[INFO] cloning repository https://github.com/AkihiroSasabe/rust_doc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AkihiroSasabe/rust_doc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAkihiroSasabe%2Frust_doc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAkihiroSasabe%2Frust_doc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4811a5eccf492369dfba5b62af16983b6189708a
[INFO] documenting AkihiroSasabe/rust_doc against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAkihiroSasabe%2Frust_doc" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AkihiroSasabe/rust_doc 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 git repo https://github.com/AkihiroSasabe/rust_doc
[INFO] finished tweaking git repo https://github.com/AkihiroSasabe/rust_doc
[INFO] tweaked toml for git repo https://github.com/AkihiroSasabe/rust_doc written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/AkihiroSasabe/rust_doc 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 proconio v0.3.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b2ab77fa7a840677d8a95f708d6431b249ddd93fccd9777ff904368418b12669
[INFO] running `Command { std: "docker" "start" "-a" "b2ab77fa7a840677d8a95f708d6431b249ddd93fccd9777ff904368418b12669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b2ab77fa7a840677d8a95f708d6431b249ddd93fccd9777ff904368418b12669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2ab77fa7a840677d8a95f708d6431b249ddd93fccd9777ff904368418b12669", kill_on_drop: false }`
[INFO] [stdout] b2ab77fa7a840677d8a95f708d6431b249ddd93fccd9777ff904368418b12669
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 84bb0ae9eb955803962de681fd0ddd0a80e4c1d8efea0218096a1bc6c0885c72
[INFO] running `Command { std: "docker" "start" "-a" "84bb0ae9eb955803962de681fd0ddd0a80e4c1d8efea0218096a1bc6c0885c72", kill_on_drop: false }`
[INFO] [stderr]     Checking proconio v0.3.8
[INFO] [stderr]  Documenting rust_doc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rust_doc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: the method `call_box` exists for struct `Box<dyn FnOnce() + Send>`, but its trait bounds were not satisfied
[INFO] [stdout]   --> src/lib.rs:46:69
[INFO] [stdout]    |
[INFO] [stdout] 46 | ...                   job.call_box();
[INFO] [stdout]    |                           ^^^^^^^^ method cannot be called on `Box<dyn FnOnce() + Send>` due to unsatisfied trait bounds
[INFO] [stdout]   --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:242:1
[INFO] [stdout]    |
[INFO] [stdout]    = note: doesn't satisfy `dyn FnOnce() + Send: FnBox`
[INFO] [stdout]    |
[INFO] [stdout]    = note: doesn't satisfy `dyn FnOnce() + Send: Sized`
[INFO] [stdout]    |
[INFO] [stdout] note: trait bound `dyn FnOnce() + Send: Sized` was not satisfied
[INFO] [stdout]   --> src/lib.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<F: FnOnce()> FnBox for F {
[INFO] [stdout]    |      ^            -----     -
[INFO] [stdout]    |      |
[INFO] [stdout]    |      unsatisfied trait bound introduced here
[INFO] [stdout] help: consider relaxing the type parameter's implicit `Sized` bound
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<F: ?Sized + FnOnce()> FnBox for F {
[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 E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_doc` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "84bb0ae9eb955803962de681fd0ddd0a80e4c1d8efea0218096a1bc6c0885c72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84bb0ae9eb955803962de681fd0ddd0a80e4c1d8efea0218096a1bc6c0885c72", kill_on_drop: false }`
[INFO] [stdout] 84bb0ae9eb955803962de681fd0ddd0a80e4c1d8efea0218096a1bc6c0885c72
