 |     pub fn pop(&mut self) -> Option<String> {
Dec 05 15:04:15.507 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:04:15.507 INFO [stderr] 
Dec 05 15:04:15.571 INFO [stderr] warning: unused import: `RawDecoder`
Dec 05 15:04:15.571 INFO [stderr]  --> src/parser.rs:3:36
Dec 05 15:04:15.571 INFO [stderr]   |
Dec 05 15:04:15.571 INFO [stderr] 3 | use encoding::types::{EncodingRef, RawDecoder};
Dec 05 15:04:15.571 INFO [stderr]   |                                    ^^^^^^^^^^
Dec 05 15:04:15.571 INFO [stderr]   |
Dec 05 15:04:15.571 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 15:04:15.571 INFO [stderr] 
Dec 05 15:04:15.627 INFO [stderr] warning: method is never used: `reset`
Dec 05 15:04:15.627 INFO [stderr]   --> src/buffer.rs:29:5
Dec 05 15:04:15.627 INFO [stderr]    |
Dec 05 15:04:15.627 INFO [stderr] 29 |     pub fn reset(&mut self) {
Dec 05 15:04:15.627 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:04:15.627 INFO [stderr]    |
Dec 05 15:04:15.627 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 15:04:15.627 INFO [stderr] 
Dec 05 15:04:15.627 INFO [stderr] warning: method is never used: `pop`
Dec 05 15:04:15.627 INFO [stderr]   --> src/history.rs:67:5
Dec 05 15:04:15.627 INFO [stderr]    |
Dec 05 15:04:15.627 INFO [stderr] 67 |     pub fn pop(&mut self) -> Option<String> {
Dec 05 15:04:15.627 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 15:04:15.627 INFO [stderr] 
Dec 05 15:04:16.939 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.56s
Dec 05 15:04:16.939 INFO [stderr] su: No module specific data is present
Dec 05 15:04:17.541 INFO running `"docker" "inspect" "b81e3f2cbc007d710c6c3ff55b0e12880ebe219d343bc8c1cd3d2cfbf7a254e7"`
Dec 05 15:04:17.705 INFO running `"docker" "rm" "-f" "b81e3f2cbc007d710c6c3ff55b0e12880ebe219d343bc8c1cd3d2cfbf7a254e7"`
Dec 05 15:04:17.983 INFO [stdout] b81e3f2cbc007d710c6c3ff55b0e12880ebe219d343bc8c1cd3d2cfbf7a254e7