[INFO] fetching crate einsum-codegen 0.1.0...
[INFO] documenting einsum-codegen-0.1.0 against master#8afe9ff1caa97654c31fb8c259dac9fdf67d6302 for pr-151918
[INFO] extracting crate einsum-codegen 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate einsum-codegen 0.1.0
[INFO] finished tweaking crates.io crate einsum-codegen 0.1.0
[INFO] tweaked toml for crates.io crate einsum-codegen 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate einsum-codegen 0.1.0 on toolchain 8afe9ff1caa97654c31fb8c259dac9fdf67d6302
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8afe9ff1caa97654c31fb8c259dac9fdf67d6302" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8afe9ff1caa97654c31fb8c259dac9fdf67d6302" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 47 packages to latest compatible versions
[INFO] [stderr]       Adding ndarray v0.15.6 (available: v0.17.2)
[INFO] [stderr]       Adding nom v7.1.3 (available: v8.0.0)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.114)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8afe9ff1caa97654c31fb8c259dac9fdf67d6302" "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 katexit v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+8afe9ff1caa97654c31fb8c259dac9fdf67d6302" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6de0044503ab8dd4f86f2fdfdac334bb58b814ca85db15c82d4644473f10031
[INFO] running `Command { std: "docker" "start" "-a" "d6de0044503ab8dd4f86f2fdfdac334bb58b814ca85db15c82d4644473f10031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6de0044503ab8dd4f86f2fdfdac334bb58b814ca85db15c82d4644473f10031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6de0044503ab8dd4f86f2fdfdac334bb58b814ca85db15c82d4644473f10031", kill_on_drop: false }`
[INFO] [stdout] d6de0044503ab8dd4f86f2fdfdac334bb58b814ca85db15c82d4644473f10031
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+8afe9ff1caa97654c31fb8c259dac9fdf67d6302" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1037a724152482c569b87734f74375c5ff33c5264fc1a23f3eec78b07fc0439
[INFO] running `Command { std: "docker" "start" "-a" "f1037a724152482c569b87734f74375c5ff33c5264fc1a23f3eec78b07fc0439", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking memchr v2.8.0
[INFO] [stderr]    Compiling katexit v0.1.5
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]  Documenting einsum-codegen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `prelude_import` is internal to the compiler or standard library
[INFO] [stdout]  --> src/lib.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 |     feature(prelude_import, custom_inner_attributes, proc_macro_hygiene)
[INFO] [stdout]   |             ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout]   = note: `#[warn(internal_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.58s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/einsum_codegen/index.html
[INFO] running `Command { std: "docker" "inspect" "f1037a724152482c569b87734f74375c5ff33c5264fc1a23f3eec78b07fc0439", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1037a724152482c569b87734f74375c5ff33c5264fc1a23f3eec78b07fc0439", kill_on_drop: false }`
[INFO] [stdout] f1037a724152482c569b87734f74375c5ff33c5264fc1a23f3eec78b07fc0439
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "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@sha256:29356a839a4d14451438f794ce8414e707d72405f44418718d724d22562fe786" "/opt/rustwide/cargo-home/bin/cargo" "+8afe9ff1caa97654c31fb8c259dac9fdf67d6302" "rustdoc" "--lib" "-Zrustdoc-map" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 312bfda1d2d7b7235945f9c670fefc542f692e370affee400582019c7c7df1d1
[INFO] running `Command { std: "docker" "start" "-a" "312bfda1d2d7b7235945f9c670fefc542f692e370affee400582019c7c7df1d1", kill_on_drop: false }`
[INFO] [stderr]  Documenting einsum-codegen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `prelude_import` is internal to the compiler or standard library
[INFO] [stdout]  --> src/lib.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 |     feature(prelude_import, custom_inner_attributes, proc_macro_hygiene)
[INFO] [stdout]   |             ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout]   = note: `#[warn(internal_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.81s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/einsum_codegen/index.html
[INFO] running `Command { std: "docker" "inspect" "312bfda1d2d7b7235945f9c670fefc542f692e370affee400582019c7c7df1d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "312bfda1d2d7b7235945f9c670fefc542f692e370affee400582019c7c7df1d1", kill_on_drop: false }`
[INFO] [stdout] 312bfda1d2d7b7235945f9c670fefc542f692e370affee400582019c7c7df1d1