[INFO] fetching crate pre-rfc3243-libtw2-common 0.1.0...
[INFO] checking pre-rfc3243-libtw2-common-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate pre-rfc3243-libtw2-common 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate pre-rfc3243-libtw2-common 0.1.0
[INFO] finished tweaking crates.io crate pre-rfc3243-libtw2-common 0.1.0
[INFO] tweaked toml for crates.io crate pre-rfc3243-libtw2-common 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pre-rfc3243-libtw2-common 0.1.0 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 37 packages to latest compatible versions
[INFO] [stderr]       Adding arrayvec v0.5.2 (available: v0.7.6)
[INFO] [stderr]       Adding quickcheck v0.4.1 (available: v1.0.3)
[INFO] [stderr]       Adding zerocopy v0.7.35 (available: v0.8.27)
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e92530a89d148bee73bd39a6b655a884d99e3a2e1d5c60249e7adfa2fa9ac24e
[INFO] running `Command { std: "docker" "start" "-a" "e92530a89d148bee73bd39a6b655a884d99e3a2e1d5c60249e7adfa2fa9ac24e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e92530a89d148bee73bd39a6b655a884d99e3a2e1d5c60249e7adfa2fa9ac24e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e92530a89d148bee73bd39a6b655a884d99e3a2e1d5c60249e7adfa2fa9ac24e", kill_on_drop: false }`
[INFO] [stdout] e92530a89d148bee73bd39a6b655a884d99e3a2e1d5c60249e7adfa2fa9ac24e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f4f981461369c3af9a56d807529a87ef0f9b5a6cc569e7a0057a835222784f7b
[INFO] running `Command { std: "docker" "start" "-a" "f4f981461369c3af9a56d807529a87ef0f9b5a6cc569e7a0057a835222784f7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking bencher v0.1.5
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking pre-rfc3243-libtw2-common v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<i8, Infallible>
[INFO] [stdout]   --> src/num/cast.rs:78:35
[INFO] [stdout]    |
[INFO] [stdout] 78 |     #[inline] fn i8(self) -> i8 { self.try_into().ok().unwrap() }
[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<i16, Infallible>
[INFO] [stdout]   --> src/num/cast.rs:80:37
[INFO] [stdout]    |
[INFO] [stdout] 80 |     #[inline] fn i16(self) -> i16 { self.try_into().ok().unwrap() }
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]   --> src/num/cast.rs:82:37
[INFO] [stdout]    |
[INFO] [stdout] 82 |     #[inline] fn i32(self) -> i32 { self.try_into().ok().unwrap() }
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]   --> src/num/cast.rs:84:37
[INFO] [stdout]    |
[INFO] [stdout] 84 |     #[inline] fn i64(self) -> i64 { self.try_into().ok().unwrap() }
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]   --> src/num/cast.rs:86:41
[INFO] [stdout]    |
[INFO] [stdout] 86 |     #[inline] fn isize(self) -> isize { self.try_into().ok().unwrap() }
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:112:35
[INFO] [stdout]     |
[INFO] [stdout] 112 |     #[inline] fn u8(self) -> u8 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i16, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:113:37
[INFO] [stdout]     |
[INFO] [stdout] 113 |     #[inline] fn i16(self) -> i16 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u16, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:114:37
[INFO] [stdout]     |
[INFO] [stdout] 114 |     #[inline] fn u16(self) -> u16 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:115:37
[INFO] [stdout]     |
[INFO] [stdout] 115 |     #[inline] fn i32(self) -> i32 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:116:37
[INFO] [stdout]     |
[INFO] [stdout] 116 |     #[inline] fn u32(self) -> u32 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:117:37
[INFO] [stdout]     |
[INFO] [stdout] 117 |     #[inline] fn i64(self) -> i64 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:118:37
[INFO] [stdout]     |
[INFO] [stdout] 118 |     #[inline] fn u64(self) -> u64 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:119:41
[INFO] [stdout]     |
[INFO] [stdout] 119 |     #[inline] fn isize(self) -> isize { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:120:41
[INFO] [stdout]     |
[INFO] [stdout] 120 |     #[inline] fn usize(self) -> usize { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i16, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:146:37
[INFO] [stdout]     |
[INFO] [stdout] 146 |     #[inline] fn i16(self) -> i16 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:148:37
[INFO] [stdout]     |
[INFO] [stdout] 148 |     #[inline] fn i32(self) -> i32 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:150:37
[INFO] [stdout]     |
[INFO] [stdout] 150 |     #[inline] fn i64(self) -> i64 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:152:41
[INFO] [stdout]     |
[INFO] [stdout] 152 |     #[inline] fn isize(self) -> isize { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u16, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:180:37
[INFO] [stdout]     |
[INFO] [stdout] 180 |     #[inline] fn u16(self) -> u16 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:181:37
[INFO] [stdout]     |
[INFO] [stdout] 181 |     #[inline] fn i32(self) -> i32 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:182:37
[INFO] [stdout]     |
[INFO] [stdout] 182 |     #[inline] fn u32(self) -> u32 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:183:37
[INFO] [stdout]     |
[INFO] [stdout] 183 |     #[inline] fn i64(self) -> i64 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:184:37
[INFO] [stdout]     |
[INFO] [stdout] 184 |     #[inline] fn u64(self) -> u64 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:186:41
[INFO] [stdout]     |
[INFO] [stdout] 186 |     #[inline] fn usize(self) -> usize { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:214:37
[INFO] [stdout]     |
[INFO] [stdout] 214 |     #[inline] fn i32(self) -> i32 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:216:37
[INFO] [stdout]     |
[INFO] [stdout] 216 |     #[inline] fn i64(self) -> i64 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:248:37
[INFO] [stdout]     |
[INFO] [stdout] 248 |     #[inline] fn u32(self) -> u32 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:249:37
[INFO] [stdout]     |
[INFO] [stdout] 249 |     #[inline] fn i64(self) -> i64 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:250:37
[INFO] [stdout]     |
[INFO] [stdout] 250 |     #[inline] fn u64(self) -> u64 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i64, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:282:37
[INFO] [stdout]     |
[INFO] [stdout] 282 |     #[inline] fn i64(self) -> i64 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:316:37
[INFO] [stdout]     |
[INFO] [stdout] 316 |     #[inline] fn u64(self) -> u64 { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:350:41
[INFO] [stdout]     |
[INFO] [stdout] 350 |     #[inline] fn isize(self) -> isize { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/num/cast.rs:384:41
[INFO] [stdout]     |
[INFO] [stdout] 384 |     #[inline] fn usize(self) -> usize { self.try_into().ok().unwrap() }
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pre-rfc3243-libtw2-common` (lib) due to 33 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f4f981461369c3af9a56d807529a87ef0f9b5a6cc569e7a0057a835222784f7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4f981461369c3af9a56d807529a87ef0f9b5a6cc569e7a0057a835222784f7b", kill_on_drop: false }`
[INFO] [stdout] f4f981461369c3af9a56d807529a87ef0f9b5a6cc569e7a0057a835222784f7b