[INFO] cloning repository vasily-kirichenko/failure_perf_issue
[INFO] running `"git" "clone" "--bare" "git://github.com/vasily-kirichenko/failure_perf_issue.git" "work/cache/sources/gh/vasily-kirichenko/failure_perf_issue"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/vasily-kirichenko/failure_perf_issue'...
[INFO] running `"git" "clone" "work/cache/sources/gh/vasily-kirichenko/failure_perf_issue" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/vasily-kirichenko/failure_perf_issue"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/vasily-kirichenko/failure_perf_issue'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/vasily-kirichenko/failure_perf_issue" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/vasily-kirichenko/failure_perf_issue"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/vasily-kirichenko/failure_perf_issue'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cd2d108809f03ee3a02636d8c184f5f731abe8c4
[INFO] sha for GitHub repo vasily-kirichenko/failure_perf_issue: cd2d108809f03ee3a02636d8c184f5f731abe8c4
[INFO] validating manifest of vasily-kirichenko/failure_perf_issue on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of vasily-kirichenko/failure_perf_issue on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing vasily-kirichenko/failure_perf_issue
[INFO] finished frobbing vasily-kirichenko/failure_perf_issue
[INFO] frobbed toml for vasily-kirichenko/failure_perf_issue written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/vasily-kirichenko/failure_perf_issue/Cargo.toml
[INFO] started frobbing vasily-kirichenko/failure_perf_issue
[INFO] finished frobbing vasily-kirichenko/failure_perf_issue
[INFO] frobbed toml for vasily-kirichenko/failure_perf_issue written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/vasily-kirichenko/failure_perf_issue/Cargo.toml
[INFO] crate vasily-kirichenko/failure_perf_issue already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking vasily-kirichenko/failure_perf_issue against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-7/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/vasily-kirichenko/failure_perf_issue:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a33c8f42b86b41d423d71baccebd6f7fe054f4780b41cf2920edd78b7e4d0e49
[INFO] running `"docker" "start" "-a" "a33c8f42b86b41d423d71baccebd6f7fe054f4780b41cf2920edd78b7e4d0e49"`
[INFO] [stderr]    Compiling cc v1.0.12
[INFO] [stderr]    Compiling proc-macro2 v0.3.7
[INFO] [stderr]     Checking base64 v0.9.1
[INFO] [stderr]     Checking hyper v0.11.25
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling serde_derive_internals v0.23.1
[INFO] [stderr]    Compiling serde_derive v1.0.43
[INFO] [stderr]     Checking backtrace v0.3.6
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking failure_perf_issue v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `content_type`
[INFO] [stderr]   --> src/main.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 |         let content_type = res.headers().get::<ContentType>();
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_content_type`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `disp`
[INFO] [stderr]   --> src/main.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let disp = res.headers().get::<ContentDisposition>();
[INFO] [stderr]    |             ^^^^ help: consider prefixing with an underscore: `_disp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `out_dir`
[INFO] [stderr]   --> src/main.rs:52:40
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn download(core: &mut Core, uri: Uri, out_dir: &Path) -> Result<String, Error> {
[INFO] [stderr]    |                                        ^^^^^^^ help: consider prefixing with an underscore: `_out_dir`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_name`
[INFO] [stderr]    --> src/main.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |     let file_name = download(&mut core, artifact_uri, out_dir)?;
[INFO] [stderr]     |         ^^^^^^^^^ help: consider prefixing with an underscore: `_file_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `content_type`
[INFO] [stderr]   --> src/main.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 |         let content_type = res.headers().get::<ContentType>();
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_content_type`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `disp`
[INFO] [stderr]   --> src/main.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let disp = res.headers().get::<ContentDisposition>();
[INFO] [stderr]    |             ^^^^ help: consider prefixing with an underscore: `_disp`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `out_dir`
[INFO] [stderr]   --> src/main.rs:52:40
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn download(core: &mut Core, uri: Uri, out_dir: &Path) -> Result<String, Error> {
[INFO] [stderr]    |                                        ^^^^^^^ help: consider prefixing with an underscore: `_out_dir`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_name`
[INFO] [stderr]    --> src/main.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |     let file_name = download(&mut core, artifact_uri, out_dir)?;
[INFO] [stderr]     |         ^^^^^^^^^ help: consider prefixing with an underscore: `_file_name`
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `iterator_find_map` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(iterator_find_map)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `iterator_find_map` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(iterator_find_map)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.17s
[INFO] running `"docker" "inspect" "a33c8f42b86b41d423d71baccebd6f7fe054f4780b41cf2920edd78b7e4d0e49"`
[INFO] running `"docker" "rm" "-f" "a33c8f42b86b41d423d71baccebd6f7fe054f4780b41cf2920edd78b7e4d0e49"`
[INFO] [stdout] a33c8f42b86b41d423d71baccebd6f7fe054f4780b41cf2920edd78b7e4d0e49