[INFO] cloning repository https://github.com/ampersand-lang/etc-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ampersand-lang/etc-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fampersand-lang%2Fetc-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fampersand-lang%2Fetc-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5f37c44024d91322a51c1dd5cdea9d2560827f75
[INFO] documenting ampersand-lang/etc-rs against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fampersand-lang%2Fetc-rs" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ampersand-lang/etc-rs on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ampersand-lang/etc-rs
[INFO] finished tweaking git repo https://github.com/ampersand-lang/etc-rs
[INFO] tweaked toml for git repo https://github.com/ampersand-lang/etc-rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/ampersand-lang/etc-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded target-lexicon v0.10.0
[INFO] [stderr]   Downloaded errno v0.2.5
[INFO] [stderr]   Downloaded abort_on_panic v2.0.0
[INFO] [stderr]   Downloaded region v2.1.2
[INFO] [stderr]   Downloaded cranelift-module v0.62.0
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.62.0
[INFO] [stderr]   Downloaded cranelift-simplejit v0.62.0
[INFO] [stderr]   Downloaded object v0.18.0
[INFO] [stderr]   Downloaded cranelift-object v0.62.0
[INFO] [stderr]   Downloaded cranelift v0.62.0
[INFO] [stderr]   Downloaded bindgen v0.52.0
[INFO] [stderr]   Downloaded cranelift-codegen v0.62.0
[INFO] [stderr]   Downloaded cranelift-native v0.62.0
[INFO] [stderr]   Downloaded cranelift-frontend v0.62.0
[INFO] [stderr]   Downloaded libffi-sys v0.9.1
[INFO] [stderr]   Downloaded libffi v0.9.0
[INFO] [stderr]   Downloaded cranelift-bforest v0.62.0
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.62.0
[INFO] [stderr]   Downloaded raw-cpuid v7.0.3
[INFO] [stderr]   Downloaded cranelift-entity v0.62.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 452b3c46cedfee3250af6f71b041e29832641fbe99090cc1a18ca9c8b11ab99e
[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" "452b3c46cedfee3250af6f71b041e29832641fbe99090cc1a18ca9c8b11ab99e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "452b3c46cedfee3250af6f71b041e29832641fbe99090cc1a18ca9c8b11ab99e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "452b3c46cedfee3250af6f71b041e29832641fbe99090cc1a18ca9c8b11ab99e", kill_on_drop: false }`
[INFO] [stdout] 452b3c46cedfee3250af6f71b041e29832641fbe99090cc1a18ca9c8b11ab99e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7f6302a5b1413a503ee5b04c2d4daced01ba3b6a7a3e96a73fff0255253ca1c
[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" "d7f6302a5b1413a503ee5b04c2d4daced01ba3b6a7a3e96a73fff0255253ca1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.62.0
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]    Compiling cranelift-entity v0.62.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]     Checking smallvec v1.3.0
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling bindgen v0.52.0
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling make-cmd v0.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]     Checking abort_on_panic v2.0.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.35
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.62.0
[INFO] [stderr]     Checking cranelift-bforest v0.62.0
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling raw-cpuid v7.0.3
[INFO] [stderr]     Checking object v0.18.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking region v2.1.2
[INFO] [stderr]     Checking errno v0.2.5
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]    Compiling regex v1.3.6
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.14
[INFO] [stderr]    Compiling cranelift-codegen v0.62.0
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking thiserror v1.0.14
[INFO] [stderr]    Compiling libffi-sys v0.9.1
[INFO] [stderr]     Checking cranelift-module v0.62.0
[INFO] [stderr]     Checking cranelift-frontend v0.62.0
[INFO] [stderr]     Checking cranelift-native v0.62.0
[INFO] [stderr]     Checking cranelift-simplejit v0.62.0
[INFO] [stderr]     Checking cranelift-object v0.62.0
[INFO] [stderr]     Checking cranelift v0.62.0
[INFO] [stderr]     Checking libffi v0.9.0
[INFO] [stderr]  Documenting etc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 03s
[INFO] running `Command { std: "docker" "inspect" "d7f6302a5b1413a503ee5b04c2d4daced01ba3b6a7a3e96a73fff0255253ca1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7f6302a5b1413a503ee5b04c2d4daced01ba3b6a7a3e96a73fff0255253ca1c", kill_on_drop: false }`
[INFO] [stdout] d7f6302a5b1413a503ee5b04c2d4daced01ba3b6a7a3e96a73fff0255253ca1c