[INFO] fetching crate hlbc 0.7.0...
[INFO] checking hlbc-0.7.0 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate hlbc 0.7.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate hlbc 0.7.0 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hlbc 0.7.0
[INFO] finished tweaking crates.io crate hlbc 0.7.0
[INFO] tweaked toml for crates.io crate hlbc 0.7.0 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding fixedbitset v0.4.2 (latest: v0.5.7)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fmtools v0.1.2
[INFO] [stderr]   Downloaded flexstr v0.9.2
[INFO] [stderr]   Downloaded hlbc-derive 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0a8052a207f48ad979aa8d0fdf541052eaafa81220161d657925202da01d99c
[INFO] running `Command { std: "docker" "start" "-a" "f0a8052a207f48ad979aa8d0fdf541052eaafa81220161d657925202da01d99c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0a8052a207f48ad979aa8d0fdf541052eaafa81220161d657925202da01d99c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0a8052a207f48ad979aa8d0fdf541052eaafa81220161d657925202da01d99c", kill_on_drop: false }`
[INFO] [stdout] f0a8052a207f48ad979aa8d0fdf541052eaafa81220161d657925202da01d99c
[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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bda552e90023497283920cbfdf7810fb67029699aaa626a653e35eb1053c8132
[INFO] running `Command { std: "docker" "start" "-a" "bda552e90023497283920cbfdf7810fb67029699aaa626a653e35eb1053c8132", kill_on_drop: false }`
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking fmtools v0.1.2
[INFO] [stderr]    Compiling syn v2.0.76
[INFO] [stderr]     Checking petgraph v0.6.5
[INFO] [stderr]     Checking flexstr v0.9.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling hlbc-derive v0.7.0
[INFO] [stderr]     Checking thiserror v1.0.63
[INFO] [stderr]     Checking hlbc v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Display`
[INFO] [stdout]    --> src/fmt.rs:877:20
[INFO] [stdout]     |
[INFO] [stdout] 877 |     use std::fmt::{Display, Write};
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> src/fmt.rs:889:33
[INFO] [stdout]     |
[INFO] [stdout] 889 |         fn write_str(&mut self, s: &str) -> std::fmt::Result {
[INFO] [stdout]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `list_strings` is never used
[INFO] [stdout]    --> src/read.rs:573:8
[INFO] [stdout]     |
[INFO] [stdout] 573 |     fn list_strings() {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ser_eq_deser_all` is never used
[INFO] [stdout]    --> src/write.rs:407:8
[INFO] [stdout]     |
[INFO] [stdout] 407 |     fn ser_eq_deser_all() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.51s
[INFO] running `Command { std: "docker" "inspect" "bda552e90023497283920cbfdf7810fb67029699aaa626a653e35eb1053c8132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bda552e90023497283920cbfdf7810fb67029699aaa626a653e35eb1053c8132", kill_on_drop: false }`
[INFO] [stdout] bda552e90023497283920cbfdf7810fb67029699aaa626a653e35eb1053c8132