[INFO] cloning repository https://github.com/hinohi/test-serde
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hinohi/test-serde" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhinohi%2Ftest-serde", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhinohi%2Ftest-serde'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1dca2342baccdeee5f19e9012a989702d0db4b5a
[INFO] documenting hinohi/test-serde against 1.69.0 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhinohi%2Ftest-serde" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hinohi/test-serde on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hinohi/test-serde
[INFO] finished tweaking git repo https://github.com/hinohi/test-serde
[INFO] tweaked toml for git repo https://github.com/hinohi/test-serde written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hinohi/test-serde 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" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ron v0.4.0
[INFO] [stderr]   Downloaded serde-pickle v0.4.1
[INFO] [stderr]   Downloaded iter-read v0.1.0
[INFO] [stderr]   Downloaded serde_yaml v0.8.5
[INFO] [stderr]   Downloaded serde_json v1.0.31
[INFO] [stderr]   Downloaded syn v0.15.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b92c3f6e50c26abd6968cbc645045da61a69050f3c3eeafe378ba18e99e7372d
[INFO] running `Command { std: "docker" "start" "-a" "b92c3f6e50c26abd6968cbc645045da61a69050f3c3eeafe378ba18e99e7372d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b92c3f6e50c26abd6968cbc645045da61a69050f3c3eeafe378ba18e99e7372d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b92c3f6e50c26abd6968cbc645045da61a69050f3c3eeafe378ba18e99e7372d", kill_on_drop: false }`
[INFO] [stdout] b92c3f6e50c26abd6968cbc645045da61a69050f3c3eeafe378ba18e99e7372d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0bf356ada727927a15b92f8b87bc8fda825c05d17fa068fdbd894a2f875b8e8
[INFO] running `Command { std: "docker" "start" "-a" "f0bf356ada727927a15b92f8b87bc8fda825c05d17fa068fdbd894a2f875b8e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.19
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking safemem v0.3.0
[INFO] [stderr]     Checking iter-read v0.1.0
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking yaml-rust v0.4.2
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.15.7
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking rmp v0.8.7
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]    Compiling serde_derive v1.0.79
[INFO] [stderr]     Checking serde_json v1.0.31
[INFO] [stderr]     Checking toml v0.4.8
[INFO] [stderr]     Checking serde_yaml v0.8.5
[INFO] [stderr]     Checking serde-pickle v0.4.1
[INFO] [stderr]     Checking rmp-serde v0.13.7
[INFO] [stderr]     Checking ron v0.4.0
[INFO] [stderr]  Documenting serde-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[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 document `serde-test`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name serde_test src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=7950bb760fd8e4e4 -L dependency=/opt/rustwide/target/debug/deps --extern rmp_serde=/opt/rustwide/target/debug/deps/librmp_serde-3ad6008aaf02f79a.rmeta --extern ron=/opt/rustwide/target/debug/deps/libron-b81fa4db72b83965.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-decb88dd88aad824.rmeta --extern serde_pickle=/opt/rustwide/target/debug/deps/libserde_pickle-7d660436d519ed3c.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-c51ee5e6aa1b8a90.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-11da30b50da3b5be.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-0873786e7078fbff.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-4f23132264106f93.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "f0bf356ada727927a15b92f8b87bc8fda825c05d17fa068fdbd894a2f875b8e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0bf356ada727927a15b92f8b87bc8fda825c05d17fa068fdbd894a2f875b8e8", kill_on_drop: false }`
[INFO] [stdout] f0bf356ada727927a15b92f8b87bc8fda825c05d17fa068fdbd894a2f875b8e8
