[INFO] updating cached repository https://github.com/micahflee/cryptopals
[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] 57119865e44a180d2c1deb877ebfd305543e563e
[INFO] checking micahflee/cryptopals against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmicahflee%2Fcryptopals" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/micahflee/cryptopals 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/micahflee/cryptopals
[INFO] finished tweaking git repo https://github.com/micahflee/cryptopals
[INFO] tweaked toml for git repo https://github.com/micahflee/cryptopals written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/micahflee/cryptopals 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-7/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-7/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] 53fc27e7dc47994c572ffe5bd27190e695a0859ff25fdd510f97086f69fc862d
[INFO] running `"docker" "start" "-a" "53fc27e7dc47994c572ffe5bd27190e695a0859ff25fdd510f97086f69fc862d"`
[INFO] [stderr]     Checking rand_core v0.1.0-pre.0
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking rust-crypto v0.2.36
[INFO] [stderr]     Checking queryst v2.0.0
[INFO] [stderr]     Checking rand v0.5.0-pre.0
[INFO] [stderr]     Checking cryptopals v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/set2.rs:162:33
[INFO] [stderr]     |
[INFO] [stderr] 162 |     let mut prev_block = vec![];;
[INFO] [stderr]     |                                 ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/set2.rs:368:33
[INFO] [stderr]     |
[INFO] [stderr] 368 |     let mut prev_block = vec![];;
[INFO] [stderr]     |                                 ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/set2.rs:162:33
[INFO] [stderr]     |
[INFO] [stderr] 162 |     let mut prev_block = vec![];;
[INFO] [stderr]     |                                 ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/set2.rs:368:33
[INFO] [stderr]     |
[INFO] [stderr] 368 |     let mut prev_block = vec![];;
[INFO] [stderr]     |                                 ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/set2.rs:393:17
[INFO] [stderr]     |
[INFO] [stderr] 393 |             let mut ciphertext = encryption_oracle3(key.clone(), prefix.clone(), full_message);
[INFO] [stderr]     |                 ----^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/set2.rs:421:21
[INFO] [stderr]     |
[INFO] [stderr] 421 |                 let mut ciphertext = encryption_oracle3(key.clone(), prefix.clone(), full_message);
[INFO] [stderr]     |                     ----^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/set2.rs:393:17
[INFO] [stderr]     |
[INFO] [stderr] 393 |             let mut ciphertext = encryption_oracle3(key.clone(), prefix.clone(), full_message);
[INFO] [stderr]     |                 ----^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/set2.rs:421:21
[INFO] [stderr]     |
[INFO] [stderr] 421 |                 let mut ciphertext = encryption_oracle3(key.clone(), prefix.clone(), full_message);
[INFO] [stderr]     |                     ----^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `blocks_into_bytes`
[INFO] [stderr]   --> src/utils.rs:59:1
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub fn blocks_into_bytes(blocks: Vec<Vec<u8>>) -> Vec<u8> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.77s
[INFO] running `"docker" "inspect" "53fc27e7dc47994c572ffe5bd27190e695a0859ff25fdd510f97086f69fc862d"`
[INFO] running `"docker" "rm" "-f" "53fc27e7dc47994c572ffe5bd27190e695a0859ff25fdd510f97086f69fc862d"`
[INFO] [stdout] 53fc27e7dc47994c572ffe5bd27190e695a0859ff25fdd510f97086f69fc862d