[INFO] updating cached repository micahflee/cryptopals
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/micahflee/cryptopals
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/micahflee/cryptopals" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/micahflee/cryptopals"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/micahflee/cryptopals'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/micahflee/cryptopals" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/micahflee/cryptopals"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/micahflee/cryptopals'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 57119865e44a180d2c1deb877ebfd305543e563e
[INFO] sha for GitHub repo micahflee/cryptopals: 57119865e44a180d2c1deb877ebfd305543e563e
[INFO] validating manifest of micahflee/cryptopals on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of micahflee/cryptopals on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing micahflee/cryptopals
[INFO] finished frobbing micahflee/cryptopals
[INFO] frobbed toml for micahflee/cryptopals written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/micahflee/cryptopals/Cargo.toml
[INFO] started frobbing micahflee/cryptopals
[INFO] finished frobbing micahflee/cryptopals
[INFO] frobbed toml for micahflee/cryptopals written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/micahflee/cryptopals/Cargo.toml
[INFO] crate micahflee/cryptopals already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking micahflee/cryptopals against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-4/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/micahflee/cryptopals:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 65a380d8159f7fa5fcd86064da713ee8aef77b2807a5e02ab794d34cb85e6ea2
[INFO] running `"docker" "start" "-a" "65a380d8159f7fa5fcd86064da713ee8aef77b2807a5e02ab794d34cb85e6ea2"`
[INFO] [stderr]     Checking rand_core v0.1.0-pre.0
[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/crater/workdir)
[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] 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]     Finished dev [unoptimized + debuginfo] target(s) in 9.81s
[INFO] running `"docker" "inspect" "65a380d8159f7fa5fcd86064da713ee8aef77b2807a5e02ab794d34cb85e6ea2"`
[INFO] running `"docker" "rm" "-f" "65a380d8159f7fa5fcd86064da713ee8aef77b2807a5e02ab794d34cb85e6ea2"`
[INFO] [stdout] 65a380d8159f7fa5fcd86064da713ee8aef77b2807a5e02ab794d34cb85e6ea2