[INFO] fetching crate osclet 0.1.2...
[INFO] checking osclet-0.1.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate osclet 0.1.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate osclet 0.1.2
[INFO] finished tweaking crates.io crate osclet 0.1.2
[INFO] tweaked toml for crates.io crate osclet 0.1.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate osclet 0.1.2 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 crates.io crate osclet 0.1.2 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 219612b9eb190ee4f35cb69ad55e810da599d98ca05bddad83bb340edb08db89
[INFO] running `Command { std: "docker" "start" "-a" "219612b9eb190ee4f35cb69ad55e810da599d98ca05bddad83bb340edb08db89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "219612b9eb190ee4f35cb69ad55e810da599d98ca05bddad83bb340edb08db89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "219612b9eb190ee4f35cb69ad55e810da599d98ca05bddad83bb340edb08db89", kill_on_drop: false }`
[INFO] [stdout] 219612b9eb190ee4f35cb69ad55e810da599d98ca05bddad83bb340edb08db89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 50a994d72c6b960ffe85368eee49670e3456d622e8f2c3a67aa670f3bd0692d9
[INFO] running `Command { std: "docker" "start" "-a" "50a994d72c6b960ffe85368eee49670e3456d622e8f2c3a67aa670f3bd0692d9", kill_on_drop: false }`
[INFO] [stderr]     Checking osclet v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<&[f32], Infallible>
[INFO] [stdout]    --> src/avx/wavelet_n_taps_f32.rs:472:13
[INFO] [stdout]     |
[INFO] [stdout] 472 | /             DaubechiesFamily::Db6
[INFO] [stdout] 473 | |                 .get_wavelet()
[INFO] [stdout] 474 | |                 .as_ref()
[INFO] [stdout] 475 | |                 .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<&[f32], Infallible>
[INFO] [stdout]    --> src/avx/wavelet_n_taps_f32.rs:556:13
[INFO] [stdout]     |
[INFO] [stdout] 556 | /             DaubechiesFamily::Db6
[INFO] [stdout] 557 | |                 .get_wavelet()
[INFO] [stdout] 558 | |                 .as_ref()
[INFO] [stdout] 559 | |                 .try_into()
[INFO] [stdout]     | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[f64], Infallible>
[INFO] [stdout]    --> src/avx/wavelet_n_taps_f64.rs:369:13
[INFO] [stdout]     |
[INFO] [stdout] 369 | /             DaubechiesFamily::Db6
[INFO] [stdout] 370 | |                 .get_wavelet()
[INFO] [stdout] 371 | |                 .as_ref()
[INFO] [stdout] 372 | |                 .try_into()
[INFO] [stdout]     | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[f64], Infallible>
[INFO] [stdout]    --> src/avx/wavelet_n_taps_f64.rs:451:13
[INFO] [stdout]     |
[INFO] [stdout] 451 | /             DaubechiesFamily::Db6
[INFO] [stdout] 452 | |                 .get_wavelet()
[INFO] [stdout] 453 | |                 .as_ref()
[INFO] [stdout] 454 | |                 .try_into()
[INFO] [stdout]     | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[f64], Infallible>
[INFO] [stdout]    --> src/wavelet_n_taps.rs:240:13
[INFO] [stdout]     |
[INFO] [stdout] 240 | /             DaubechiesFamily::Db6
[INFO] [stdout] 241 | |                 .get_wavelet()
[INFO] [stdout] 242 | |                 .as_ref()
[INFO] [stdout] 243 | |                 .try_into()
[INFO] [stdout]     | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[f64], Infallible>
[INFO] [stdout]    --> src/wavelet_n_taps.rs:322:13
[INFO] [stdout]     |
[INFO] [stdout] 322 | /             DaubechiesFamily::Db6
[INFO] [stdout] 323 | |                 .get_wavelet()
[INFO] [stdout] 324 | |                 .as_ref()
[INFO] [stdout] 325 | |                 .try_into()
[INFO] [stdout]     | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `osclet` (lib test) due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "50a994d72c6b960ffe85368eee49670e3456d622e8f2c3a67aa670f3bd0692d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50a994d72c6b960ffe85368eee49670e3456d622e8f2c3a67aa670f3bd0692d9", kill_on_drop: false }`
[INFO] [stdout] 50a994d72c6b960ffe85368eee49670e3456d622e8f2c3a67aa670f3bd0692d9