[INFO] updating cached repository gomiero/sha256
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gomiero/sha256
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gomiero/sha256" "work/ex/beta-1.38-1/sources/1.37.0/gh/gomiero/sha256"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/gomiero/sha256'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gomiero/sha256" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gomiero/sha256"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gomiero/sha256'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a9a35c2648d9e503cf04d5c0c499924d64e6f6d1
[INFO] sha for GitHub repo gomiero/sha256: a9a35c2648d9e503cf04d5c0c499924d64e6f6d1
[INFO] validating manifest of gomiero/sha256 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gomiero/sha256 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing gomiero/sha256
[INFO] finished frobbing gomiero/sha256
[INFO] frobbed toml for gomiero/sha256 written to work/ex/beta-1.38-1/sources/1.37.0/gh/gomiero/sha256/Cargo.toml
[INFO] started frobbing gomiero/sha256
[INFO] finished frobbing gomiero/sha256
[INFO] frobbed toml for gomiero/sha256 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gomiero/sha256/Cargo.toml
[INFO] crate gomiero/sha256 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing gomiero/sha256 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gomiero/sha256:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 752b44ff3a9169347c7eb047d3a6df8b86639e3c605c4a6145f71fa6c4915945
[INFO] running `"docker" "start" "-a" "752b44ff3a9169347c7eb047d3a6df8b86639e3c605c4a6145f71fa6c4915945"`
[INFO] [stderr]    Compiling sha256 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |     for mut ck in vb.chunks(64) {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `"docker" "inspect" "752b44ff3a9169347c7eb047d3a6df8b86639e3c605c4a6145f71fa6c4915945"`
[INFO] running `"docker" "rm" "-f" "752b44ff3a9169347c7eb047d3a6df8b86639e3c605c4a6145f71fa6c4915945"`
[INFO] [stdout] 752b44ff3a9169347c7eb047d3a6df8b86639e3c605c4a6145f71fa6c4915945
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gomiero/sha256:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8cd3e073716608d7db1c4c62774bdfea728b55ffea733170f7c4c5a7a450ac21
[INFO] running `"docker" "start" "-a" "8cd3e073716608d7db1c4c62774bdfea728b55ffea733170f7c4c5a7a450ac21"`
[INFO] [stderr]    Compiling sha256 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |     for mut ck in vb.chunks(64) {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "8cd3e073716608d7db1c4c62774bdfea728b55ffea733170f7c4c5a7a450ac21"`
[INFO] running `"docker" "rm" "-f" "8cd3e073716608d7db1c4c62774bdfea728b55ffea733170f7c4c5a7a450ac21"`
[INFO] [stdout] 8cd3e073716608d7db1c4c62774bdfea728b55ffea733170f7c4c5a7a450ac21
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gomiero/sha256:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 4891ca3985458c0e00d117cdf033a54e4db2e0d60e483fa5235c45a61aad138d
[INFO] running `"docker" "start" "-a" "4891ca3985458c0e00d117cdf033a54e4db2e0d60e483fa5235c45a61aad138d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sha256-06c5487bcd0e10b0
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4891ca3985458c0e00d117cdf033a54e4db2e0d60e483fa5235c45a61aad138d"`
[INFO] running `"docker" "rm" "-f" "4891ca3985458c0e00d117cdf033a54e4db2e0d60e483fa5235c45a61aad138d"`
[INFO] [stdout] 4891ca3985458c0e00d117cdf033a54e4db2e0d60e483fa5235c45a61aad138d