[INFO] fetching crate stack-string 1.1.3...
[INFO] checking stack-string-1.1.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate stack-string 1.1.3 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate stack-string 1.1.3
[INFO] finished tweaking crates.io crate stack-string 1.1.3
[INFO] tweaked toml for crates.io crate stack-string 1.1.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stack-string 1.1.3 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 stack-string 1.1.3 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] [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] 424e44742e1e915549b0165844554a751340768fa2b0c16093b28b31e8bd19b2
[INFO] running `Command { std: "docker" "start" "-a" "424e44742e1e915549b0165844554a751340768fa2b0c16093b28b31e8bd19b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "424e44742e1e915549b0165844554a751340768fa2b0c16093b28b31e8bd19b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "424e44742e1e915549b0165844554a751340768fa2b0c16093b28b31e8bd19b2", kill_on_drop: false }`
[INFO] [stdout] 424e44742e1e915549b0165844554a751340768fa2b0c16093b28b31e8bd19b2
[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] f29a6bc15dce7efd35fb7b879da8a06a1513d5017d9df25f71c915fd2f285dfe
[INFO] running `Command { std: "docker" "start" "-a" "f29a6bc15dce7efd35fb7b879da8a06a1513d5017d9df25f71c915fd2f285dfe", kill_on_drop: false }`
[INFO] [stderr]    Compiling convert_case v0.7.1
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking getrandom v0.3.3
[INFO] [stderr]     Checking castaway v0.2.4
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling markup-proc-macro v0.15.0
[INFO] [stderr]    Compiling derive_more-impl v2.0.1
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]     Checking markup v0.15.0
[INFO] [stderr]     Checking tokio v1.47.1
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking derive_more v2.0.1
[INFO] [stderr]     Checking compact_str v0.9.0
[INFO] [stderr]     Checking serde_json v1.0.143
[INFO] [stderr]     Checking stack-string v1.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<SmallString<CAP>, Infallible>
[INFO] [stdout]    --> src/small_string.rs:430:53
[INFO] [stdout]     |
[INFO] [stdout] 430 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]     |  _____________________________________________________^
[INFO] [stdout] 431 | |         Ok(s.into())
[INFO] [stdout] 432 | |     }
[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<SmallString<CAP>, Infallible>
[INFO] [stdout]    --> src/small_string.rs:431:9
[INFO] [stdout]     |
[INFO] [stdout] 431 |         Ok(s.into())
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<StackCow<'_>, Infallible>
[INFO] [stdout]    --> src/stack_cow.rs:231:53
[INFO] [stdout]     |
[INFO] [stdout] 231 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]     |  _____________________________________________________^
[INFO] [stdout] 232 | |         Ok(Self::Owned(s.into()))
[INFO] [stdout] 233 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<StackCow<'_>, Infallible>
[INFO] [stdout]    --> src/stack_cow.rs:232:9
[INFO] [stdout]     |
[INFO] [stdout] 232 |         Ok(Self::Owned(s.into()))
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<StackString, Infallible>
[INFO] [stdout]    --> src/stack_string.rs:204:53
[INFO] [stdout]     |
[INFO] [stdout] 204 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]     |  _____________________________________________________^
[INFO] [stdout] 205 | |         Ok(s.into())
[INFO] [stdout] 206 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<StackString, Infallible>
[INFO] [stdout]    --> src/stack_string.rs:205:9
[INFO] [stdout]     |
[INFO] [stdout] 205 |         Ok(s.into())
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stack-string` (lib) due to 6 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f29a6bc15dce7efd35fb7b879da8a06a1513d5017d9df25f71c915fd2f285dfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f29a6bc15dce7efd35fb7b879da8a06a1513d5017d9df25f71c915fd2f285dfe", kill_on_drop: false }`
[INFO] [stdout] f29a6bc15dce7efd35fb7b879da8a06a1513d5017d9df25f71c915fd2f285dfe