[INFO] cloning repository https://github.com/Lymia/sylph-verifier
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lymia/sylph-verifier" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLymia%2Fsylph-verifier", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLymia%2Fsylph-verifier'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1d989efad9436915f706d6baaab5752f308d968a
[INFO] documenting Lymia/sylph-verifier against 1.76.0 for beta-1.77-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLymia%2Fsylph-verifier" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lymia/sylph-verifier on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Lymia/sylph-verifier
[INFO] finished tweaking git repo https://github.com/Lymia/sylph-verifier
[INFO] tweaked toml for git repo https://github.com/Lymia/sylph-verifier written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Lymia/sylph-verifier already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/Amanieu/parking_lot`
[INFO] [stderr]     Updating git repository `https://github.com/withoutboats/failure.git`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/Lymia/serenity.git`
[INFO] [stderr]     Updating git repository `https://github.com/withoutboats/display_derive`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mortal v0.1.5
[INFO] [stderr]   Downloaded terminfo v0.6.1
[INFO] [stderr]   Downloaded thread-id v4.0.0
[INFO] [stderr]   Downloaded futf v0.1.4
[INFO] [stderr]   Downloaded antidote v1.0.0
[INFO] [stderr]   Downloaded security-framework-sys v2.5.0
[INFO] [stderr]   Downloaded mime_guess v1.8.8
[INFO] [stderr]   Downloaded crypto-mac v0.9.1
[INFO] [stderr]   Downloaded git2 v0.10.2
[INFO] [stderr]   Downloaded rusqlite v0.23.1
[INFO] [stderr]   Downloaded windows_i686_gnu v0.29.0
[INFO] [stderr]   Downloaded libsqlite3-sys v0.18.0
[INFO] [stderr]   Downloaded html5ever v0.25.1
[INFO] [stderr]   Downloaded windows-sys v0.29.0
[INFO] [stderr]   Downloaded nix v0.7.0
[INFO] [stderr]   Downloaded linefeed v0.5.4
[INFO] [stderr]   Downloaded smallstr v0.1.0
[INFO] [stderr]   Downloaded libgit2-sys v0.9.2
[INFO] [stderr]   Downloaded windows_i686_msvc v0.29.0
[INFO] [stderr]   Downloaded libc v0.2.114
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.29.0
[INFO] [stderr]   Downloaded libssh2-sys v0.2.23
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.29.0
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.29.0
[INFO] [stderr]   Downloaded string_cache v0.8.2
[INFO] [stderr]   Downloaded string_cache_codegen v0.5.1
[INFO] [stderr]   Downloaded scraper v0.12.0
[INFO] [stderr]   Downloaded multipart v0.13.6
[INFO] [stderr]   Downloaded websocket v0.26.2
[INFO] [stderr]   Downloaded security-framework v2.5.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.6
[INFO] [stderr]   Downloaded hmac v0.9.0
[INFO] [stderr]   Downloaded markup5ever v0.10.1
[INFO] [stderr]   Downloaded tendril v0.4.2
[INFO] [stderr]   Downloaded crc32fast v1.3.1
[INFO] [stderr]   Downloaded hyper-native-tls v0.3.0
[INFO] [stderr]   Downloaded websocket-base v0.26.2
[INFO] [stderr]   Downloaded rustc_version v0.1.7
[INFO] [stderr]   Downloaded synstructure v0.6.1
[INFO] [stderr]   Downloaded siphasher v0.3.9
[INFO] [stderr]   Downloaded bitflags v0.4.0
[INFO] [stderr]   Downloaded semver v0.1.20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27b12cf4628f45d707655dea4c92d2aa57bc22f3bf0a690a8ef12b2c58206454
[INFO] running `Command { std: "docker" "start" "-a" "27b12cf4628f45d707655dea4c92d2aa57bc22f3bf0a690a8ef12b2c58206454", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27b12cf4628f45d707655dea4c92d2aa57bc22f3bf0a690a8ef12b2c58206454", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27b12cf4628f45d707655dea4c92d2aa57bc22f3bf0a690a8ef12b2c58206454", kill_on_drop: false }`
[INFO] [stdout] 27b12cf4628f45d707655dea4c92d2aa57bc22f3bf0a690a8ef12b2c58206454
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 417d764598b0d3ab2c59e29813addb3ac1b8492afd74601ae84541f8e01a1d10
[INFO] running `Command { std: "docker" "start" "-a" "417d764598b0d3ab2c59e29813addb3ac1b8492afd74601ae84541f8e01a1d10", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.114
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling siphasher v0.3.9
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.5 (https://github.com/Amanieu/parking_lot?rev=8019473#80194730)
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking thread-id v4.0.0
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]     Checking lock_api v0.4.5 (https://github.com/Amanieu/parking_lot?rev=8019473#80194730)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/parking_lot-10afde9c7055db59/8019473/lock_api/src/lib.rs:93:34
[INFO] [stdout]    |
[INFO] [stdout] 93 | #![cfg_attr(feature = "nightly", feature(const_fn_trait_bound))]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `const_fn_trait_bound` has been stable since `1.61.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stdout] error: aborting due to 1 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 `lock_api` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "417d764598b0d3ab2c59e29813addb3ac1b8492afd74601ae84541f8e01a1d10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "417d764598b0d3ab2c59e29813addb3ac1b8492afd74601ae84541f8e01a1d10", kill_on_drop: false }`
[INFO] [stdout] 417d764598b0d3ab2c59e29813addb3ac1b8492afd74601ae84541f8e01a1d10
