[INFO] fetching crate pulldown-cmark-frontmatter 0.4.0...
[INFO] checking pulldown-cmark-frontmatter-0.4.0 against 5f93549e108157f071a34f220b74b25690496aa1 for pr-162986
[INFO] extracting crate pulldown-cmark-frontmatter 0.4.0 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config
[INFO] started tweaking crates.io crate pulldown-cmark-frontmatter 0.4.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate pulldown-cmark-frontmatter 0.4.0
[INFO] tweaked toml for crates.io crate pulldown-cmark-frontmatter 0.4.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pulldown-cmark-frontmatter 0.4.0 on toolchain 5f93549e108157f071a34f220b74b25690496aa1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5f93549e108157f071a34f220b74b25690496aa1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pulldown-cmark-frontmatter 0.4.0 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" "+5f93549e108157f071a34f220b74b25690496aa1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f265b11f7ff0670dd43d3aa067ae0e2fba0b0ca04bb80138b5e63ab01cd90ac1
[INFO] running `Command { std: "docker" "start" "f265b11f7ff0670dd43d3aa067ae0e2fba0b0ca04bb80138b5e63ab01cd90ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f265b11f7ff0670dd43d3aa067ae0e2fba0b0ca04bb80138b5e63ab01cd90ac1", 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" "f265b11f7ff0670dd43d3aa067ae0e2fba0b0ca04bb80138b5e63ab01cd90ac1" "/opt/rustwide/cargo-home/bin/cargo" "+5f93549e108157f071a34f220b74b25690496aa1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f265b11f7ff0670dd43d3aa067ae0e2fba0b0ca04bb80138b5e63ab01cd90ac1", 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" "f265b11f7ff0670dd43d3aa067ae0e2fba0b0ca04bb80138b5e63ab01cd90ac1" "/opt/rustwide/cargo-home/bin/cargo" "+5f93549e108157f071a34f220b74b25690496aa1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling pulldown-cmark v0.12.1
[INFO] [stderr]     Checking bitflags v2.6.0
[INFO] [stderr]     Checking winnow v0.6.18
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]     Checking indexmap v2.5.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking pulldown-cmark-frontmatter v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0453]: warn(future_incompatible) incompatible with previous forbid
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     future_incompatible,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout]   |
[INFO] [stdout]   = note: `forbid` lint level is the default for unsatisfied_hrtb_arg
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0453`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pulldown-cmark-frontmatter` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f265b11f7ff0670dd43d3aa067ae0e2fba0b0ca04bb80138b5e63ab01cd90ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f265b11f7ff0670dd43d3aa067ae0e2fba0b0ca04bb80138b5e63ab01cd90ac1", kill_on_drop: false }`
[INFO] [stdout] f265b11f7ff0670dd43d3aa067ae0e2fba0b0ca04bb80138b5e63ab01cd90ac1
