[INFO] fetching crate cotton 0.0.20...
[INFO] documenting cotton-0.0.20 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate cotton 0.0.20 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate cotton 0.0.20 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 crates.io crate cotton 0.0.20
[INFO] finished tweaking crates.io crate cotton 0.0.20
[INFO] tweaked toml for crates.io crate cotton 0.0.20 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 shared_child v0.3.5
[INFO] [stderr]   Downloaded boolinator v2.4.0
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[INFO] [stderr]   Downloaded secrecy v0.8.0
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[INFO] [stderr]   Downloaded exec v0.3.1
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[INFO] [stderr]   Downloaded shellwords v1.1.0
[INFO] [stderr]   Downloaded problem v5.3.0
[INFO] [stderr]   Downloaded signal-hook v0.3.14
[INFO] [stderr]   Downloaded file-owner v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] ccabaec1bdcc49f5e7c48ed36fa156cd8cd6c768119177d6d5d5114cf3057412
[INFO] running `Command { std: "docker" "start" "-a" "ccabaec1bdcc49f5e7c48ed36fa156cd8cd6c768119177d6d5d5114cf3057412", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccabaec1bdcc49f5e7c48ed36fa156cd8cd6c768119177d6d5d5114cf3057412", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccabaec1bdcc49f5e7c48ed36fa156cd8cd6c768119177d6d5d5114cf3057412", kill_on_drop: false }`
[INFO] [stdout] ccabaec1bdcc49f5e7c48ed36fa156cd8cd6c768119177d6d5d5114cf3057412
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 33f73ed0823bc8f609774f6abf398e68702a5559479f9afeb5655158a9aa4a4b
[INFO] running `Command { std: "docker" "start" "-a" "33f73ed0823bc8f609774f6abf398e68702a5559479f9afeb5655158a9aa4a4b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]     Checking cpufeatures v0.2.2
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]     Checking opaque-debug v0.3.0
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[INFO] [stderr]     Checking maybe-string v0.1.0
[INFO] [stderr]     Checking boolinator v2.4.0
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking error-context v0.1.2
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking linked_hash_set v0.1.4
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]     Checking shellwords v1.1.0
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[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
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[INFO] [stderr]     Checking exec v0.3.1
[INFO] [stderr]     Checking directories v3.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking uninterruptible v0.1.0
[INFO] [stderr]     Checking file-owner v0.1.1
[INFO] [stderr]     Checking problem v5.3.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]  Documenting cotton v0.0.20 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.08s
[INFO] running `Command { std: "docker" "inspect" "33f73ed0823bc8f609774f6abf398e68702a5559479f9afeb5655158a9aa4a4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33f73ed0823bc8f609774f6abf398e68702a5559479f9afeb5655158a9aa4a4b", kill_on_drop: false }`
[INFO] [stdout] 33f73ed0823bc8f609774f6abf398e68702a5559479f9afeb5655158a9aa4a4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] a61e802f9bd73affe68ae4ed17350bde64dd81c7da2250afb4d6c637c58e3d08
[INFO] running `Command { std: "docker" "start" "-a" "a61e802f9bd73affe68ae4ed17350bde64dd81c7da2250afb4d6c637c58e3d08", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
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[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking vec_map v0.8.2
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[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.26
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[INFO] [stderr]     Checking zeroize v1.5.5
[INFO] [stderr]     Checking either v1.6.1
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[INFO] [stderr]     Checking error-context v0.1.2
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[INFO] [stderr]     Checking hex v0.4.3
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[INFO] [stderr]     Checking tap v1.0.1
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[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking linked_hash_set v0.1.4
[INFO] [stderr]     Checking secrecy v0.8.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking os_pipe v0.9.2
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking shared_child v0.3.5
[INFO] [stderr]     Checking nix v0.24.1
[INFO] [stderr]     Checking errno v0.2.8
[INFO] [stderr]     Checking filetime v0.2.16
[INFO] [stderr]     Checking file-mode v0.1.2
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking duct v0.13.5
[INFO] [stderr]     Checking exec v0.3.1
[INFO] [stderr]     Checking directories v3.0.2
[INFO] [stderr]     Checking uninterruptible v0.1.0
[INFO] [stderr]     Checking shellwords v1.1.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stdout] error[E0277]: the trait bound `proc_macro2::Span: From<proc_macro::Span>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro-error-1.0.4/src/lib.rs:549:37
[INFO] [stdout]     |
[INFO] [stdout] 549 |                 first: self.clone().into(),
[INFO] [stdout]     |                                     ^^^^ the trait `From<proc_macro::Span>` is not implemented for `proc_macro2::Span`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required because of the requirements on the impl of `Into<proc_macro2::Span>` for `proc_macro::Span`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `proc_macro2::Span: From<proc_macro::Span>` is not satisfied
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro-error-1.0.4/src/lib.rs:550:36
[INFO] [stdout]     |
[INFO] [stdout] 550 |                 last: self.clone().into(),
[INFO] [stdout]     |                                    ^^^^ the trait `From<proc_macro::Span>` is not implemented for `proc_macro2::Span`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required because of the requirements on the impl of `Into<proc_macro2::Span>` for `proc_macro::Span`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro-error` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "a61e802f9bd73affe68ae4ed17350bde64dd81c7da2250afb4d6c637c58e3d08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a61e802f9bd73affe68ae4ed17350bde64dd81c7da2250afb4d6c637c58e3d08", kill_on_drop: false }`
[INFO] [stdout] a61e802f9bd73affe68ae4ed17350bde64dd81c7da2250afb4d6c637c58e3d08