[INFO] cloning repository https://github.com/sozu-proxy/proxy-test-suite
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sozu-proxy/proxy-test-suite" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsozu-proxy%2Fproxy-test-suite", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsozu-proxy%2Fproxy-test-suite'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 430df91a37e89e8aa80434edbd3740962faabd62
[INFO] documenting sozu-proxy/proxy-test-suite 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%2Fsozu-proxy%2Fproxy-test-suite" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sozu-proxy/proxy-test-suite 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/sozu-proxy/proxy-test-suite
[INFO] finished tweaking git repo https://github.com/sozu-proxy/proxy-test-suite
[INFO] tweaked toml for git repo https://github.com/sozu-proxy/proxy-test-suite written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/sozu-proxy/proxy-test-suite 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 6ff82fd5962afdd4c74db6361aeb46138dc228b218e43ac0201dcb9278685bda
[INFO] running `Command { std: "docker" "start" "-a" "6ff82fd5962afdd4c74db6361aeb46138dc228b218e43ac0201dcb9278685bda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ff82fd5962afdd4c74db6361aeb46138dc228b218e43ac0201dcb9278685bda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ff82fd5962afdd4c74db6361aeb46138dc228b218e43ac0201dcb9278685bda", kill_on_drop: false }`
[INFO] [stdout] 6ff82fd5962afdd4c74db6361aeb46138dc228b218e43ac0201dcb9278685bda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 1e80b5f82656aafd1438bf0d99c9d87af67229b7328fac961d78dbcc1a10051d
[INFO] running `Command { std: "docker" "start" "-a" "1e80b5f82656aafd1438bf0d99c9d87af67229b7328fac961d78dbcc1a10051d", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.36
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking futures v0.1.18
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]     Checking httparse v1.2.4
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.31
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking bytes v0.4.6
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking mio v0.6.13
[INFO] [stderr]     Checking tokio-io v0.1.5
[INFO] [stderr]     Checking tokio-core v0.1.12
[INFO] [stderr]  Documenting proxy-test-suite 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(conservative_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[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 `proxy-test-suite`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name proxy_test_suite src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a525fb0aec4e6b47 -L dependency=/opt/rustwide/target/debug/deps --extern futures=/opt/rustwide/target/debug/deps/libfutures-094735641868f024.rmeta --extern httparse=/opt/rustwide/target/debug/deps/libhttparse-7bf59ac8f98bd2c3.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-9521a3fd6bac8d8e.rmeta --extern tokio_core=/opt/rustwide/target/debug/deps/libtokio_core-6099a91073d29fc3.rmeta --extern tokio_io=/opt/rustwide/target/debug/deps/libtokio_io-782f9e78a04f3764.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "1e80b5f82656aafd1438bf0d99c9d87af67229b7328fac961d78dbcc1a10051d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e80b5f82656aafd1438bf0d99c9d87af67229b7328fac961d78dbcc1a10051d", kill_on_drop: false }`
[INFO] [stdout] 1e80b5f82656aafd1438bf0d99c9d87af67229b7328fac961d78dbcc1a10051d