[INFO] fetching crate hxd 0.1.3...
[INFO] checking hxd-0.1.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate hxd 0.1.3 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate hxd 0.1.3
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate hxd 0.1.3
[INFO] tweaked toml for crates.io crate hxd 0.1.3 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate hxd 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] crate crates.io crate hxd 0.1.3 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] a4e27e870ea1a90fa7bc4215272d0ed28ff0af778674694909807cf1a47af600
[INFO] running `Command { std: "docker" "start" "-a" "a4e27e870ea1a90fa7bc4215272d0ed28ff0af778674694909807cf1a47af600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4e27e870ea1a90fa7bc4215272d0ed28ff0af778674694909807cf1a47af600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4e27e870ea1a90fa7bc4215272d0ed28ff0af778674694909807cf1a47af600", kill_on_drop: false }`
[INFO] [stdout] a4e27e870ea1a90fa7bc4215272d0ed28ff0af778674694909807cf1a47af600
[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] 090a298551240826906fbc0de45049da221d49d2c134f1e4faa2cfa58a872b34
[INFO] running `Command { std: "docker" "start" "-a" "090a298551240826906fbc0de45049da221d49d2c134f1e4faa2cfa58a872b34", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.97
[INFO] [stderr]     Checking console v0.15.11
[INFO] [stderr]     Checking hxd v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking similar v2.7.0
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]   --> src/reader.rs:30:88
[INFO] [stdout]    |
[INFO] [stdout] 30 |       fn next_n<'buf>(&mut self, buf: &'buf mut [u8]) -> Result<&'buf [u8], Self::Error> {
[INFO] [stdout]    |  ________________________________________________________________________________________^
[INFO] [stdout] 31 | |         if self.index >= self.slice.len() {
[INFO] [stdout] 32 | |             return Ok(&[]);
[INFO] [stdout] ...  |
[INFO] [stdout] 37 | |         Ok(&buf[..end])
[INFO] [stdout] 38 | |     }
[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<&[u8], Infallible>
[INFO] [stdout]   --> src/reader.rs:32:20
[INFO] [stdout]    |
[INFO] [stdout] 32 |             return Ok(&[]);
[INFO] [stdout]    |                    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]   --> src/reader.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         Ok(&buf[..end])
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/reader.rs:40:66
[INFO] [stdout]    |
[INFO] [stdout] 40 |       fn skip_n(&mut self, n: usize) -> Result<usize, Self::Error> {
[INFO] [stdout]    |  __________________________________________________________________^
[INFO] [stdout] 41 | |         self.index += n;
[INFO] [stdout] 42 | |         Ok(self.index)
[INFO] [stdout] 43 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/reader.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         Ok(self.index)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/reader.rs:158:88
[INFO] [stdout]     |
[INFO] [stdout] 158 |       fn next_n<'buf>(&mut self, buf: &'buf mut [u8]) -> Result<&'buf [u8], Self::Error> {
[INFO] [stdout]     |  ________________________________________________________________________________________^
[INFO] [stdout] 159 | |         Ok(self.next_bytes(buf))
[INFO] [stdout] 160 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/reader.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |         Ok(self.next_bytes(buf))
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/reader.rs:162:66
[INFO] [stdout]     |
[INFO] [stdout] 162 |       fn skip_n(&mut self, n: usize) -> Result<usize, Self::Error> {
[INFO] [stdout]     |  __________________________________________________________________^
[INFO] [stdout] 163 | |         self.advance_indices_by(n);
[INFO] [stdout] 164 | |         Ok(n)
[INFO] [stdout] 165 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/reader.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 164 |         Ok(n)
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/reader.rs:290:88
[INFO] [stdout]     |
[INFO] [stdout] 290 |       fn next_n<'buf>(&mut self, buf: &'buf mut [u8]) -> Result<&'buf [u8], Self::Error> {
[INFO] [stdout]     |  ________________________________________________________________________________________^
[INFO] [stdout] 291 | |         let mut i = 0usize;
[INFO] [stdout] 292 | |         while i < buf.len() {
[INFO] [stdout] 293 | |             match self.iterator.next() {
[INFO] [stdout] ...   |
[INFO] [stdout] 303 | |         Ok(&buf[..i])
[INFO] [stdout] 304 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/reader.rs:298:28
[INFO] [stdout]     |
[INFO] [stdout] 298 |                     return Ok(&buf[..i]);
[INFO] [stdout]     |                            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/reader.rs:303:9
[INFO] [stdout]     |
[INFO] [stdout] 303 |         Ok(&buf[..i])
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/reader.rs:306:66
[INFO] [stdout]     |
[INFO] [stdout] 306 |       fn skip_n(&mut self, n: usize) -> Result<usize, Self::Error> {
[INFO] [stdout]     |  __________________________________________________________________^
[INFO] [stdout] 307 | |         for i in 0..n {
[INFO] [stdout] 308 | |             if let None = self.iterator.next() {
[INFO] [stdout] 309 | |                 return Ok(i);
[INFO] [stdout] ...   |
[INFO] [stdout] 312 | |         Ok(n)
[INFO] [stdout] 313 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/reader.rs:309:24
[INFO] [stdout]     |
[INFO] [stdout] 309 |                 return Ok(i);
[INFO] [stdout]     |                        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/reader.rs:312:9
[INFO] [stdout]     |
[INFO] [stdout] 312 |         Ok(n)
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/reader.rs:350:88
[INFO] [stdout]     |
[INFO] [stdout] 350 |       fn next_n<'buf>(&mut self, buf: &'buf mut [u8]) -> Result<&'buf [u8], Self::Error> {
[INFO] [stdout]     |  ________________________________________________________________________________________^
[INFO] [stdout] 351 | |         let mut i = 0usize;
[INFO] [stdout] 352 | |         while i < buf.len() {
[INFO] [stdout] 353 | |             if let Some(b) = self.next_byte() {
[INFO] [stdout] ...   |
[INFO] [stdout] 360 | |         Ok(&buf[..i])
[INFO] [stdout] 361 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/reader.rs:357:24
[INFO] [stdout]     |
[INFO] [stdout] 357 |                 return Ok(&buf[..i]);
[INFO] [stdout]     |                        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/reader.rs:360:9
[INFO] [stdout]     |
[INFO] [stdout] 360 |         Ok(&buf[..i])
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/reader.rs:363:66
[INFO] [stdout]     |
[INFO] [stdout] 363 |       fn skip_n(&mut self, n: usize) -> Result<usize, Self::Error> {
[INFO] [stdout]     |  __________________________________________________________________^
[INFO] [stdout] 364 | |         for _ in 0..n {
[INFO] [stdout] 365 | |             if self.next_byte().is_none() {
[INFO] [stdout] 366 | |                 return Ok(n);
[INFO] [stdout] ...   |
[INFO] [stdout] 369 | |         Ok(n)
[INFO] [stdout] 370 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/reader.rs:366:24
[INFO] [stdout]     |
[INFO] [stdout] 366 |                 return Ok(n);
[INFO] [stdout]     |                        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/reader.rs:369:9
[INFO] [stdout]     |
[INFO] [stdout] 369 |         Ok(n)
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/reader.rs:402:82
[INFO] [stdout]     |
[INFO] [stdout] 402 |       fn next_n<'a>(&mut self, buf: &'a mut [u8]) -> Result<&'a [u8], Self::Error> {
[INFO] [stdout]     |  __________________________________________________________________________________^
[INFO] [stdout] 403 | |         let mut i = 0;
[INFO] [stdout] 404 | |         while i < buf.len() {
[INFO] [stdout] 405 | |             match self.next() {
[INFO] [stdout] ...   |
[INFO] [stdout] 415 | |         Ok(&buf[..i])
[INFO] [stdout] 416 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/reader.rs:415:9
[INFO] [stdout]     |
[INFO] [stdout] 415 |         Ok(&buf[..i])
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/reader.rs:418:66
[INFO] [stdout]     |
[INFO] [stdout] 418 |       fn skip_n(&mut self, n: usize) -> Result<usize, Self::Error> {
[INFO] [stdout]     |  __________________________________________________________________^
[INFO] [stdout] 419 | |         for i in 0..n {
[INFO] [stdout] 420 | |             match self.next() {
[INFO] [stdout] 421 | |                 Some(_) => {}
[INFO] [stdout] ...   |
[INFO] [stdout] 427 | |         Ok(n)
[INFO] [stdout] 428 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/reader.rs:423:28
[INFO] [stdout]     |
[INFO] [stdout] 423 |                     return Ok(i);
[INFO] [stdout]     |                            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/reader.rs:427:9
[INFO] [stdout]     |
[INFO] [stdout] 427 |         Ok(n)
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/writer.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |         r.unwrap()
[INFO] [stdout]    |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<String>, Infallible>
[INFO] [stdout]    --> src/writer.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 112 |         r.unwrap()
[INFO] [stdout]     |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<u8>, Infallible>
[INFO] [stdout]    --> src/writer.rs:126:9
[INFO] [stdout]     |
[INFO] [stdout] 126 |         r.unwrap()
[INFO] [stdout]     |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Vec<u8>>, Infallible>
[INFO] [stdout]    --> src/writer.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 153 |         r.unwrap()
[INFO] [stdout]     |         ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hxd` (lib) due to 30 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "090a298551240826906fbc0de45049da221d49d2c134f1e4faa2cfa58a872b34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "090a298551240826906fbc0de45049da221d49d2c134f1e4faa2cfa58a872b34", kill_on_drop: false }`
[INFO] [stdout] 090a298551240826906fbc0de45049da221d49d2c134f1e4faa2cfa58a872b34
