[INFO] fetching crate automerge-persistent 0.4.0...
[INFO] checking automerge-persistent-0.4.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate automerge-persistent 0.4.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate automerge-persistent 0.4.0
[INFO] finished tweaking crates.io crate automerge-persistent 0.4.0
[INFO] tweaked toml for crates.io crate automerge-persistent 0.4.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate automerge-persistent 0.4.0 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 51 packages to latest compatible versions
[INFO] [stderr]       Adding automerge v0.4.1 (available: v0.7.1)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b9f3a5bd98f8e50383bb50503cc53306175a0e8fb768fb167f9720947409a3e0
[INFO] running `Command { std: "docker" "start" "-a" "b9f3a5bd98f8e50383bb50503cc53306175a0e8fb768fb167f9720947409a3e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9f3a5bd98f8e50383bb50503cc53306175a0e8fb768fb167f9720947409a3e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9f3a5bd98f8e50383bb50503cc53306175a0e8fb768fb167f9720947409a3e0", kill_on_drop: false }`
[INFO] [stdout] b9f3a5bd98f8e50383bb50503cc53306175a0e8fb768fb167f9720947409a3e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] ba44a2a3903093044920dcdbdaee19265aa7d994fd649f78ab3f343f6db55cbb
[INFO] running `Command { std: "docker" "start" "-a" "ba44a2a3903093044920dcdbdaee19265aa7d994fd649f78ab3f343f6db55cbb", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]     Checking generic-array v0.14.7
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.7
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking uuid v1.18.1
[INFO] [stderr]     Checking smol_str v0.1.24
[INFO] [stderr]     Checking automerge v0.4.1
[INFO] [stderr]     Checking automerge-persistent v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Vec<u8>>, Infallible>
[INFO] [stdout]   --> src/mem.rs:23:64
[INFO] [stdout]    |
[INFO] [stdout] 23 |       fn get_changes(&self) -> Result<Vec<Vec<u8>>, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________________^
[INFO] [stdout] 24 | |         Ok(self.changes.values().cloned().collect())
[INFO] [stdout] 25 | |     }
[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<Vec<Vec<u8>>, Infallible>
[INFO] [stdout]   --> src/mem.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         Ok(self.changes.values().cloned().collect())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Vec<u8>>, Infallible>
[INFO] [stdout]   --> src/mem.rs:49:68
[INFO] [stdout]    |
[INFO] [stdout] 49 |       fn get_document(&self) -> Result<Option<Vec<u8>>, Self::Error> {
[INFO] [stdout]    |  ____________________________________________________________________^
[INFO] [stdout] 50 | |         Ok(self.document.clone())
[INFO] [stdout] 51 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Vec<u8>>, Infallible>
[INFO] [stdout]   --> src/mem.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         Ok(self.document.clone())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Vec<u8>>, Infallible>
[INFO] [stdout]   --> src/mem.rs:60:86
[INFO] [stdout]    |
[INFO] [stdout] 60 |       fn get_sync_state(&self, peer_id: &[u8]) -> Result<Option<Vec<u8>>, Self::Error> {
[INFO] [stdout]    |  ______________________________________________________________________________________^
[INFO] [stdout] 61 | |         Ok(self.sync_states.get(peer_id).cloned())
[INFO] [stdout] 62 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Vec<u8>>, Infallible>
[INFO] [stdout]   --> src/mem.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         Ok(self.sync_states.get(peer_id).cloned())
[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/mem.rs:81:65
[INFO] [stdout]    |
[INFO] [stdout] 81 |       fn get_peer_ids(&self) -> Result<Vec<Vec<u8>>, Self::Error> {
[INFO] [stdout]    |  _________________________________________________________________^
[INFO] [stdout] 82 | |         Ok(self.sync_states.keys().cloned().collect())
[INFO] [stdout] 83 | |     }
[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/mem.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         Ok(self.sync_states.keys().cloned().collect())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/mem.rs:89:55
[INFO] [stdout]    |
[INFO] [stdout] 89 |       fn flush(&mut self) -> Result<usize, Self::Error> {
[INFO] [stdout]    |  _______________________________________________________^
[INFO] [stdout] 90 | |         Ok(0)
[INFO] [stdout] 91 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/mem.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |         Ok(0)
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `automerge-persistent` (lib test) due to 10 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<Vec<u8>>, Infallible>
[INFO] [stdout]   --> src/mem.rs:23:64
[INFO] [stdout]    |
[INFO] [stdout] 23 |       fn get_changes(&self) -> Result<Vec<Vec<u8>>, Self::Error> {
[INFO] [stdout]    |  ________________________________________________________________^
[INFO] [stdout] 24 | |         Ok(self.changes.values().cloned().collect())
[INFO] [stdout] 25 | |     }
[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<Vec<Vec<u8>>, Infallible>
[INFO] [stdout]   --> src/mem.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         Ok(self.changes.values().cloned().collect())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Vec<u8>>, Infallible>
[INFO] [stdout]   --> src/mem.rs:49:68
[INFO] [stdout]    |
[INFO] [stdout] 49 |       fn get_document(&self) -> Result<Option<Vec<u8>>, Self::Error> {
[INFO] [stdout]    |  ____________________________________________________________________^
[INFO] [stdout] 50 | |         Ok(self.document.clone())
[INFO] [stdout] 51 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Vec<u8>>, Infallible>
[INFO] [stdout]   --> src/mem.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         Ok(self.document.clone())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Vec<u8>>, Infallible>
[INFO] [stdout]   --> src/mem.rs:60:86
[INFO] [stdout]    |
[INFO] [stdout] 60 |       fn get_sync_state(&self, peer_id: &[u8]) -> Result<Option<Vec<u8>>, Self::Error> {
[INFO] [stdout]    |  ______________________________________________________________________________________^
[INFO] [stdout] 61 | |         Ok(self.sync_states.get(peer_id).cloned())
[INFO] [stdout] 62 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<Vec<u8>>, Infallible>
[INFO] [stdout]   --> src/mem.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         Ok(self.sync_states.get(peer_id).cloned())
[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/mem.rs:81:65
[INFO] [stdout]    |
[INFO] [stdout] 81 |       fn get_peer_ids(&self) -> Result<Vec<Vec<u8>>, Self::Error> {
[INFO] [stdout]    |  _________________________________________________________________^
[INFO] [stdout] 82 | |         Ok(self.sync_states.keys().cloned().collect())
[INFO] [stdout] 83 | |     }
[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/mem.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         Ok(self.sync_states.keys().cloned().collect())
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/mem.rs:89:55
[INFO] [stdout]    |
[INFO] [stdout] 89 |       fn flush(&mut self) -> Result<usize, Self::Error> {
[INFO] [stdout]    |  _______________________________________________________^
[INFO] [stdout] 90 | |         Ok(0)
[INFO] [stdout] 91 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/mem.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |         Ok(0)
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `automerge-persistent` (lib) due to 10 previous errors
[INFO] running `Command { std: "docker" "inspect" "ba44a2a3903093044920dcdbdaee19265aa7d994fd649f78ab3f343f6db55cbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba44a2a3903093044920dcdbdaee19265aa7d994fd649f78ab3f343f6db55cbb", kill_on_drop: false }`
[INFO] [stdout] ba44a2a3903093044920dcdbdaee19265aa7d994fd649f78ab3f343f6db55cbb
