[INFO] fetching crate internet-checksum 0.2.1...
[INFO] checking internet-checksum-0.2.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate internet-checksum 0.2.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate internet-checksum 0.2.1
[INFO] finished tweaking crates.io crate internet-checksum 0.2.1
[INFO] tweaked toml for crates.io crate internet-checksum 0.2.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate internet-checksum 0.2.1 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 20 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.6.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_xorshift v0.1.1 (available: v0.4.0)
[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] b24948c66e9a4e325dbc93ee3fab3a19e773939e86fd09c0707bce59d0ffea2b
[INFO] running `Command { std: "docker" "start" "-a" "b24948c66e9a4e325dbc93ee3fab3a19e773939e86fd09c0707bce59d0ffea2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b24948c66e9a4e325dbc93ee3fab3a19e773939e86fd09c0707bce59d0ffea2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b24948c66e9a4e325dbc93ee3fab3a19e773939e86fd09c0707bce59d0ffea2b", kill_on_drop: false }`
[INFO] [stdout] b24948c66e9a4e325dbc93ee3fab3a19e773939e86fd09c0707bce59d0ffea2b
[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] b480a460c2239174add5031ed862af7ddfc2538cc6fe8cfb44fdf148ab032408
[INFO] running `Command { std: "docker" "start" "-a" "b480a460c2239174add5031ed862af7ddfc2538cc6fe8cfb44fdf148ab032408", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking internet-checksum v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stdout] error: this type will no longer be must used: Result<[u8; 2], Infallible>
[INFO] [stdout]    --> src/lib.rs:354:57
[INFO] [stdout]     |
[INFO] [stdout] 354 |                     .overflowing_add($ty::from_ne_bytes($bytes.try_into().unwrap()) as Accumulator);
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 366 |             update_sum_carry!(1, u16, [byte, bytes[0]]);
[INFO] [stdout]     |             ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `update_sum_carry` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr] error: could not compile `internet-checksum` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b480a460c2239174add5031ed862af7ddfc2538cc6fe8cfb44fdf148ab032408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b480a460c2239174add5031ed862af7ddfc2538cc6fe8cfb44fdf148ab032408", kill_on_drop: false }`
[INFO] [stdout] b480a460c2239174add5031ed862af7ddfc2538cc6fe8cfb44fdf148ab032408