[INFO] fetching crate lzss 0.9.1...
[INFO] checking lzss-0.9.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate lzss 0.9.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate lzss 0.9.1
[INFO] finished tweaking crates.io crate lzss 0.9.1
[INFO] tweaked toml for crates.io crate lzss 0.9.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lzss 0.9.1 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 70 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.4.0 (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-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] bd67720ff0278a90f0685bdc99b39166f1d9eff6026794a8ddfb17c6393dcf8f
[INFO] running `Command { std: "docker" "start" "-a" "bd67720ff0278a90f0685bdc99b39166f1d9eff6026794a8ddfb17c6393dcf8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd67720ff0278a90f0685bdc99b39166f1d9eff6026794a8ddfb17c6393dcf8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd67720ff0278a90f0685bdc99b39166f1d9eff6026794a8ddfb17c6393dcf8f", kill_on_drop: false }`
[INFO] [stdout] bd67720ff0278a90f0685bdc99b39166f1d9eff6026794a8ddfb17c6393dcf8f
[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] 2bccc347cc0286bda0a7f5abb0c46127bda095b68653417b952215ca7bf8da63
[INFO] running `Command { std: "docker" "start" "-a" "2bccc347cc0286bda0a7f5abb0c46127bda095b68653417b952215ca7bf8da63", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]     Checking indexmap v1.9.3
[INFO] [stderr]     Checking textwrap v0.16.2
[INFO] [stderr]    Compiling lzss v0.9.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/bits.rs:11:31
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub(crate) fn new(reader: &mut R) -> BitReader<R> {
[INFO] [stdout]    |                               ^^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub(crate) fn new(reader: &mut R) -> BitReader<'_, R> {
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/bits.rs:43:31
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub(crate) fn new(writer: &mut W) -> BitWriter<W> {
[INFO] [stdout]    |                               ^^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub(crate) fn new(writer: &mut W) -> BitWriter<'_, W> {
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<u8>, Void>
[INFO] [stdout]   --> src/slice_safe.rs:32:59
[INFO] [stdout]    |
[INFO] [stdout] 32 |       fn read(&mut self) -> Result<Option<u8>, Self::Error> {
[INFO] [stdout]    |  ___________________________________________________________^
[INFO] [stdout] 33 | |         if let Some((&first, rest)) = self.data.split_first() {
[INFO] [stdout] 34 | |             self.data = rest;
[INFO] [stdout] 35 | |             Ok(Some(first))
[INFO] [stdout] ...  |
[INFO] [stdout] 39 | |     }
[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<u8>, Void>
[INFO] [stdout]   --> src/slice_safe.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 | /         if let Some((&first, rest)) = self.data.split_first() {
[INFO] [stdout] 34 | |             self.data = rest;
[INFO] [stdout] 35 | |             Ok(Some(first))
[INFO] [stdout] 36 | |         } else {
[INFO] [stdout] 37 | |             Ok(None)
[INFO] [stdout] 38 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<u8>, Void>
[INFO] [stdout]   --> src/slice_safe.rs:33:63
[INFO] [stdout]    |
[INFO] [stdout] 33 |           if let Some((&first, rest)) = self.data.split_first() {
[INFO] [stdout]    |  _______________________________________________________________^
[INFO] [stdout] 34 | |             self.data = rest;
[INFO] [stdout] 35 | |             Ok(Some(first))
[INFO] [stdout] 36 | |         } else {
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<u8>, Void>
[INFO] [stdout]   --> src/slice_safe.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Ok(Some(first))
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<u8>, Void>
[INFO] [stdout]   --> src/slice_safe.rs:36:16
[INFO] [stdout]    |
[INFO] [stdout] 36 |           } else {
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 37 | |             Ok(None)
[INFO] [stdout] 38 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<u8>, Void>
[INFO] [stdout]   --> src/slice_safe.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |             Ok(None)
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<u8>, Void>
[INFO] [stdout]   --> src/vec.rs:36:58
[INFO] [stdout]    |
[INFO] [stdout] 36 |       fn finish(self) -> Result<Self::Output, Self::Error> {
[INFO] [stdout]    |  __________________________________________________________^
[INFO] [stdout] 37 | |         Ok(self.0)
[INFO] [stdout] 38 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<u8>, Void>
[INFO] [stdout]   --> src/vec.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |         Ok(self.0)
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lzss` (lib) due to 8 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2bccc347cc0286bda0a7f5abb0c46127bda095b68653417b952215ca7bf8da63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bccc347cc0286bda0a7f5abb0c46127bda095b68653417b952215ca7bf8da63", kill_on_drop: false }`
[INFO] [stdout] 2bccc347cc0286bda0a7f5abb0c46127bda095b68653417b952215ca7bf8da63
