[INFO] fetching crate timsort 0.1.3...
[INFO] checking timsort-0.1.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate timsort 0.1.3 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate timsort 0.1.3
[INFO] finished tweaking crates.io crate timsort 0.1.3
[INFO] tweaked toml for crates.io crate timsort 0.1.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate timsort 0.1.3 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e5963611cbac3816ee75689d8d8e03bdafcc65c329749219e9f23b69c7311b55
[INFO] running `Command { std: "docker" "start" "-a" "e5963611cbac3816ee75689d8d8e03bdafcc65c329749219e9f23b69c7311b55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5963611cbac3816ee75689d8d8e03bdafcc65c329749219e9f23b69c7311b55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5963611cbac3816ee75689d8d8e03bdafcc65c329749219e9f23b69c7311b55", kill_on_drop: false }`
[INFO] [stdout] e5963611cbac3816ee75689d8d8e03bdafcc65c329749219e9f23b69c7311b55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 63ec215dabdb70fa2474390e18ab6d53630d4b875a6663e79b3e09232b5aaa99
[INFO] running `Command { std: "docker" "start" "-a" "63ec215dabdb70fa2474390e18ab6d53630d4b875a6663e79b3e09232b5aaa99", kill_on_drop: false }`
[INFO] [stderr]     Checking timsort v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/lib.rs:43:56
[INFO] [stdout]    |
[INFO] [stdout] 43 |     try_sort_by_gt(list, move |a, b| -> NeverResult<_> { Ok(is_greater(a, b)) })
[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<bool, Infallible>
[INFO] [stdout]   --> src/lib.rs:43:58
[INFO] [stdout]    |
[INFO] [stdout] 43 |     try_sort_by_gt(list, move |a, b| -> NeverResult<_> { Ok(is_greater(a, b)) })
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<core::cmp::Ordering, Infallible>
[INFO] [stdout]   --> src/lib.rs:49:53
[INFO] [stdout]    |
[INFO] [stdout] 49 |     try_sort_by(list, move |a, b| -> NeverResult<_> { Ok(cmp(a, b)) }).unwrap_or_else(never)
[INFO] [stdout]    |                                                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<core::cmp::Ordering, Infallible>
[INFO] [stdout]   --> src/lib.rs:49:55
[INFO] [stdout]    |
[INFO] [stdout] 49 |     try_sort_by(list, move |a, b| -> NeverResult<_> { Ok(cmp(a, b)) }).unwrap_or_else(never)
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `timsort` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "63ec215dabdb70fa2474390e18ab6d53630d4b875a6663e79b3e09232b5aaa99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63ec215dabdb70fa2474390e18ab6d53630d4b875a6663e79b3e09232b5aaa99", kill_on_drop: false }`
[INFO] [stdout] 63ec215dabdb70fa2474390e18ab6d53630d4b875a6663e79b3e09232b5aaa99