[INFO] fetching crate xsm 0.1.2...
[INFO] documenting xsm-0.1.2 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate xsm 0.1.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate xsm 0.1.2 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xsm 0.1.2
[INFO] finished tweaking crates.io crate xsm 0.1.2
[INFO] tweaked toml for crates.io crate xsm 0.1.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded msgpacker-derive v0.3.1
[INFO] [stderr]   Downloaded redis-protocol v4.1.0
[INFO] [stderr]   Downloaded fred v6.3.2
[INFO] [stderr]   Downloaded xxai-msgpacker v0.4.4
[INFO] [stderr]   Downloaded frand v0.7.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41660d37899a8b28ae413d5dcc84cd7a5b9c45d532a920a1951862b04ec5337f
[INFO] running `Command { std: "docker" "start" "-a" "41660d37899a8b28ae413d5dcc84cd7a5b9c45d532a920a1951862b04ec5337f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41660d37899a8b28ae413d5dcc84cd7a5b9c45d532a920a1951862b04ec5337f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41660d37899a8b28ae413d5dcc84cd7a5b9c45d532a920a1951862b04ec5337f", kill_on_drop: false }`
[INFO] [stdout] 41660d37899a8b28ae413d5dcc84cd7a5b9c45d532a920a1951862b04ec5337f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed461d0ba8cf27c0dd05003e8ad573e063b80c8ed16b73f7b863a067b79a4c49
[INFO] running `Command { std: "docker" "start" "-a" "ed461d0ba8cf27c0dd05003e8ad573e063b80c8ed16b73f7b863a067b79a4c49", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling crc16 v0.4.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]    Compiling async-trait v0.1.77
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]    Compiling semver v1.0.21
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking cookie-factory v0.3.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking bytes-utils v0.1.4
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]     Checking sha-1 v0.10.1
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking arcstr v1.1.5
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking arc-swap v1.6.0
[INFO] [stderr]     Checking gethostname v0.4.3
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking frand v0.7.3
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking redis-protocol v4.1.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling msgpacker-derive v0.3.1
[INFO] [stderr]     Checking tokio v1.35.1
[INFO] [stderr]     Checking xxai-msgpacker v0.4.4
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/xxai-msgpacker-0.4.4/src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     iter_array_chunks,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/xxai-msgpacker-0.4.4/src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     maybe_uninit_array_assume_init,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/xxai-msgpacker-0.4.4/src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     maybe_uninit_uninit_array
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 compile `xxai-msgpacker` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ed461d0ba8cf27c0dd05003e8ad573e063b80c8ed16b73f7b863a067b79a4c49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed461d0ba8cf27c0dd05003e8ad573e063b80c8ed16b73f7b863a067b79a4c49", kill_on_drop: false }`
[INFO] [stdout] ed461d0ba8cf27c0dd05003e8ad573e063b80c8ed16b73f7b863a067b79a4c49
