[INFO] fetching crate corundum 0.4.1...
[INFO] documenting corundum-0.4.1 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate corundum 0.4.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate corundum 0.4.1 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate corundum 0.4.1
[INFO] finished tweaking crates.io crate corundum 0.4.1
[INFO] tweaked toml for crates.io crate corundum 0.4.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate corundum 0.4.1 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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num v0.4.0
[INFO] [stderr]   Downloaded term v0.6.1
[INFO] [stderr]   Downloaded libc v0.2.124
[INFO] [stderr]   Downloaded crndm_derive v0.1.1
[INFO] [stderr]   Downloaded term-painter v0.3.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e731eef3379f501952b1b33b814e170ec5deb8b635394f31c806e29ce4951c45
[INFO] running `Command { std: "docker" "start" "-a" "e731eef3379f501952b1b33b814e170ec5deb8b635394f31c806e29ce4951c45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e731eef3379f501952b1b33b814e170ec5deb8b635394f31c806e29ce4951c45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e731eef3379f501952b1b33b814e170ec5deb8b635394f31c806e29ce4951c45", kill_on_drop: false }`
[INFO] [stdout] e731eef3379f501952b1b33b814e170ec5deb8b635394f31c806e29ce4951c45
[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=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a517812ac035bedaad67c46b14bae40cf8c79159f82f1d491c6a76bfb79be042
[INFO] running `Command { std: "docker" "start" "-a" "a517812ac035bedaad67c46b14bae40cf8c79159f82f1d491c6a76bfb79be042", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking term-painter v0.3.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.2
[INFO] [stderr]    Compiling crndm_derive v0.1.1
[INFO] [stderr]  Documenting corundum v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]    --> src/lib.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout] 105 | #![feature(untagged_unions)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]     |
[INFO] [stdout]     = note: unions with `Copy` and `ManuallyDrop` fields are stable; there is no intent to stabilize more
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[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 E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `corundum`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2018 --crate-type lib --crate-name corundum src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="cbindings"' --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=d7819f6882550cf5 -L dependency=/opt/rustwide/target/debug/deps --extern crndm_derive=/opt/rustwide/target/debug/deps/libcrndm_derive-5240a64aabb3c10a.so --extern impl_trait_for_tuples=/opt/rustwide/target/debug/deps/libimpl_trait_for_tuples-bc4df73bef866642.so --extern libc=/opt/rustwide/target/debug/deps/liblibc-328a4ce82f63970c.rmeta --extern memmap=/opt/rustwide/target/debug/deps/libmemmap-a03565f8398a7eda.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-73d1385eec318e81.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-bf8ab10f070294eb.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-178e7fb632005fef.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-1416f744c554d98a.rmeta --extern term_painter=/opt/rustwide/target/debug/deps/libterm_painter-b5a9a00f54345610.rmeta --cap-lints=warn --crate-version 0.4.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "a517812ac035bedaad67c46b14bae40cf8c79159f82f1d491c6a76bfb79be042", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a517812ac035bedaad67c46b14bae40cf8c79159f82f1d491c6a76bfb79be042", kill_on_drop: false }`
[INFO] [stdout] a517812ac035bedaad67c46b14bae40cf8c79159f82f1d491c6a76bfb79be042
