[INFO] fetching crate narrow 0.15.1...
[INFO] checking narrow-0.15.1 against try#6284d7b4bd27983dba388146648ab844ca7d032f for pr-152971
[INFO] extracting crate narrow 0.15.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate narrow 0.15.1
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate narrow 0.15.1
[INFO] tweaked toml for crates.io crate narrow 0.15.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate narrow 0.15.1 on toolchain 6284d7b4bd27983dba388146648ab844ca7d032f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate narrow 0.15.1 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" "+6284d7b4bd27983dba388146648ab844ca7d032f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd8ac83591aa54954245d95148ab644ade27e3708429a19a7513232d457ab0cf
[INFO] running `Command { std: "docker" "start" "-a" "dd8ac83591aa54954245d95148ab644ade27e3708429a19a7513232d457ab0cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd8ac83591aa54954245d95148ab644ade27e3708429a19a7513232d457ab0cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd8ac83591aa54954245d95148ab644ade27e3708429a19a7513232d457ab0cf", kill_on_drop: false }`
[INFO] [stdout] dd8ac83591aa54954245d95148ab644ade27e3708429a19a7513232d457ab0cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+6284d7b4bd27983dba388146648ab844ca7d032f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb5efc5f9d457296a8bf912cc43c8d9374db71a34835b51c017de45b218e59dc
[INFO] running `Command { std: "docker" "start" "-a" "bb5efc5f9d457296a8bf912cc43c8d9374db71a34835b51c017de45b218e59dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling semver v1.0.20
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling ahash v0.8.7
[INFO] [stderr]     Checking lexical-util v1.0.3
[INFO] [stderr]    Compiling serde_core v1.0.225
[INFO] [stderr]     Checking iana-time-zone v0.1.58
[INFO] [stderr]     Checking zerocopy v0.7.31
[INFO] [stderr]     Checking arrow-schema v57.0.0
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]    Compiling serde v1.0.225
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking hashbrown v0.16.0
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]    Compiling flatbuffers v25.2.10
[INFO] [stderr]     Checking lexical-write-integer v1.0.2
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking lexical-parse-integer v1.0.2
[INFO] [stderr]    Compiling syn v2.0.109
[INFO] [stderr]    Compiling zerocopy v0.8.14
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]     Checking lexical-write-float v1.0.2
[INFO] [stderr]     Checking lexical-parse-float v1.0.2
[INFO] [stderr]     Checking unicode-width v0.2.1
[INFO] [stderr]     Checking ciborium-io v0.2.1
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking half v2.3.1
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking chrono v0.4.42
[INFO] [stderr]     Checking strum v0.26.3
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking ciborium-ll v0.2.1
[INFO] [stderr]     Checking lexical-core v1.0.2
[INFO] [stderr]     Checking itertools v0.13.0
[INFO] [stderr]     Checking atoi v2.0.0
[INFO] [stderr]     Checking ordered-float v2.10.1
[INFO] [stderr]     Checking clap_builder v4.5.38
[INFO] [stderr]     Checking base64 v0.22.0
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking arrow-buffer v57.0.0
[INFO] [stderr]     Checking thrift v0.17.0
[INFO] [stderr]     Checking walkdir v2.4.0
[INFO] [stderr]     Checking oorandom v11.1.3
[INFO] [stderr]    Compiling seq-macro v0.3.5
[INFO] [stderr]     Checking arrow-data v57.0.0
[INFO] [stderr]     Checking twox-hash v2.1.0
[INFO] [stderr]     Checking anes v0.1.6
[INFO] [stderr]     Checking criterion-plot v0.6.0
[INFO] [stderr]     Checking clap v4.5.38
[INFO] [stderr]     Checking rand_core v0.9.0
[INFO] [stderr]     Checking uuid v1.18.1
[INFO] [stderr]     Checking narrow v0.15.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand v0.9.2
[INFO] [stderr]     Checking arrow-array v57.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.225
[INFO] [stderr]    Compiling strum_macros v0.26.4
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking comfy-table v7.1.2
[INFO] [stderr]     Checking arrow-select v57.0.0
[INFO] [stderr]     Checking arrow-cast v57.0.0
[INFO] [stderr]     Checking arrow-ipc v57.0.0
[INFO] [stderr]     Checking ciborium v0.2.1
[INFO] [stderr]     Checking parquet v57.0.0
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.7.0
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/buffer.rs:403:45
[INFO] [stdout]     |
[INFO] [stdout] 403 |         slice_array_mut.as_mut_slice()[0] = 0;
[INFO] [stdout]     |         ---------------------------------   ^ expected `[u8; 3]`, found integer
[INFO] [stdout]     |         |
[INFO] [stdout]     |         expected due to the type of this binding
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: variable does not need to be mutable
[INFO] [stdout]    --> src/buffer.rs:391:13
[INFO] [stdout]     |
[INFO] [stdout] 391 |         let mut slice_mut: <SliceMutBuffer as BufferType>::Buffer<u16> = &mut [4321, 1234];
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:16:5
[INFO] [stdout]     |
[INFO] [stdout]  16 |     unused,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     = note: `#[deny(unused_mut)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `narrow` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "bb5efc5f9d457296a8bf912cc43c8d9374db71a34835b51c017de45b218e59dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb5efc5f9d457296a8bf912cc43c8d9374db71a34835b51c017de45b218e59dc", kill_on_drop: false }`
[INFO] [stdout] bb5efc5f9d457296a8bf912cc43c8d9374db71a34835b51c017de45b218e59dc