[INFO] fetching crate hstrace 0.0.5...
[INFO] documenting hstrace-0.0.5 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate hstrace 0.0.5 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate hstrace 0.0.5 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 hstrace 0.0.5
[INFO] finished tweaking crates.io crate hstrace 0.0.5
[INFO] tweaked toml for crates.io crate hstrace 0.0.5 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate hstrace 0.0.5 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shlex v1.0.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.26
[INFO] [stderr]   Downloaded clang-sys v1.2.0
[INFO] [stderr]   Downloaded hstrace_derive v0.0.1
[INFO] [stderr]   Downloaded ctrlc v3.1.8
[INFO] [stderr]   Downloaded libloading v0.7.0
[INFO] [stderr]   Downloaded serde_derive v1.0.125
[INFO] [stderr]   Downloaded serde v1.0.125
[INFO] [stderr]   Downloaded env_logger v0.8.3
[INFO] [stderr]   Downloaded regex v1.4.5
[INFO] [stderr]   Downloaded syn v1.0.69
[INFO] [stderr]   Downloaded regex-syntax v0.6.23
[INFO] [stderr]   Downloaded libc v0.2.93
[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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e70e430bf83c22414918399fcac485fd4e7c9a81220ea2b2ea49819143413ac1
[INFO] running `Command { std: "docker" "start" "-a" "e70e430bf83c22414918399fcac485fd4e7c9a81220ea2b2ea49819143413ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e70e430bf83c22414918399fcac485fd4e7c9a81220ea2b2ea49819143413ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e70e430bf83c22414918399fcac485fd4e7c9a81220ea2b2ea49819143413ac1", kill_on_drop: false }`
[INFO] [stdout] e70e430bf83c22414918399fcac485fd4e7c9a81220ea2b2ea49819143413ac1
[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" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 682f5cca45a106da75126d0fce12e2f7996ddd20fccb0f1afe62a5ed3535bc0f
[INFO] running `Command { std: "docker" "start" "-a" "682f5cca45a106da75126d0fce12e2f7996ddd20fccb0f1afe62a5ed3535bc0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling bindgen v0.58.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling libloading v0.7.0
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling shlex v1.0.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling clang-sys v1.2.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling hstrace_derive v0.0.1
[INFO] [stderr]     Checking ctrlc v3.1.8
[INFO] [stderr]    Compiling hstrace v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting hstrace v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:30:1
[INFO] [stdout]    |
[INFO] [stdout] 30 | #![feature(test)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | #![feature(core_intrinsics)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:32:1
[INFO] [stdout]    |
[INFO] [stdout] 32 | #![feature(arbitrary_enum_discriminant)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `arbitrary_enum_discriminant` has been stable since `1.66.0` and no longer requires an attribute to enable
[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 document `hstrace`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2018 --crate-type lib --crate-name hstrace src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7e79f875cb59149b -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-8e8534d6c0fd0e49.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-e5e62c40ac4b64b6.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-263d75a9ca964300.rmeta --extern crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-46e20e74818e155b.rmeta --extern crossbeam_utils=/opt/rustwide/target/debug/deps/libcrossbeam_utils-5214a6c49e0547d1.rmeta --extern ctrlc=/opt/rustwide/target/debug/deps/libctrlc-3db5d2fe183ca7b7.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-c1e4e5446a6372e0.rmeta --extern hstrace_derive=/opt/rustwide/target/debug/deps/libhstrace_derive-3ff47a26c8227690.so --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-e7445b4e8703c20b.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-f0223f3a435bc936.rmeta --extern nix=/opt/rustwide/target/debug/deps/libnix-316a1b7918ad628d.rmeta --extern num_derive=/opt/rustwide/target/debug/deps/libnum_derive-4fff0bd018cddca7.so --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-64b5638e9f9ff5ed.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-58d6588031c22243.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-873e1dbefeb29dc0.rmeta --cap-lints=warn --crate-version 0.0.5` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "682f5cca45a106da75126d0fce12e2f7996ddd20fccb0f1afe62a5ed3535bc0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "682f5cca45a106da75126d0fce12e2f7996ddd20fccb0f1afe62a5ed3535bc0f", kill_on_drop: false }`
[INFO] [stdout] 682f5cca45a106da75126d0fce12e2f7996ddd20fccb0f1afe62a5ed3535bc0f
