[INFO] cloning repository https://github.com/playXE/cranelift-mem2reg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/playXE/cranelift-mem2reg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FplayXE%2Fcranelift-mem2reg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FplayXE%2Fcranelift-mem2reg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b048cd285a3e4fd3f904905ac977068222c77cd
[INFO] documenting playXE/cranelift-mem2reg against master#ef324565d071c6d7e2477a195648549e33d6a465 for pr-121659-bump-pulldown-cmark
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FplayXE%2Fcranelift-mem2reg" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/playXE/cranelift-mem2reg on toolchain ef324565d071c6d7e2477a195648549e33d6a465
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ef324565d071c6d7e2477a195648549e33d6a465" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/playXE/cranelift-mem2reg
[INFO] finished tweaking git repo https://github.com/playXE/cranelift-mem2reg
[INFO] tweaked toml for git repo https://github.com/playXE/cranelift-mem2reg written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/playXE/cranelift-mem2reg 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" "+ef324565d071c6d7e2477a195648549e33d6a465" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] documenting playXE/cranelift-mem2reg against try#223112bf1ca31911a6475910c77b36bfa127d5f8 for pr-121659-bump-pulldown-cmark
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FplayXE%2Fcranelift-mem2reg" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/playXE/cranelift-mem2reg on toolchain 223112bf1ca31911a6475910c77b36bfa127d5f8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+223112bf1ca31911a6475910c77b36bfa127d5f8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/playXE/cranelift-mem2reg
[INFO] finished tweaking git repo https://github.com/playXE/cranelift-mem2reg
[INFO] tweaked toml for git repo https://github.com/playXE/cranelift-mem2reg written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/playXE/cranelift-mem2reg 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" "+223112bf1ca31911a6475910c77b36bfa127d5f8" "fetch" "--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 cranelift-native v0.62.0
[INFO] [stderr]   Downloaded cranelift-entity v0.62.0
[INFO] [stderr]   Downloaded hashlink v0.5.0
[INFO] [stderr]   Downloaded cranelift v0.62.0
[INFO] [stderr]   Downloaded cranelift-simplejit v0.62.0
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.62.0
[INFO] [stderr]   Downloaded cranelift-module v0.62.0
[INFO] [stderr]   Downloaded cranelift-bforest v0.62.0
[INFO] [stderr]   Downloaded cranelift-frontend v0.62.0
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.62.0
[INFO] [stderr]   Downloaded cranelift-codegen v0.62.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+223112bf1ca31911a6475910c77b36bfa127d5f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8729249665d7226ea0b3695a641bdd9af0152fc4cc009c5786a279cfbdcc3c06
[INFO] running `Command { std: "docker" "start" "-a" "8729249665d7226ea0b3695a641bdd9af0152fc4cc009c5786a279cfbdcc3c06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8729249665d7226ea0b3695a641bdd9af0152fc4cc009c5786a279cfbdcc3c06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8729249665d7226ea0b3695a641bdd9af0152fc4cc009c5786a279cfbdcc3c06", kill_on_drop: false }`
[INFO] [stdout] 8729249665d7226ea0b3695a641bdd9af0152fc4cc009c5786a279cfbdcc3c06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+223112bf1ca31911a6475910c77b36bfa127d5f8" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d78c543ae163c827d6443de3d1970254b86a56762001ba111ce12d006af3de5f
[INFO] running `Command { std: "docker" "start" "-a" "d78c543ae163c827d6443de3d1970254b86a56762001ba111ce12d006af3de5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling cranelift-entity v0.62.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.62.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]    Compiling cc v1.0.52
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.62.0
[INFO] [stderr]     Checking cranelift-bforest v0.62.0
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling hashbrown v0.7.1
[INFO] [stderr]    Compiling raw-cpuid v7.0.3
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking region v2.1.2
[INFO] [stderr]     Checking errno v0.2.5
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking ahash v0.3.2
[INFO] [stderr]     Checking hashlink v0.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.15
[INFO] [stderr]     Checking thiserror v1.0.15
[INFO] [stderr]    Compiling cranelift-codegen v0.62.0
[INFO] [stderr]     Checking cranelift-native v0.62.0
[INFO] [stderr]     Checking cranelift-module v0.62.0
[INFO] [stderr]     Checking cranelift-frontend v0.62.0
[INFO] [stderr]     Checking cranelift-simplejit v0.62.0
[INFO] [stderr]     Checking cranelift v0.62.0
[INFO] [stderr]  Documenting cranelift-mem2reg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.21s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: cranelift-codegen-meta v0.62.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]    Generated /opt/rustwide/target/doc/cranelift_mem2reg/index.html
[INFO] running `Command { std: "docker" "inspect" "d78c543ae163c827d6443de3d1970254b86a56762001ba111ce12d006af3de5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d78c543ae163c827d6443de3d1970254b86a56762001ba111ce12d006af3de5f", kill_on_drop: false }`
[INFO] [stdout] d78c543ae163c827d6443de3d1970254b86a56762001ba111ce12d006af3de5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+223112bf1ca31911a6475910c77b36bfa127d5f8" "rustdoc" "--lib" "-Zrustdoc-map" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11a7d307a54b36474d1cf6f0deed2e8c3d39f72d7b5895fb75eb98ab03e6126e
[INFO] running `Command { std: "docker" "start" "-a" "11a7d307a54b36474d1cf6f0deed2e8c3d39f72d7b5895fb75eb98ab03e6126e", kill_on_drop: false }`
[INFO] [stderr]  Documenting cranelift-mem2reg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: cranelift-codegen-meta v0.62.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]    Generated /opt/rustwide/target/doc/cranelift_mem2reg/index.html
[INFO] running `Command { std: "docker" "inspect" "11a7d307a54b36474d1cf6f0deed2e8c3d39f72d7b5895fb75eb98ab03e6126e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11a7d307a54b36474d1cf6f0deed2e8c3d39f72d7b5895fb75eb98ab03e6126e", kill_on_drop: false }`
[INFO] [stdout] 11a7d307a54b36474d1cf6f0deed2e8c3d39f72d7b5895fb75eb98ab03e6126e