[INFO] updating cached repository https://github.com/muffinista/matasano
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3921b868828f79bb4773b0097769352c698cc508
[INFO] checking muffinista/matasano against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmuffinista%2Fmatasano" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/muffinista/matasano on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/muffinista/matasano
[INFO] finished tweaking git repo https://github.com/muffinista/matasano
[INFO] tweaked toml for git repo https://github.com/muffinista/matasano written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/muffinista/matasano already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8ae7af428be50550c86edc289d1bdf2e80c2b6b567f855da71b1825d5287c8fa
[INFO] running `"docker" "start" "-a" "8ae7af428be50550c86edc289d1bdf2e80c2b6b567f855da71b1825d5287c8fa"`
[INFO] [stderr]     Checking matasano v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/strings.rs:79:15
[INFO] [stderr]    |
[INFO] [stderr] 79 |       let file = try!(File::open(src));
[INFO] [stderr]    |                  ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/strings.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | / macro_rules! chr {
[INFO] [stderr] 20 | |       ( $x : expr ) => ( u8_to_char( $x ) );
[INFO] [stderr] 21 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/strings.rs:79:15
[INFO] [stderr]    |
[INFO] [stderr] 79 |       let file = try!(File::open(src));
[INFO] [stderr]    |                  ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]   --> src/strings.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | / macro_rules! chr {
[INFO] [stderr] 20 | |       ( $x : expr ) => ( u8_to_char( $x ) );
[INFO] [stderr] 21 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `oracle`
[INFO] [stderr]    --> src/set3_17.rs:101:13
[INFO] [stderr]     |
[INFO] [stderr] 101 |         let oracle = Oracle::new();
[INFO] [stderr]     |             ^^^^^^ help: consider prefixing with an underscore: `_oracle`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `key`
[INFO] [stderr]   --> src/set3_17.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         key: String,
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `data`
[INFO] [stderr]   --> src/set3_17.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |         data: Vec<u8>
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.92s
[INFO] running `"docker" "inspect" "8ae7af428be50550c86edc289d1bdf2e80c2b6b567f855da71b1825d5287c8fa"`
[INFO] running `"docker" "rm" "-f" "8ae7af428be50550c86edc289d1bdf2e80c2b6b567f855da71b1825d5287c8fa"`
[INFO] [stdout] 8ae7af428be50550c86edc289d1bdf2e80c2b6b567f855da71b1825d5287c8fa