[INFO] cloning repository https://github.com/divvun/derive-collect-docs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/divvun/derive-collect-docs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdivvun%2Fderive-collect-docs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdivvun%2Fderive-collect-docs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8ca4647315cf85f142bdcfde8709e6dbbdecd6e
[INFO] testing divvun/derive-collect-docs against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdivvun%2Fderive-collect-docs" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/divvun/derive-collect-docs on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/divvun/derive-collect-docs
[INFO] finished tweaking git repo https://github.com/divvun/derive-collect-docs
[INFO] tweaked toml for git repo https://github.com/divvun/derive-collect-docs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/divvun/derive-collect-docs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd6363f5c9875ec77e0cd941b92c9845debbd7eafcc09cf28cb59c6815414adb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fd6363f5c9875ec77e0cd941b92c9845debbd7eafcc09cf28cb59c6815414adb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd6363f5c9875ec77e0cd941b92c9845debbd7eafcc09cf28cb59c6815414adb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd6363f5c9875ec77e0cd941b92c9845debbd7eafcc09cf28cb59c6815414adb", kill_on_drop: false }`
[INFO] [stdout] fd6363f5c9875ec77e0cd941b92c9845debbd7eafcc09cf28cb59c6815414adb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fa298d4527c1ab3a20837f897d14075dda3b81e1b4d285457d6b97d32163431
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1fa298d4527c1ab3a20837f897d14075dda3b81e1b4d285457d6b97d32163431", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling once_cell v1.3.1
[INFO] [stderr]    Compiling unindent v0.1.5
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling regex v1.3.6
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling derive-collect-docs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.26s
[INFO] running `Command { std: "docker" "inspect" "1fa298d4527c1ab3a20837f897d14075dda3b81e1b4d285457d6b97d32163431", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fa298d4527c1ab3a20837f897d14075dda3b81e1b4d285457d6b97d32163431", kill_on_drop: false }`
[INFO] [stdout] 1fa298d4527c1ab3a20837f897d14075dda3b81e1b4d285457d6b97d32163431
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--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] bfdfe20b65410989092f5d286701550c0f5299eb99ac2f9e737c37f525e502c6
[INFO] running `Command { std: "docker" "start" "-a" "bfdfe20b65410989092f5d286701550c0f5299eb99ac2f9e737c37f525e502c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling serde_yaml v0.8.11
[INFO] [stderr]    Compiling derive-collect-docs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: proc-macro derive panicked
[INFO] [stdout]   --> examples/foo.rs:13:37
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[derive(Debug, serde::Deserialize, CollectDocs)]
[INFO] [stdout]    |                                     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: message: could not create directory ./docs/generated: Os { code: 30, kind: Other, message: "Read-only file system" }
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> examples/foo.rs:5:3
[INFO] [stdout]    |
[INFO] [stdout] 5  | #[example(
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 | #[derive(Debug, serde::Deserialize, CollectDocs)]
[INFO] [stdout]    |                                     ----------- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `derive-collect-docs`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "bfdfe20b65410989092f5d286701550c0f5299eb99ac2f9e737c37f525e502c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfdfe20b65410989092f5d286701550c0f5299eb99ac2f9e737c37f525e502c6", kill_on_drop: false }`
[INFO] [stdout] bfdfe20b65410989092f5d286701550c0f5299eb99ac2f9e737c37f525e502c6