[INFO] fetching crate relp-bin 0.0.6...
[INFO] documenting relp-bin-0.0.6 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate relp-bin 0.0.6 into /workspace/builds/worker-23/source
[INFO] validating manifest of crates.io crate relp-bin 0.0.6 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 relp-bin 0.0.6
[INFO] finished tweaking crates.io crate relp-bin 0.0.6
[INFO] tweaked toml for crates.io crate relp-bin 0.0.6 written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] crate crates.io crate relp-bin 0.0.6 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clap_derive v3.0.5
[INFO] [stderr]   Downloaded relp v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 402615e3e7de78768736fc3a38af9b323990fc311357166cc0304e078bcae2c4
[INFO] running `Command { std: "docker" "start" "-a" "402615e3e7de78768736fc3a38af9b323990fc311357166cc0304e078bcae2c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "402615e3e7de78768736fc3a38af9b323990fc311357166cc0304e078bcae2c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "402615e3e7de78768736fc3a38af9b323990fc311357166cc0304e078bcae2c4", kill_on_drop: false }`
[INFO] [stdout] 402615e3e7de78768736fc3a38af9b323990fc311357166cc0304e078bcae2c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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] 8f028cf0abbeb7cc4183885ed06d89d016a7d73bb5886dd23528f4f43e98e598
[INFO] running `Command { std: "docker" "start" "-a" "8f028cf0abbeb7cc4183885ed06d89d016a7d73bb5886dd23528f4f43e98e598", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking fixedbitset v0.4.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking gcd v2.0.1
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking fifo-set v1.0.0
[INFO] [stderr]     Checking cumsum v1.0.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/smallvec-1.7.0/src/lib.rs:82:41
[INFO] [stdout]    |
[INFO] [stdout] 82 | #![cfg_attr(feature = "specialization", feature(specialization))]
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smallvec` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "8f028cf0abbeb7cc4183885ed06d89d016a7d73bb5886dd23528f4f43e98e598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f028cf0abbeb7cc4183885ed06d89d016a7d73bb5886dd23528f4f43e98e598", kill_on_drop: false }`
[INFO] [stdout] 8f028cf0abbeb7cc4183885ed06d89d016a7d73bb5886dd23528f4f43e98e598