[INFO] fetching crate ipc-rpc 2.0.0...
[INFO] checking ipc-rpc-2.0.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate ipc-rpc 2.0.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate ipc-rpc 2.0.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate ipc-rpc 2.0.0
[INFO] tweaked toml for crates.io crate ipc-rpc 2.0.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ipc-rpc 2.0.0 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] crate crates.io crate ipc-rpc 2.0.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] 0b9804c71b15a1ff6a0ad58d98e6738806c1e89c645b86156727bf789b8bd255
[INFO] running `Command { std: "docker" "start" "-a" "0b9804c71b15a1ff6a0ad58d98e6738806c1e89c645b86156727bf789b8bd255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b9804c71b15a1ff6a0ad58d98e6738806c1e89c645b86156727bf789b8bd255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b9804c71b15a1ff6a0ad58d98e6738806c1e89c645b86156727bf789b8bd255", kill_on_drop: false }`
[INFO] [stdout] 0b9804c71b15a1ff6a0ad58d98e6738806c1e89c645b86156727bf789b8bd255
[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] 5fab4519da3aa793bf88d33fe993af6aa4285ca5e804fa3d2ef693fdab485f83
[INFO] running `Command { std: "docker" "start" "-a" "5fab4519da3aa793bf88d33fe993af6aa4285ca5e804fa3d2ef693fdab485f83", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]     Checking bitflags v2.9.3
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking getrandom v0.3.3
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking tempfile v3.21.0
[INFO] [stderr]     Checking env_filter v0.1.3
[INFO] [stderr]     Checking env_logger v0.11.8
[INFO] [stderr]    Compiling serde_derive_internals v0.29.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling ref-cast-impl v1.0.24
[INFO] [stderr]    Compiling thiserror-impl v2.0.16
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling test-log-macros v0.2.18
[INFO] [stderr]     Checking test-log v0.2.18
[INFO] [stderr]    Compiling schemars_derive v1.0.4
[INFO] [stderr]     Checking tokio v1.47.1
[INFO] [stderr]     Checking ref-cast v1.0.24
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking thiserror v2.0.16
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking uuid v1.18.0
[INFO] [stderr]     Checking ipc-channel v0.20.1
[INFO] [stderr]     Checking schemars v1.0.4
[INFO] [stderr]     Checking ipc-rpc v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<ConnectionKey, Infallible>
[INFO] [stdout]    --> src/lib.rs:108:53
[INFO] [stdout]     |
[INFO] [stdout] 108 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]     |  _____________________________________________________^
[INFO] [stdout] 109 | |         Ok(Self(s.to_string()))
[INFO] [stdout] 110 | |     }
[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<ConnectionKey, Infallible>
[INFO] [stdout]    --> src/lib.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 |         Ok(Self(s.to_string()))
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<ConnectionKey, Infallible>
[INFO] [stdout]    --> src/server.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |             ConnectionKey::from_str(&server_name).expect("server_name is always uuid"),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ipc-rpc` (lib) due to 3 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<ConnectionKey, Infallible>
[INFO] [stdout]    --> src/lib.rs:108:53
[INFO] [stdout]     |
[INFO] [stdout] 108 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]     |  _____________________________________________________^
[INFO] [stdout] 109 | |         Ok(Self(s.to_string()))
[INFO] [stdout] 110 | |     }
[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<ConnectionKey, Infallible>
[INFO] [stdout]    --> src/lib.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 |         Ok(Self(s.to_string()))
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<ConnectionKey, Infallible>
[INFO] [stdout]    --> src/server.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |             ConnectionKey::from_str(&server_name).expect("server_name is always uuid"),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ipc-rpc` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "5fab4519da3aa793bf88d33fe993af6aa4285ca5e804fa3d2ef693fdab485f83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fab4519da3aa793bf88d33fe993af6aa4285ca5e804fa3d2ef693fdab485f83", kill_on_drop: false }`
[INFO] [stdout] 5fab4519da3aa793bf88d33fe993af6aa4285ca5e804fa3d2ef693fdab485f83
