[INFO] updating cached repository daogangtang/cryptopals
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/daogangtang/cryptopals
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/daogangtang/cryptopals" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/daogangtang/cryptopals"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/daogangtang/cryptopals'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/daogangtang/cryptopals" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/daogangtang/cryptopals"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/daogangtang/cryptopals'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 06bf9e3c72cedfb831dfc5e6fffe74c61c5b873b
[INFO] sha for GitHub repo daogangtang/cryptopals: 06bf9e3c72cedfb831dfc5e6fffe74c61c5b873b
[INFO] validating manifest of daogangtang/cryptopals on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of daogangtang/cryptopals on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing daogangtang/cryptopals
[INFO] finished frobbing daogangtang/cryptopals
[INFO] frobbed toml for daogangtang/cryptopals written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/daogangtang/cryptopals/Cargo.toml
[INFO] started frobbing daogangtang/cryptopals
[INFO] finished frobbing daogangtang/cryptopals
[INFO] frobbed toml for daogangtang/cryptopals written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/daogangtang/cryptopals/Cargo.toml
[INFO] crate daogangtang/cryptopals already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking daogangtang/cryptopals against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-2/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/daogangtang/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 54032cfe19cdfd63303caf27dcde98cf03fcd26f131da3782beb624948bb4bd1
[INFO] running `"docker" "start" "-a" "54032cfe19cdfd63303caf27dcde98cf03fcd26f131da3782beb624948bb4bd1"`
[INFO] [stderr]     Checking cryptopals v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `hex`
[INFO] [stderr]  --> src/break-repeating-key-xor.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use hex;
[INFO] [stderr]   |     ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hex`
[INFO] [stderr]  --> src/helper.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use hex;
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hex`
[INFO] [stderr]  --> src/break-repeating-key-xor.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use hex;
[INFO] [stderr]   |     ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hex`
[INFO] [stderr]  --> src/helper.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use hex;
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `target_msg` is assigned to, but never used
[INFO] [stderr]   --> src/helper.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let mut target_msg: Vec<u8> = vec![];
[INFO] [stderr]    |             ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_target_msg` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `target_msg` is never read
[INFO] [stderr]   --> src/helper.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |             target_msg = decrypted_bytes;
[INFO] [stderr]    |             ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `target_msg` is assigned to, but never used
[INFO] [stderr]   --> src/helper.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let mut target_msg: Vec<u8> = vec![];
[INFO] [stderr]    |             ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]    = note: consider using `_target_msg` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `target_msg` is never read
[INFO] [stderr]   --> src/helper.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |             target_msg = decrypted_bytes;
[INFO] [stderr]    |             ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.55s
[INFO] running `"docker" "inspect" "54032cfe19cdfd63303caf27dcde98cf03fcd26f131da3782beb624948bb4bd1"`
[INFO] running `"docker" "rm" "-f" "54032cfe19cdfd63303caf27dcde98cf03fcd26f131da3782beb624948bb4bd1"`
[INFO] [stdout] 54032cfe19cdfd63303caf27dcde98cf03fcd26f131da3782beb624948bb4bd1