[INFO] fetching crate rayoff 0.0.2...
[INFO] checking rayoff-0.0.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rayoff 0.0.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate rayoff 0.0.2
[INFO] finished tweaking crates.io crate rayoff 0.0.2
[INFO] tweaked toml for crates.io crate rayoff 0.0.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rayoff 0.0.2 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] 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] 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] 87e5277b296faea9e59395c3723cbd26e4bc1294ab7f39382fad03813943da7c
[INFO] running `Command { std: "docker" "start" "-a" "87e5277b296faea9e59395c3723cbd26e4bc1294ab7f39382fad03813943da7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87e5277b296faea9e59395c3723cbd26e4bc1294ab7f39382fad03813943da7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87e5277b296faea9e59395c3723cbd26e4bc1294ab7f39382fad03813943da7c", kill_on_drop: false }`
[INFO] [stdout] 87e5277b296faea9e59395c3723cbd26e4bc1294ab7f39382fad03813943da7c
[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] 8092b0c08798475ae62c97381bdfa7efb3ad14e3df9b105154366f008fec2fa5
[INFO] running `Command { std: "docker" "start" "-a" "8092b0c08798475ae62c97381bdfa7efb3ad14e3df9b105154366f008fec2fa5", kill_on_drop: false }`
[INFO] [stderr]     Checking rayoff v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `thread_spawn_unchecked` has been stable since 1.82.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(thread_spawn_unchecked)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `slice_split_at_unchecked` has been stable since 1.79.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(slice_split_at_unchecked)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `thread_spawn_unchecked` has been stable since 1.82.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(thread_spawn_unchecked)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `slice_split_at_unchecked` has been stable since 1.79.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(slice_split_at_unchecked)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/iter/range.rs:47:40
[INFO] [stdout]     |
[INFO] [stdout]  47 |                       if let Some(len) = usize::try_from(len).ok() {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  84 | / impl_exclusive! {
[INFO] [stdout]  85 | |     ChunkedRangeU8, u8, u8
[INFO] [stdout]  86 | |     ChunkedRangeU16, u16, u16
[INFO] [stdout]  87 | |     ChunkedRangeU32, u32, u32
[INFO] [stdout] ...   |
[INFO] [stdout] 102 | | }
[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 `impl_exclusive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/iter/range.rs:62:29
[INFO] [stdout]     |
[INFO] [stdout]  62 |                       let n = <$t>::try_from(n).expect(concat!("number of chunks must fit in a ", stringify!($t))) as $wide;
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  84 | / impl_exclusive! {
[INFO] [stdout]  85 | |     ChunkedRangeU8, u8, u8
[INFO] [stdout]  86 | |     ChunkedRangeU16, u16, u16
[INFO] [stdout]  87 | |     ChunkedRangeU32, u32, u32
[INFO] [stdout] ...   |
[INFO] [stdout] 102 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_exclusive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/iter/inclusive.rs:48:40
[INFO] [stdout]     |
[INFO] [stdout]  48 |                       if let Some(len) = usize::try_from(len).ok() {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  88 | / impl_inclusive! {
[INFO] [stdout]  89 | |     ChunkedRangeInclusiveU8, u8, u16
[INFO] [stdout]  90 | |     ChunkedRangeInclusiveU16, u16, u32
[INFO] [stdout]  91 | |     ChunkedRangeInclusiveU32, u32, u64
[INFO] [stdout] ...   |
[INFO] [stdout] 110 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_inclusive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/iter/inclusive.rs:63:29
[INFO] [stdout]     |
[INFO] [stdout]  63 |                       let n = <$t>::try_from(n).expect(concat!("number of chunks must fit in a ", stringify!($t))) as $wide;
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  88 | / impl_inclusive! {
[INFO] [stdout]  89 | |     ChunkedRangeInclusiveU8, u8, u16
[INFO] [stdout]  90 | |     ChunkedRangeInclusiveU16, u16, u32
[INFO] [stdout]  91 | |     ChunkedRangeInclusiveU32, u32, u64
[INFO] [stdout] ...   |
[INFO] [stdout] 110 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_inclusive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rayoff` (lib test) due to 4 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/iter/range.rs:47:40
[INFO] [stdout]     |
[INFO] [stdout]  47 |                       if let Some(len) = usize::try_from(len).ok() {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  84 | / impl_exclusive! {
[INFO] [stdout]  85 | |     ChunkedRangeU8, u8, u8
[INFO] [stdout]  86 | |     ChunkedRangeU16, u16, u16
[INFO] [stdout]  87 | |     ChunkedRangeU32, u32, u32
[INFO] [stdout] ...   |
[INFO] [stdout] 102 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `impl_exclusive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/iter/range.rs:62:29
[INFO] [stdout]     |
[INFO] [stdout]  62 |                       let n = <$t>::try_from(n).expect(concat!("number of chunks must fit in a ", stringify!($t))) as $wide;
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  84 | / impl_exclusive! {
[INFO] [stdout]  85 | |     ChunkedRangeU8, u8, u8
[INFO] [stdout]  86 | |     ChunkedRangeU16, u16, u16
[INFO] [stdout]  87 | |     ChunkedRangeU32, u32, u32
[INFO] [stdout] ...   |
[INFO] [stdout] 102 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_exclusive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/iter/inclusive.rs:48:40
[INFO] [stdout]     |
[INFO] [stdout]  48 |                       if let Some(len) = usize::try_from(len).ok() {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  88 | / impl_inclusive! {
[INFO] [stdout]  89 | |     ChunkedRangeInclusiveU8, u8, u16
[INFO] [stdout]  90 | |     ChunkedRangeInclusiveU16, u16, u32
[INFO] [stdout]  91 | |     ChunkedRangeInclusiveU32, u32, u64
[INFO] [stdout] ...   |
[INFO] [stdout] 110 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_inclusive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/iter/inclusive.rs:63:29
[INFO] [stdout]     |
[INFO] [stdout]  63 |                       let n = <$t>::try_from(n).expect(concat!("number of chunks must fit in a ", stringify!($t))) as $wide;
[INFO] [stdout]     |                               ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  88 | / impl_inclusive! {
[INFO] [stdout]  89 | |     ChunkedRangeInclusiveU8, u8, u16
[INFO] [stdout]  90 | |     ChunkedRangeInclusiveU16, u16, u32
[INFO] [stdout]  91 | |     ChunkedRangeInclusiveU32, u32, u64
[INFO] [stdout] ...   |
[INFO] [stdout] 110 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_inclusive` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rayoff` (lib) due to 4 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "8092b0c08798475ae62c97381bdfa7efb3ad14e3df9b105154366f008fec2fa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8092b0c08798475ae62c97381bdfa7efb3ad14e3df9b105154366f008fec2fa5", kill_on_drop: false }`
[INFO] [stdout] 8092b0c08798475ae62c97381bdfa7efb3ad14e3df9b105154366f008fec2fa5