[INFO] cloning repository https://github.com/eddstng/hashbrown
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eddstng/hashbrown" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feddstng%2Fhashbrown", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feddstng%2Fhashbrown'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ff850ea37a6bef32afe3f341f485be1030ff07f7
[INFO] checking eddstng/hashbrown against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feddstng%2Fhashbrown" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/eddstng/hashbrown
[INFO] finished tweaking git repo https://github.com/eddstng/hashbrown
[INFO] tweaked toml for git repo https://github.com/eddstng/hashbrown written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/eddstng/hashbrown on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/eddstng/hashbrown already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c5d3736289efbdde07ec55a6442499060f7549a5c417fa7b9979595bebdfa66
[INFO] running `Command { std: "docker" "start" "-a" "2c5d3736289efbdde07ec55a6442499060f7549a5c417fa7b9979595bebdfa66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c5d3736289efbdde07ec55a6442499060f7549a5c417fa7b9979595bebdfa66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c5d3736289efbdde07ec55a6442499060f7549a5c417fa7b9979595bebdfa66", kill_on_drop: false }`
[INFO] [stdout] 2c5d3736289efbdde07ec55a6442499060f7549a5c417fa7b9979595bebdfa66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db36a86397dcb0a9cb3fc6b168c5504dad9786fc9ea61ee8ac0b3621e5c1619e
[INFO] running `Command { std: "docker" "start" "-a" "db36a86397dcb0a9cb3fc6b168c5504dad9786fc9ea61ee8ac0b3621e5c1619e", kill_on_drop: false }`
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]     Checking hasher v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<[u8; 20], Infallible>
[INFO] [stdout]   --> src/sha1_hasher.rs:27:37
[INFO] [stdout]    |
[INFO] [stdout] 27 |           let fixed_array: [u8; 20] = result
[INFO] [stdout]    |  _____________________________________^
[INFO] [stdout] 28 | |             .try_into()
[INFO] [stdout]    | |_______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<[u8; 32], Infallible>
[INFO] [stdout]   --> src/sha256_hasher.rs:27:37
[INFO] [stdout]    |
[INFO] [stdout] 27 |           let fixed_array: [u8; 32] = result
[INFO] [stdout]    |  _____________________________________^
[INFO] [stdout] 28 | |             .try_into()
[INFO] [stdout]    | |_______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<[u8; 20], Infallible>
[INFO] [stdout]   --> src/sha1_hasher.rs:27:37
[INFO] [stdout]    |
[INFO] [stdout] 27 |           let fixed_array: [u8; 20] = result
[INFO] [stdout]    |  _____________________________________^
[INFO] [stdout] 28 | |             .try_into()
[INFO] [stdout]    | |_______________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<[u8; 32], Infallible>
[INFO] [stdout]   --> src/sha256_hasher.rs:27:37
[INFO] [stdout]    |
[INFO] [stdout] 27 |           let fixed_array: [u8; 32] = result
[INFO] [stdout]    |  _____________________________________^
[INFO] [stdout] 28 | |             .try_into()
[INFO] [stdout]    | |_______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hasher` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `hasher` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "db36a86397dcb0a9cb3fc6b168c5504dad9786fc9ea61ee8ac0b3621e5c1619e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db36a86397dcb0a9cb3fc6b168c5504dad9786fc9ea61ee8ac0b3621e5c1619e", kill_on_drop: false }`
[INFO] [stdout] db36a86397dcb0a9cb3fc6b168c5504dad9786fc9ea61ee8ac0b3621e5c1619e