[INFO] fetching crate difftastic-oc 0.23.0...
[INFO] checking difftastic-oc-0.23.0 against try#dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e for pr-153721
[INFO] extracting crate difftastic-oc 0.23.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate difftastic-oc 0.23.0
[INFO] finished tweaking crates.io crate difftastic-oc 0.23.0
[INFO] tweaked toml for crates.io crate difftastic-oc 0.23.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate difftastic-oc 0.23.0 on toolchain dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate difftastic-oc 0.23.0 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" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4ca378ecc7b242d64a301e66718469ca360f89be169abf2b0a74aa82f4db618f
[INFO] running `Command { std: "docker" "start" "4ca378ecc7b242d64a301e66718469ca360f89be169abf2b0a74aa82f4db618f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4ca378ecc7b242d64a301e66718469ca360f89be169abf2b0a74aa82f4db618f" "/opt/rustwide/cargo-home/bin/cargo" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ca378ecc7b242d64a301e66718469ca360f89be169abf2b0a74aa82f4db618f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4ca378ecc7b242d64a301e66718469ca360f89be169abf2b0a74aa82f4db618f" "/opt/rustwide/cargo-home/bin/cargo" "+dcc22e5232dd0dbe95a4b3ab84c8d24a0880771e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling quote v1.0.13
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking archery v0.4.0
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking rpds v0.11.0
[INFO] [stderr]     Checking typed-arena v2.0.1
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking owo-colors v3.2.0
[INFO] [stderr]     Checking wu-diff v0.1.2
[INFO] [stderr]     Checking radix-heap v0.4.2
[INFO] [stderr]     Checking pretty_assertions v1.0.0
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]     Checking clap v3.0.13
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.22
[INFO] [stderr]    Compiling libmimalloc-sys v0.1.23
[INFO] [stderr]    Compiling tree-sitter v0.20.5
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking const_format v0.2.22
[INFO] [stderr]     Checking mimalloc v0.1.27
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling difftastic-oc v0.23.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: target-based cfg should be avoided in build scripts
[INFO] [stdout]   --> build.rs:34:16
[INFO] [stdout]    |
[INFO] [stdout] 34 |             if cfg!(windows) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^ help: use cargo environment variables if possible: `std::env::var("CARGO_CFG_WINDOWS").is_ok()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(misleading_cfg_in_build_script)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `difftastic-oc` (build script) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4ca378ecc7b242d64a301e66718469ca360f89be169abf2b0a74aa82f4db618f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ca378ecc7b242d64a301e66718469ca360f89be169abf2b0a74aa82f4db618f", kill_on_drop: false }`
[INFO] [stdout] 4ca378ecc7b242d64a301e66718469ca360f89be169abf2b0a74aa82f4db618f