Dec 18 17:22:00.672 INFO checking copperline-0.3.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 17:22:00.673 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/copperline/0.3.0:/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 17:22:00.959 INFO [stdout] ce2a08637a1a16e5109789b2249aa30cbc1f92d73978b7aa24ba2f682a533a93
Dec 18 17:22:00.972 INFO running `"docker" "start" "-a" "ce2a08637a1a16e5109789b2249aa30cbc1f92d73978b7aa24ba2f682a533a93"`
Dec 18 17:22:02.092 INFO [stderr]     Checking strcursor v0.1.0
Dec 18 17:22:02.512 INFO [stderr]     Checking copperline v0.3.0 (/opt/crater/workdir)
Dec 18 17:22:02.956 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 18 17:22:02.956 INFO [stderr]   --> src/lib.rs:61:26
Dec 18 17:22:02.956 INFO [stderr]    |
Dec 18 17:22:02.956 INFO [stderr] 61 |                 for _ in (0..len) {
Dec 18 17:22:02.956 INFO [stderr]    |                          ^^^^^^^^ help: remove these parentheses
Dec 18 17:22:02.956 INFO [stderr]    |
Dec 18 17:22:02.956 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 17:22:02.956 INFO [stderr] 
Dec 18 17:22:02.956 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 18 17:22:02.956 INFO [stderr]    --> src/lib.rs:109:26
Dec 18 17:22:02.956 INFO [stderr]     |
Dec 18 17:22:02.956 INFO [stderr] 109 |                 for _ in (0..len) {
Dec 18 17:22:02.956 INFO [stderr]     |                          ^^^^^^^^ help: remove these parentheses
Dec 18 17:22:02.956 INFO [stderr] 
Dec 18 17:22:03.081 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 18 17:22:03.081 INFO [stderr]   --> src/lib.rs:61:26
Dec 18 17:22:03.081 INFO [stderr]    |
Dec 18 17:22:03.081 INFO [stderr] 61 |                 for _ in (0..len) {
Dec 18 17:22:03.081 INFO [stderr]    |                          ^^^^^^^^ help: remove these parentheses
Dec 18 17:22:03.081 INFO [stderr]    |
Dec 18 17:22:03.081 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 17:22:03.081 INFO [stderr] 
Dec 18 17:22:03.081 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 18 17:22:03.081 INFO [stderr]    --> src/lib.rs:109:26
Dec 18 17:22:03.081 INFO [stderr]     |
Dec 18 17:22:03.081 INFO [stderr] 109 |                 for _ in (0..len) {
Dec 18 17:22:03.081 INFO [stderr]     |                          ^^^^^^^^ help: remove these parentheses
Dec 18 17:22:03.081 INFO [stderr] 
Dec 18 17:22:03.094 INFO [stderr] warning: unused import: `RawDecoder`
Dec 18 17:22:03.094 INFO [stderr]  --> src/parser.rs:3:36
Dec 18 17:22:03.094 INFO [stderr]   |
Dec 18 17:22:03.094 INFO [stderr] 3 | use encoding::types::{EncodingRef, RawDecoder};
Dec 18 17:22:03.094 INFO [stderr]   |                                    ^^^^^^^^^^
Dec 18 17:22:03.094 INFO [stderr]   |
Dec 18 17:22:03.094 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 17:22:03.094 INFO [stderr] 
Dec 18 17:22:03.160 INFO [stderr] warning: method is never used: `reset`
Dec 18 17:22:03.160 INFO [stderr]   --> src/buffer.rs:29:5
Dec 18 17:22:03.160 INFO [stderr]    |
Dec 18 17:22:03.160 INFO [stderr] 29 |     pub fn reset(&mut self) {
Dec 18 17:22:03.160 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 17:22:03.160 INFO [stderr]    |
Dec 18 17:22:03.160 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 17:22:03.160 INFO [stderr] 
Dec 18 17:22:03.160 INFO [stderr] warning: method is never used: `pop`
Dec 18 17:22:03.160 INFO [stderr]   --> src/history.rs:67:5
Dec 18 17:22:03.160 INFO [stderr]    |
Dec 18 17:22:03.160 INFO [stderr] 67 |     pub fn pop(&mut self) -> Option<String> {
Dec 18 17:22:03.161 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 17:22:03.161 INFO [stderr] 
Dec 18 17:22:03.279 INFO [stderr] warning: unused import: `RawDecoder`
Dec 18 17:22:03.279 INFO [stderr]  --> src/parser.rs:3:36
Dec 18 17:22:03.279 INFO [stderr]   |
Dec 18 17:22:03.279 INFO [stderr] 3 | use encoding::types::{EncodingRef, RawDecoder};
Dec 18 17:22:03.279 INFO [stderr]   |                                    ^^^^^^^^^^
Dec 18 17:22:03.279 INFO [stderr]   |
Dec 18 17:22:03.279 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 17:22:03.279 INFO [stderr] 
Dec 18 17:22:03.351 INFO [stderr] warning: method is never used: `reset`
Dec 18 17:22:03.351 INFO [stderr]   --> src/buffer.rs:29:5
Dec 18 17:22:03.351 INFO [stderr]    |
Dec 18 17:22:03.351 INFO [stderr] 29 |     pub fn reset(&mut self) {
Dec 18 17:22:03.351 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 17:22:03.351 INFO [stderr]    |
Dec 18 17:22:03.351 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 17:22:03.351 INFO [stderr] 
Dec 18 17:22:03.351 INFO [stderr] warning: method is never used: `pop`
Dec 18 17:22:03.351 INFO [stderr]   --> src/history.rs:67:5
Dec 18 17:22:03.351 INFO [stderr]    |
Dec 18 17:22:03.351 INFO [stderr] 67 |     pub fn pop(&mut self) -> Option<String> {
Dec 18 17:22:03.351 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 17:22:03.351 INFO [stderr] 
Dec 18 17:22:03.682 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
Dec 18 17:22:04.386 INFO running `"docker" "inspect" "ce2a08637a1a16e5109789b2249aa30cbc1f92d73978b7aa24ba2f682a533a93"`
Dec 18 17:22:04.635 INFO running `"docker" "rm" "-f" "ce2a08637a1a16e5109789b2249aa30cbc1f92d73978b7aa24ba2f682a533a93"`
Dec 18 17:22:04.804 INFO [stdout] ce2a08637a1a16e5109789b2249aa30cbc1f92d73978b7aa24ba2f682a533a93