[INFO] fetching crate constriction 0.4.1...
[INFO] checking constriction-0.4.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate constriction 0.4.1 into /workspace/builds/worker-7-tc2/source
[INFO] removed /workspace/builds/worker-7-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate constriction 0.4.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate constriction 0.4.1
[INFO] tweaked toml for crates.io crate constriction 0.4.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate constriction 0.4.1 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 99 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.7.0)
[INFO] [stderr]       Adding hashbrown v0.15.5 (available: v0.16.0)
[INFO] [stderr]       Adding numpy v0.22.1 (available: v0.27.0)
[INFO] [stderr]       Adding pyo3 v0.22.6 (available: v0.27.1)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_pcg v0.3.1 (available: v0.9.0)
[INFO] [stderr]       Adding rand_xoshiro v0.6.0 (available: v0.7.0)
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 18dcaefd3bf4d7704fa302634ea53ec236d19389b0f8e643b4c309e71fd96381
[INFO] running `Command { std: "docker" "start" "-a" "18dcaefd3bf4d7704fa302634ea53ec236d19389b0f8e643b4c309e71fd96381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18dcaefd3bf4d7704fa302634ea53ec236d19389b0f8e643b4c309e71fd96381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18dcaefd3bf4d7704fa302634ea53ec236d19389b0f8e643b4c309e71fd96381", kill_on_drop: false }`
[INFO] [stdout] 18dcaefd3bf4d7704fa302634ea53ec236d19389b0f8e643b4c309e71fd96381
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 35824a8581c5546a47486b8b98665a843430beaad2847195dce917d95f75f0d7
[INFO] running `Command { std: "docker" "start" "-a" "35824a8581c5546a47486b8b98665a843430beaad2847195dce917d95f75f0d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]     Checking plotters-backend v0.3.7
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking clap_builder v4.5.51
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking special v0.10.3
[INFO] [stderr]     Checking serde_json v1.0.145
[INFO] [stderr]     Checking random v0.13.2
[INFO] [stderr]    Compiling zerocopy-derive v0.8.27
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking is-terminal v0.4.17
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking rayon v1.11.0
[INFO] [stderr]     Checking oorandom v11.1.5
[INFO] [stderr]     Checking probability v0.20.3
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking constriction v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking plotters-svg v0.3.7
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/symbol/huffman.rs:72:37
[INFO] [stdout]    |
[INFO] [stdout] 72 |             .map(|(i, s)| s.map(|s| (Reverse((s, i)))))
[INFO] [stdout]    |                                     ^               ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 72 -             .map(|(i, s)| s.map(|s| (Reverse((s, i)))))
[INFO] [stdout] 72 +             .map(|(i, s)| s.map(|s| Reverse((s, i))))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/symbol/huffman.rs:210:37
[INFO] [stdout]     |
[INFO] [stdout] 210 |             .map(|(i, s)| s.map(|s| (Reverse((s, i)))))
[INFO] [stdout]     |                                     ^               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 210 -             .map(|(i, s)| s.map(|s| (Reverse((s, i)))))
[INFO] [stdout] 210 +             .map(|(i, s)| s.map(|s| Reverse((s, i))))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking rand_pcg v0.3.1
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Word>, Infallible>
[INFO] [stdout]    --> src/backends.rs:482:65
[INFO] [stdout]     |
[INFO] [stdout] 482 |       fn read(&mut self) -> Result<Option<Word>, Self::ReadError> {
[INFO] [stdout]     |  _________________________________________________________________^
[INFO] [stdout] 483 | |         Ok(self.pop())
[INFO] [stdout] 484 | |     }
[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<Option<Word>, Infallible>
[INFO] [stdout]    --> src/backends.rs:483:9
[INFO] [stdout]     |
[INFO] [stdout] 483 |         Ok(self.pop())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<<Array as Array>::Item>, Infallible>
[INFO] [stdout]    --> src/backends.rs:577:72
[INFO] [stdout]     |
[INFO] [stdout] 577 |       fn read(&mut self) -> Result<Option<Array::Item>, Self::ReadError> {
[INFO] [stdout]     |  ________________________________________________________________________^
[INFO] [stdout] 578 | |         Ok(self.pop())
[INFO] [stdout] 579 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<<Array as Array>::Item>, Infallible>
[INFO] [stdout]    --> src/backends.rs:578:9
[INFO] [stdout]     |
[INFO] [stdout] 578 |         Ok(self.pop())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Word>, Infallible>
[INFO] [stdout]     --> src/backends.rs:1469:65
[INFO] [stdout]      |
[INFO] [stdout] 1469 |       fn read(&mut self) -> Result<Option<Word>, Self::ReadError> {
[INFO] [stdout]      |  _________________________________________________________________^
[INFO] [stdout] 1470 | |         if self.pos == 0 {
[INFO] [stdout] 1471 | |             Ok(None)
[INFO] [stdout] 1472 | |         } else {
[INFO] [stdout] ...    |
[INFO] [stdout] 1481 | |     }
[INFO] [stdout]      | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Word>, Infallible>
[INFO] [stdout]     --> src/backends.rs:1470:9
[INFO] [stdout]      |
[INFO] [stdout] 1470 | /         if self.pos == 0 {
[INFO] [stdout] 1471 | |             Ok(None)
[INFO] [stdout] 1472 | |         } else {
[INFO] [stdout] 1473 | |             self.pos -= 1;
[INFO] [stdout] ...    |
[INFO] [stdout] 1480 | |         }
[INFO] [stdout]      | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Word>, Infallible>
[INFO] [stdout]     --> src/backends.rs:1470:26
[INFO] [stdout]      |
[INFO] [stdout] 1470 |           if self.pos == 0 {
[INFO] [stdout]      |  __________________________^
[INFO] [stdout] 1471 | |             Ok(None)
[INFO] [stdout] 1472 | |         } else {
[INFO] [stdout]      | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Word>, Infallible>
[INFO] [stdout]     --> src/backends.rs:1471:13
[INFO] [stdout]      |
[INFO] [stdout] 1471 |             Ok(None)
[INFO] [stdout]      |             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Word>, Infallible>
[INFO] [stdout]     --> src/backends.rs:1472:16
[INFO] [stdout]      |
[INFO] [stdout] 1472 |           } else {
[INFO] [stdout]      |  ________________^
[INFO] [stdout] 1473 | |             self.pos -= 1;
[INFO] [stdout] 1474 | |             unsafe {
[INFO] [stdout] ...    |
[INFO] [stdout] 1480 | |         }
[INFO] [stdout]      | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Word>, Infallible>
[INFO] [stdout]     --> src/backends.rs:1474:13
[INFO] [stdout]      |
[INFO] [stdout] 1474 | /             unsafe {
[INFO] [stdout] ...    |
[INFO] [stdout] 1479 | |             }
[INFO] [stdout]      | |_____________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Word>, Infallible>
[INFO] [stdout]     --> src/backends.rs:1478:17
[INFO] [stdout]      |
[INFO] [stdout] 1478 |                 Ok(Some(self.buf.as_ref().get_unchecked(self.pos).clone()))
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Word>, Infallible>
[INFO] [stdout]     --> src/backends.rs:1493:65
[INFO] [stdout]      |
[INFO] [stdout] 1493 |       fn read(&mut self) -> Result<Option<Word>, Self::ReadError> {
[INFO] [stdout]      |  _________________________________________________________________^
[INFO] [stdout] 1494 | |         let maybe_word = self.buf.as_ref().get(self.pos).cloned();
[INFO] [stdout] 1495 | |         if maybe_word.is_some() {
[INFO] [stdout] 1496 | |             self.pos += 1;
[INFO] [stdout] 1497 | |         }
[INFO] [stdout] 1498 | |         Ok(maybe_word)
[INFO] [stdout] 1499 | |     }
[INFO] [stdout]      | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Word>, Infallible>
[INFO] [stdout]     --> src/backends.rs:1498:9
[INFO] [stdout]      |
[INFO] [stdout] 1498 |         Ok(maybe_word)
[INFO] [stdout]      |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Word>, Infallible>
[INFO] [stdout]     --> src/backends.rs:1732:60
[INFO] [stdout]      |
[INFO] [stdout] 1732 |       fn read(&mut self) -> Result<Option<Word>, Infallible> {
[INFO] [stdout]      |  ____________________________________________________________^
[INFO] [stdout] 1733 | |         Ok(self.inner.next())
[INFO] [stdout] 1734 | |     }
[INFO] [stdout]      | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Word>, Infallible>
[INFO] [stdout]     --> src/backends.rs:1733:9
[INFO] [stdout]      |
[INFO] [stdout] 1733 |         Ok(self.inner.next())
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Word>, Infallible>
[INFO] [stdout]    --> src/stream/queue.rs:242:9
[INFO] [stdout]     |
[INFO] [stdout] 242 |         val.into_compressed().unwrap_infallible()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<RangeDecoder<Word, State, backends::Cursor<Word, EncoderGuard<'_, Word, State>>>, Infallible>
[INFO] [stdout]    --> src/stream/queue.rs:509:9
[INFO] [stdout]     |
[INFO] [stdout] 509 |         RangeDecoder::from_compressed(self.get_compressed()).unwrap_infallible()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Word>, Infallible>
[INFO] [stdout]    --> src/stream/stack.rs:220:9
[INFO] [stdout]     |
[INFO] [stdout] 220 |         val.into_compressed().unwrap_infallible()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AnsCoder<Word, State, backends::Cursor<Word, &[Word]>>, Infallible>
[INFO] [stdout]    --> src/stream/stack.rs:665:9
[INFO] [stdout]     |
[INFO] [stdout] 665 |         Self::from_binary(backends::Cursor::new_at_write_end(data)).unwrap_infallible()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<AnsCoder<Word, State, backends::Reverse<backends::Cursor<Word, Buf>>>, Infallible>
[INFO] [stdout]    --> src/stream/stack.rs:681:9
[INFO] [stdout]     |
[INFO] [stdout] 681 |         Self::from_binary(Reverse(Cursor::new_at_write_beginning(data))).unwrap_infallible()
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<bool>, Infallible>
[INFO] [stdout]    --> src/symbol/mod.rs:281:9
[INFO] [stdout]     |
[INFO] [stdout] 281 |         self.inner.read_bit().expect("The constructor wrote a bit.");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]    --> src/symbol/mod.rs:733:18
[INFO] [stdout]     |
[INFO] [stdout] 733 |             emit(bit.unwrap_infallible())?;
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]    --> src/symbol/mod.rs:748:18
[INFO] [stdout]     |
[INFO] [stdout] 748 |             emit(bit.unwrap_infallible())?;
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `constriction` (lib) due to 25 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<EncoderHuffmanTree, Infallible>
[INFO] [stdout]   --> src/symbol/huffman.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 | /         Self::try_from_probabilities::<_, Infallible, _>(
[INFO] [stdout] 44 | |             probabilities.into_iter().map(|p| Ok(p.borrow().clone())),
[INFO] [stdout] 45 | |         )
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<DecoderHuffmanTree, Infallible>
[INFO] [stdout]    --> src/symbol/huffman.rs:181:9
[INFO] [stdout]     |
[INFO] [stdout] 181 | /         Self::try_from_probabilities::<_, Infallible, _>(
[INFO] [stdout] 182 | |             probabilities.into_iter().map(|p| Ok(p.borrow().clone())),
[INFO] [stdout] 183 | |         )
[INFO] [stdout]     | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "35824a8581c5546a47486b8b98665a843430beaad2847195dce917d95f75f0d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35824a8581c5546a47486b8b98665a843430beaad2847195dce917d95f75f0d7", kill_on_drop: false }`
[INFO] [stdout] 35824a8581c5546a47486b8b98665a843430beaad2847195dce917d95f75f0d7
