[INFO] cloning repository https://github.com/Enet4/pandoc-ac
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Enet4/pandoc-ac" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEnet4%2Fpandoc-ac", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEnet4%2Fpandoc-ac'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 56a3957fc2e8f79dee78c4301ed7028a4c51728c
[INFO] checking Enet4/pandoc-ac against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEnet4%2Fpandoc-ac" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Enet4/pandoc-ac on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Enet4/pandoc-ac
[INFO] finished tweaking git repo https://github.com/Enet4/pandoc-ac
[INFO] tweaked toml for git repo https://github.com/Enet4/pandoc-ac written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Enet4/pandoc-ac already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pandoc_ast v0.7.2
[INFO] [stderr]   Downloaded pandoc v0.7.0
[INFO] [stderr]   Downloaded ctor v0.1.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ce2e5d8284d76738caa677b028f45f38182f67d4f17acc4b1a1af61a4c47278
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5ce2e5d8284d76738caa677b028f45f38182f67d4f17acc4b1a1af61a4c47278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ce2e5d8284d76738caa677b028f45f38182f67d4f17acc4b1a1af61a4c47278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ce2e5d8284d76738caa677b028f45f38182f67d4f17acc4b1a1af61a4c47278", kill_on_drop: false }`
[INFO] [stdout] 5ce2e5d8284d76738caa677b028f45f38182f67d4f17acc4b1a1af61a4c47278
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0cdc926edaab77171081090deb4f4c932fe7e2c0f95b331da7a9c164d0100f37
[INFO] running `Command { std: "docker" "start" "-a" "0cdc926edaab77171081090deb4f4c932fe7e2c0f95b331da7a9c164d0100f37", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling regex v1.1.2
[INFO] [stderr]     Checking rustc-demangle v0.1.13
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking regex-syntax v0.6.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking itertools v0.6.5
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking pandoc v0.7.0
[INFO] [stderr]     Checking tempfile v3.0.7
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking pandoc_ast v0.7.2
[INFO] [stderr]     Checking pandoc-ac v0.2.1-alpha.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.30s
[INFO] running `Command { std: "docker" "inspect" "0cdc926edaab77171081090deb4f4c932fe7e2c0f95b331da7a9c164d0100f37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cdc926edaab77171081090deb4f4c932fe7e2c0f95b331da7a9c164d0100f37", kill_on_drop: false }`
[INFO] [stdout] 0cdc926edaab77171081090deb4f4c932fe7e2c0f95b331da7a9c164d0100f37