[INFO] fetching crate syr 0.1.0...
[INFO] documenting syr-0.1.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate syr 0.1.0 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate syr 0.1.0 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 syr 0.1.0
[INFO] finished tweaking crates.io crate syr 0.1.0
[INFO] tweaked toml for crates.io crate syr 0.1.0 written to /workspace/builds/worker-30/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] 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] fd7c6dc596121e346d36dab069d283a5379f4bcbe57d1cf7d49dc1f01daff450
[INFO] running `Command { std: "docker" "start" "-a" "fd7c6dc596121e346d36dab069d283a5379f4bcbe57d1cf7d49dc1f01daff450", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd7c6dc596121e346d36dab069d283a5379f4bcbe57d1cf7d49dc1f01daff450", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd7c6dc596121e346d36dab069d283a5379f4bcbe57d1cf7d49dc1f01daff450", kill_on_drop: false }`
[INFO] [stdout] fd7c6dc596121e346d36dab069d283a5379f4bcbe57d1cf7d49dc1f01daff450
[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] e84d2736dc38880ad6a29f68afcf67d047a53f3408e236b0fbe2e1b677607496
[INFO] running `Command { std: "docker" "start" "-a" "e84d2736dc38880ad6a29f68afcf67d047a53f3408e236b0fbe2e1b677607496", kill_on_drop: false }`
[INFO] [stderr]  Documenting syr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(unsafe_no_drop_flag)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `alloc::heap`
[INFO] [stdout]  --> src/matrix/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use alloc::heap;
[INFO] [stdout]   |     ^^^^^^^^^^^ no `heap` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `std::num::Zero`, `std::num::One`
[INFO] [stdout]  --> src/matrix/mod.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::num::{Zero, One};
[INFO] [stdout]   |                ^^^^  ^^^ no `One` in `num`
[INFO] [stdout]   |                |
[INFO] [stdout]   |                no `Zero` in `num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `unsafe_no_drop_flag` in this scope
[INFO] [stdout]   --> src/matrix/mod.rs:15:3
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[unsafe_no_drop_flag] // Omit the drop flag byte, we use rows as the flag
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `syr`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name syr src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3c717ba24e17d685 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e84d2736dc38880ad6a29f68afcf67d047a53f3408e236b0fbe2e1b677607496", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e84d2736dc38880ad6a29f68afcf67d047a53f3408e236b0fbe2e1b677607496", kill_on_drop: false }`
[INFO] [stdout] e84d2736dc38880ad6a29f68afcf67d047a53f3408e236b0fbe2e1b677607496