[INFO] cloning repository https://github.com/Joey9801/pewter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Joey9801/pewter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoey9801%2Fpewter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoey9801%2Fpewter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b867bfcecebb67a4274fe895afb0a6b7a7875b2f
[INFO] documenting Joey9801/pewter against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoey9801%2Fpewter" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Joey9801/pewter 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 git repo https://github.com/Joey9801/pewter
[INFO] finished tweaking git repo https://github.com/Joey9801/pewter
[INFO] tweaked toml for git repo https://github.com/Joey9801/pewter written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Joey9801/pewter 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 governor v0.3.2
[INFO] [stderr]   Downloaded nonzero_ext v0.2.0
[INFO] [stderr]   Downloaded clap_derive v3.0.0-rc.7
[INFO] [stderr]   Downloaded clap v3.0.0-rc.7
[INFO] [stderr]   Downloaded quanta v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 8cd13e738074f2dd3a6f3f64f0366463e5dd425206fba4568677b46a43465f5a
[INFO] running `Command { std: "docker" "start" "-a" "8cd13e738074f2dd3a6f3f64f0366463e5dd425206fba4568677b46a43465f5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cd13e738074f2dd3a6f3f64f0366463e5dd425206fba4568677b46a43465f5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cd13e738074f2dd3a6f3f64f0366463e5dd425206fba4568677b46a43465f5a", kill_on_drop: false }`
[INFO] [stdout] 8cd13e738074f2dd3a6f3f64f0366463e5dd425206fba4568677b46a43465f5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] d89887ac7cf9f615e0a1733629de92875260c94b5365d0c2036594bda474acb8
[INFO] running `Command { std: "docker" "start" "-a" "d89887ac7cf9f615e0a1733629de92875260c94b5365d0c2036594bda474acb8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]    Compiling serde_derive v1.0.132
[INFO] [stderr]    Compiling siphasher v0.3.7
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling anyhow v1.0.51
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking futures-sink v0.3.19
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking futures-io v0.3.19
[INFO] [stderr]    Compiling zstd-safe v4.1.2+zstd.1.5.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking thin-slice v0.1.1
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking ego-tree v0.6.2
[INFO] [stderr]     Checking nonzero_ext v0.2.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]     Checking http v0.2.5
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stderr]     Checking dtoa-short v0.3.3
[INFO] [stderr]     Checking crossbeam-utils v0.8.5
[INFO] [stderr]     Checking tendril v0.4.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking fern v0.6.0
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking getrandom v0.2.3
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[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking quanta v0.4.1
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking no-std-compat v0.4.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking dashmap v4.0.2
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]    Compiling rand v0.7.3
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[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling zstd-sys v1.6.2+zstd.1.5.1
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling pewter-core v0.1.0 (/opt/rustwide/workdir/crates/pewter-core)
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling selectors v0.22.0
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling markup5ever v0.10.1
[INFO] [stderr]    Compiling futures-macro v0.3.19
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling variant_count v1.1.0
[INFO] [stderr]    Compiling cssparser v0.27.2
[INFO] [stderr]    Compiling cssparser-macros v0.6.0
[INFO] [stderr]    Compiling clap_derive v3.0.0-rc.7
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking tokio v1.15.0
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking clap v3.0.0-rc.7
[INFO] [stderr]     Checking futures-executor v0.3.19
[INFO] [stderr]     Checking futures v0.3.19
[INFO] [stderr]     Checking governor v0.3.2
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.9
[INFO] [stderr]     Checking string_cache v0.8.2
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]  Documenting pewter-core v0.1.0 (/opt/rustwide/workdir/crates/pewter-core)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> crates/pewter-core/src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(const_eval_limit)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> crates/pewter-core/src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(const_eval_limit)]
[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 `pewter-core`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name pewter_core crates/pewter-core/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=daa81b19d976d6fd -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-2b51f40009cfbc32.rmeta --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-1bd22f1176b54d7c.rmeta --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-22d7f70832a3b85e.rmeta --extern crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-0f9cc3f156718306.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-1e3c371ab90a7930.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-1972e45fd417f943.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-49cf5d6436b0971d.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-4071bca0a3c8991f.rmeta --extern variant_count=/opt/rustwide/target/debug/deps/libvariant_count-45015332d3123acf.so --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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 `pewter-core` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d89887ac7cf9f615e0a1733629de92875260c94b5365d0c2036594bda474acb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d89887ac7cf9f615e0a1733629de92875260c94b5365d0c2036594bda474acb8", kill_on_drop: false }`
[INFO] [stdout] d89887ac7cf9f615e0a1733629de92875260c94b5365d0c2036594bda474acb8