[INFO] fetching crate bsa 0.2.1...
[INFO] documenting bsa-0.2.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate bsa 0.2.1 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate bsa 0.2.1 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 bsa 0.2.1
[INFO] finished tweaking crates.io crate bsa 0.2.1
[INFO] tweaked toml for crates.io crate bsa 0.2.1 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate bsa 0.2.1 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 594fcaea445715f0737f0f67f97178614e79ed5a477224bb85e59951885bd547
[INFO] running `Command { std: "docker" "start" "-a" "594fcaea445715f0737f0f67f97178614e79ed5a477224bb85e59951885bd547", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "594fcaea445715f0737f0f67f97178614e79ed5a477224bb85e59951885bd547", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "594fcaea445715f0737f0f67f97178614e79ed5a477224bb85e59951885bd547", kill_on_drop: false }`
[INFO] [stdout] 594fcaea445715f0737f0f67f97178614e79ed5a477224bb85e59951885bd547
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e605b268679d630d564b5a84086cbb69495c7efbda35cb9d2b42ced47f26193f
[INFO] running `Command { std: "docker" "start" "-a" "e605b268679d630d564b5a84086cbb69495c7efbda35cb9d2b42ced47f26193f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking rle-decode-fast v1.0.1
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling lz4-sys v1.9.2
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking libflate_lz77 v1.1.0
[INFO] [stderr]     Checking libflate v1.1.1
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling enumflags2_derive v0.7.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling bytemuck_derive v1.0.1
[INFO] [stderr]     Checking bytemuck v1.7.2
[INFO] [stderr]     Checking enumflags2 v0.7.1
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling proc-macro-crate v1.1.0
[INFO] [stderr]    Compiling num_enum_derive v0.5.4
[INFO] [stderr]     Checking num_enum v0.5.4
[INFO] [stderr]     Checking lz4 v1.23.2
[INFO] [stderr]  Documenting bsa v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(associated_type_defaults, wrapping_int_impl, specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `bsa`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name bsa src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0d218c3df992ec31 -L dependency=/opt/rustwide/target/debug/deps --extern bytemuck=/opt/rustwide/target/debug/deps/libbytemuck-9182006c7b896d44.rmeta --extern enumflags2=/opt/rustwide/target/debug/deps/libenumflags2-fe6cd2173fb52999.rmeta --extern libflate=/opt/rustwide/target/debug/deps/liblibflate-895eedf586f9c19d.rmeta --extern lz4=/opt/rustwide/target/debug/deps/liblz4-ca8c31de4d1436aa.rmeta --extern num_enum=/opt/rustwide/target/debug/deps/libnum_enum-39338f328679c63a.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-4033d0160df74d78.rmeta --cap-lints=warn --crate-version 0.2.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e605b268679d630d564b5a84086cbb69495c7efbda35cb9d2b42ced47f26193f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e605b268679d630d564b5a84086cbb69495c7efbda35cb9d2b42ced47f26193f", kill_on_drop: false }`
[INFO] [stdout] e605b268679d630d564b5a84086cbb69495c7efbda35cb9d2b42ced47f26193f