[INFO] fetching crate rusb-async 0.0.1-alpha...
[INFO] checking rusb-async-0.0.1-alpha against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rusb-async 0.0.1-alpha into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate rusb-async 0.0.1-alpha
[INFO] finished tweaking crates.io crate rusb-async 0.0.1-alpha
[INFO] tweaked toml for crates.io crate rusb-async 0.0.1-alpha written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rusb-async 0.0.1-alpha 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 rusb-async 0.0.1-alpha 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 889e1799aa32117bd1b3ed5568f11b87773a6bcc1938bb89ed707d65a40c6553
[INFO] running `Command { std: "docker" "start" "-a" "889e1799aa32117bd1b3ed5568f11b87773a6bcc1938bb89ed707d65a40c6553", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "889e1799aa32117bd1b3ed5568f11b87773a6bcc1938bb89ed707d65a40c6553", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "889e1799aa32117bd1b3ed5568f11b87773a6bcc1938bb89ed707d65a40c6553", kill_on_drop: false }`
[INFO] [stdout] 889e1799aa32117bd1b3ed5568f11b87773a6bcc1938bb89ed707d65a40c6553
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 27fbb379f0fd254a8172aa8f48b6fe3f2afc9f088f5ab99293328a2d5bdb01c4
[INFO] running `Command { std: "docker" "start" "-a" "27fbb379f0fd254a8172aa8f48b6fe3f2afc9f088f5ab99293328a2d5bdb01c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling rusb v0.9.1
[INFO] [stderr]    Compiling libusb1-sys v0.6.4
[INFO] [stderr]     Checking rusb-async v0.0.1-alpha (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<i64, Infallible>
[INFO] [stdout]    --> src/pool.rs:152:22
[INFO] [stdout]     |
[INFO] [stdout] 152 |             tv_usec: remaining.subsec_micros().try_into().unwrap(),
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusb-async` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<i64, Infallible>
[INFO] [stdout]    --> src/pool.rs:152:22
[INFO] [stdout]     |
[INFO] [stdout] 152 |             tv_usec: remaining.subsec_micros().try_into().unwrap(),
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusb-async` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "27fbb379f0fd254a8172aa8f48b6fe3f2afc9f088f5ab99293328a2d5bdb01c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27fbb379f0fd254a8172aa8f48b6fe3f2afc9f088f5ab99293328a2d5bdb01c4", kill_on_drop: false }`
[INFO] [stdout] 27fbb379f0fd254a8172aa8f48b6fe3f2afc9f088f5ab99293328a2d5bdb01c4