[INFO] fetching crate libcnb 0.23.0...
[INFO] checking libcnb-0.23.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate libcnb 0.23.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate libcnb 0.23.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libcnb 0.23.0
[INFO] finished tweaking crates.io crate libcnb 0.23.0
[INFO] tweaked toml for crates.io crate libcnb 0.23.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 127 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.1)
[INFO] [stderr]       Adding bit-set v0.5.3 (latest: v0.8.0)
[INFO] [stderr]       Adding bit-vec v0.6.3 (latest: v0.8.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.6.0)
[INFO] [stderr]       Adding fluent-uri v0.1.4 (latest: v0.2.0)
[INFO] [stderr]       Adding linux-raw-sys v0.4.14 (latest: v0.6.5)
[INFO] [stderr]       Adding opentelemetry v0.21.0 (latest: v0.24.0)
[INFO] [stderr]       Adding opentelemetry-stdout v0.2.0 (latest: v0.5.0)
[INFO] [stderr]       Adding opentelemetry_sdk v0.21.2 (latest: v0.24.1)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.58.0)
[INFO] [stderr]       Adding windows-sys v0.52.0 (latest: v0.59.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded opentelemetry-stdout v0.2.0
[INFO] [stderr]   Downloaded uriparse v0.6.4
[INFO] [stderr]   Downloaded fancy-regex v0.13.0
[INFO] [stderr]   Downloaded purl v0.1.3
[INFO] [stderr]   Downloaded libcnb-common v0.23.0
[INFO] [stderr]   Downloaded libcnb-proc-macros v0.23.0
[INFO] [stderr]   Downloaded libcnb-data v0.23.0
[INFO] [stderr]   Downloaded cyclonedx-bom v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e0981194cadc55eff5fbff443e427d318f23c5b8e2b0a75c12331eb18af93e9
[INFO] running `Command { std: "docker" "start" "-a" "0e0981194cadc55eff5fbff443e427d318f23c5b8e2b0a75c12331eb18af93e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e0981194cadc55eff5fbff443e427d318f23c5b8e2b0a75c12331eb18af93e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e0981194cadc55eff5fbff443e427d318f23c5b8e2b0a75c12331eb18af93e9", kill_on_drop: false }`
[INFO] [stdout] 0e0981194cadc55eff5fbff443e427d318f23c5b8e2b0a75c12331eb18af93e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8fb487c4a0529eddc82980bc12e58738ae7591bf0d77d5bd2504dc8ad6d1a28
[INFO] running `Command { std: "docker" "start" "-a" "f8fb487c4a0529eddc82980bc12e58738ae7591bf0d77d5bd2504dc8ad6d1a28", kill_on_drop: false }`
[INFO] [stderr]    Compiling camino v1.1.9
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling serde_json v1.0.127
[INFO] [stderr]    Compiling regex-syntax v0.8.4
[INFO] [stderr]     Checking winnow v0.6.18
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking uriparse v0.6.4
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]    Compiling thiserror v1.0.63
[INFO] [stderr]     Checking toml_datetime v0.6.8
[INFO] [stderr]     Checking serde_spanned v0.6.7
[INFO] [stderr]     Checking tempfile v3.12.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking toml_edit v0.22.20
[INFO] [stderr]     Checking fancy-regex v0.13.0
[INFO] [stderr]    Compiling cargo-platform v0.1.8
[INFO] [stderr]     Checking toml v0.8.19
[INFO] [stderr]    Compiling cargo_metadata v0.18.1
[INFO] [stderr]     Checking libcnb-common v0.23.0
[INFO] [stderr]    Compiling libcnb-proc-macros v0.23.0
[INFO] [stderr]     Checking libcnb-data v0.23.0
[INFO] [stderr]     Checking libcnb v0.23.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/runtime.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |     let mut trace_error = |_: &dyn std::error::Error| {};
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/runtime.rs:209:9
[INFO] [stdout]     |
[INFO] [stdout] 209 |     let mut trace_error = |_: &dyn std::error::Error| {};
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/runtime.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 141 |     let mut trace_error = |_: &dyn std::error::Error| {};
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/runtime.rs:209:9
[INFO] [stdout]     |
[INFO] [stdout] 209 |     let mut trace_error = |_: &dyn std::error::Error| {};
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.25s
[INFO] running `Command { std: "docker" "inspect" "f8fb487c4a0529eddc82980bc12e58738ae7591bf0d77d5bd2504dc8ad6d1a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8fb487c4a0529eddc82980bc12e58738ae7591bf0d77d5bd2504dc8ad6d1a28", kill_on_drop: false }`
[INFO] [stdout] f8fb487c4a0529eddc82980bc12e58738ae7591bf0d77d5bd2504dc8ad6d1a28