[INFO] cloning repository https://github.com/jpoles1/learnr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jpoles1/learnr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjpoles1%2Flearnr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjpoles1%2Flearnr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f66075a5b4d5ce8b4fe805c8a7f87f09828676b9
[INFO] documenting jpoles1/learnr against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjpoles1%2Flearnr" "/workspace/builds/worker-30/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-30/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jpoles1/learnr on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jpoles1/learnr
[INFO] finished tweaking git repo https://github.com/jpoles1/learnr
[INFO] tweaked toml for git repo https://github.com/jpoles1/learnr written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] crate git repo https://github.com/jpoles1/learnr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing v0.1.18
[INFO] [stderr]   Downloaded tracing-core v0.1.13
[INFO] [stderr]   Downloaded os_info v2.0.7
[INFO] [stderr]   Downloaded restson v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e0268769e1c79f7f6f44f93425b350b70eb5a1e925bad94be0ce6f2c307208d
[INFO] running `Command { std: "docker" "start" "-a" "8e0268769e1c79f7f6f44f93425b350b70eb5a1e925bad94be0ce6f2c307208d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e0268769e1c79f7f6f44f93425b350b70eb5a1e925bad94be0ce6f2c307208d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e0268769e1c79f7f6f44f93425b350b70eb5a1e925bad94be0ce6f2c307208d", kill_on_drop: false }`
[INFO] [stdout] 8e0268769e1c79f7f6f44f93425b350b70eb5a1e925bad94be0ce6f2c307208d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a6ef4a7ca101f7fbb17a72959c5cf11ce622f1ffa7d0d540142689f0daff77f
[INFO] running `Command { std: "docker" "start" "-a" "0a6ef4a7ca101f7fbb17a72959c5cf11ce622f1ffa7d0d540142689f0daff77f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]    Compiling cc v1.0.58
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking arc-swap v0.4.7
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.18
[INFO] [stderr]     Checking pin-project-lite v0.1.7
[INFO] [stderr]     Checking tinyvec v0.3.3
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]    Compiling openssl v0.10.30
[INFO] [stderr]     Checking smallvec v1.4.1
[INFO] [stderr]    Compiling rustversion v1.0.3
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking gimli v0.22.0
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]     Checking siphasher v0.2.3
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking subtle v1.0.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking tower-service v0.3.0
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking md5 v0.6.1
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking version_check v0.9.2
[INFO] [stderr]     Checking urlencoding v1.1.1
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking dotenv v0.15.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling hashbrown v0.8.1
[INFO] [stderr]    Compiling indexmap v1.5.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking tracing-core v0.1.13
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr] error: could not compile `typenum`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name build_script_main /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/typenum-1.12.0/build/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=d551423caca8ad23 -C extra-filename=-d551423caca8ad23 --out-dir /opt/rustwide/target/debug/build/typenum-d551423caca8ad23 -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `cc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name cc --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cc-1.0.58/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=8518a26eda34edb4 -C extra-filename=-8518a26eda34edb4 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name build_script_build /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-0.15.44/build.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' -C metadata=adf003bacc581d4e -C extra-filename=-adf003bacc581d4e --out-dir /opt/rustwide/target/debug/build/syn-adf003bacc581d4e -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `rand_core`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name rand_core /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand_core-0.4.2/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="alloc"' --cfg 'feature="std"' -C metadata=fe85d5b9200ae8e5 -C extra-filename=-fe85d5b9200ae8e5 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `httparse`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name build_script_build /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/httparse-1.3.4/build.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' -C metadata=174f4085731dace4 -C extra-filename=-174f4085731dace4 --out-dir /opt/rustwide/target/debug/build/httparse-174f4085731dace4 -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `byteorder`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name build_script_build /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/byteorder-1.3.4/build.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' -C metadata=d8143488c312e707 -C extra-filename=-d8143488c312e707 --out-dir /opt/rustwide/target/debug/build/byteorder-d8143488c312e707 -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `proc-macro2`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name build_script_build /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.30/build.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="proc-macro"' -C metadata=e05043c492eb5c11 -C extra-filename=-e05043c492eb5c11 --out-dir /opt/rustwide/target/debug/build/proc-macro2-e05043c492eb5c11 -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `pkg-config`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name pkg_config /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pkg-config-0.3.18/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=527b29c514a225b2 -C extra-filename=-527b29c514a225b2 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `gimli`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name gimli --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/gimli-0.22.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="read"' -C metadata=8a36db4bc8d31484 -C extra-filename=-8a36db4bc8d31484 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `proc-macro-hack`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name proc_macro_hack --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro-hack-0.5.18/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type proc-macro --emit=dep-info,link -C prefer-dynamic -C embed-bitcode=no -C debuginfo=2 -C metadata=ca6aa5d538ed2e1c -C extra-filename=-ca6aa5d538ed2e1c --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not compile `regex-syntax`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name regex_syntax /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/regex-syntax-0.6.18/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' -C metadata=e39cb6ddd0222123 -C extra-filename=-e39cb6ddd0222123 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "0a6ef4a7ca101f7fbb17a72959c5cf11ce622f1ffa7d0d540142689f0daff77f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a6ef4a7ca101f7fbb17a72959c5cf11ce622f1ffa7d0d540142689f0daff77f", kill_on_drop: false }`
[INFO] [stdout] 0a6ef4a7ca101f7fbb17a72959c5cf11ce622f1ffa7d0d540142689f0daff77f