Dec 18 08:12:33.720 INFO checking CasperGN/RustChain against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 08:12:33.721 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/CasperGN/RustChain:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 08:12:33.949 INFO [stdout] aba3ecb82b3fa74793af3d8ab2b063e31e2cde1f733155dc292a35efec143d9e
Dec 18 08:12:33.951 INFO running `"docker" "start" "-a" "aba3ecb82b3fa74793af3d8ab2b063e31e2cde1f733155dc292a35efec143d9e"`
Dec 18 08:12:34.599 INFO [stderr]     Checking generic-array v0.9.0
Dec 18 08:12:35.112 INFO [stderr]     Checking digest v0.7.2
Dec 18 08:12:35.371 INFO [stderr]     Checking sha2 v0.7.0
Dec 18 08:12:35.922 INFO [stderr]     Checking RustChain v0.1.0 (/opt/crater/workdir)
Dec 18 08:12:36.395 INFO [stderr] warning: unused import: `decode`
Dec 18 08:12:36.395 INFO [stderr]   --> src/main.rs:20:22
Dec 18 08:12:36.395 INFO [stderr]    |
Dec 18 08:12:36.395 INFO [stderr] 20 | use base64::{encode, decode};
Dec 18 08:12:36.395 INFO [stderr]    |                      ^^^^^^
Dec 18 08:12:36.395 INFO [stderr]    |
Dec 18 08:12:36.395 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 08:12:36.395 INFO [stderr] 
Dec 18 08:12:36.424 INFO [stderr] warning: unused import: `decode`
Dec 18 08:12:36.424 INFO [stderr]   --> src/main.rs:20:22
Dec 18 08:12:36.424 INFO [stderr]    |
Dec 18 08:12:36.424 INFO [stderr] 20 | use base64::{encode, decode};
Dec 18 08:12:36.424 INFO [stderr]    |                      ^^^^^^
Dec 18 08:12:36.424 INFO [stderr]    |
Dec 18 08:12:36.424 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 08:12:36.424 INFO [stderr] 
Dec 18 08:12:36.446 INFO [stderr] warning: unused variable: `encVec`
Dec 18 08:12:36.446 INFO [stderr]   --> src/main.rs:30:13
Dec 18 08:12:36.446 INFO [stderr]    |
Dec 18 08:12:36.446 INFO [stderr] 30 |     let mut encVec: Vec<u8> = Vec::new();
Dec 18 08:12:36.446 INFO [stderr]    |             ^^^^^^ help: consider using `_encVec` instead
Dec 18 08:12:36.446 INFO [stderr]    |
Dec 18 08:12:36.446 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 08:12:36.446 INFO [stderr] 
Dec 18 08:12:36.446 INFO [stderr] warning: unused variable: `newHashedBlock`
Dec 18 08:12:36.446 INFO [stderr]   --> src/main.rs:83:9
Dec 18 08:12:36.446 INFO [stderr]    |
Dec 18 08:12:36.446 INFO [stderr] 83 |     let newHashedBlock = generateHash(newBlockTup);
Dec 18 08:12:36.446 INFO [stderr]    |         ^^^^^^^^^^^^^^ help: consider using `_newHashedBlock` instead
Dec 18 08:12:36.446 INFO [stderr] 
Dec 18 08:12:36.453 INFO [stderr] warning: variable does not need to be mutable
Dec 18 08:12:36.453 INFO [stderr]   --> src/main.rs:30:9
Dec 18 08:12:36.453 INFO [stderr]    |
Dec 18 08:12:36.453 INFO [stderr] 30 |     let mut encVec: Vec<u8> = Vec::new();
Dec 18 08:12:36.453 INFO [stderr]    |         ----^^^^^^
Dec 18 08:12:36.453 INFO [stderr]    |         |
Dec 18 08:12:36.453 INFO [stderr]    |         help: remove this `mut`
Dec 18 08:12:36.453 INFO [stderr]    |
Dec 18 08:12:36.453 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 08:12:36.453 INFO [stderr] 
Dec 18 08:12:36.467 INFO [stderr] warning: unused variable: `encVec`
Dec 18 08:12:36.467 INFO [stderr]   --> src/main.rs:30:13
Dec 18 08:12:36.467 INFO [stderr]    |
Dec 18 08:12:36.467 INFO [stderr] 30 |     let mut encVec: Vec<u8> = Vec::new();
Dec 18 08:12:36.468 INFO [stderr]    |             ^^^^^^ help: consider using `_encVec` instead
Dec 18 08:12:36.468 INFO [stderr]    |
Dec 18 08:12:36.468 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 08:12:36.468 INFO [stderr] 
Dec 18 08:12:36.468 INFO [stderr] warning: unused variable: `newHashedBlock`
Dec 18 08:12:36.468 INFO [stderr]   --> src/main.rs:83:9
Dec 18 08:12:36.468 INFO [stderr]    |
Dec 18 08:12:36.468 INFO [stderr] 83 |     let newHashedBlock = generateHash(newBlockTup);
Dec 18 08:12:36.468 INFO [stderr]    |         ^^^^^^^^^^^^^^ help: consider using `_newHashedBlock` instead
Dec 18 08:12:36.468 INFO [stderr] 
Dec 18 08:12:36.477 INFO [stderr] warning: variable does not need to be mutable
Dec 18 08:12:36.477 INFO [stderr]   --> src/main.rs:30:9
Dec 18 08:12:36.477 INFO [stderr]    |
Dec 18 08:12:36.477 INFO [stderr] 30 |     let mut encVec: Vec<u8> = Vec::new();
Dec 18 08:12:36.477 INFO [stderr]    |         ----^^^^^^
Dec 18 08:12:36.477 INFO [stderr]    |         |
Dec 18 08:12:36.477 INFO [stderr]    |         help: remove this `mut`
Dec 18 08:12:36.477 INFO [stderr]    |
Dec 18 08:12:36.477 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 08:12:36.478 INFO [stderr] 
Dec 18 08:12:36.499 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.95s
Dec 18 08:12:36.778 INFO running `"docker" "inspect" "aba3ecb82b3fa74793af3d8ab2b063e31e2cde1f733155dc292a35efec143d9e"`
Dec 18 08:12:36.910 INFO running `"docker" "rm" "-f" "aba3ecb82b3fa74793af3d8ab2b063e31e2cde1f733155dc292a35efec143d9e"`
Dec 18 08:12:37.085 INFO [stdout] aba3ecb82b3fa74793af3d8ab2b063e31e2cde1f733155dc292a35efec143d9e