[INFO] fetching crate mixpanel 0.1.1...
[INFO] documenting mixpanel-0.1.1 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate mixpanel 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate mixpanel 0.1.1 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mixpanel 0.1.1
[INFO] finished tweaking crates.io crate mixpanel 0.1.1
[INFO] tweaked toml for crates.io crate mixpanel 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: file found to be present in multiple build targets: /workspace/builds/worker-0/source/examples/example.rs
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v0.4.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", 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] b748a982555a78a552aa9e97c8f8ae00a0657f6e50c72cd79e9c37b650f49cbf
[INFO] running `Command { std: "docker" "start" "-a" "b748a982555a78a552aa9e97c8f8ae00a0657f6e50c72cd79e9c37b650f49cbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b748a982555a78a552aa9e97c8f8ae00a0657f6e50c72cd79e9c37b650f49cbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b748a982555a78a552aa9e97c8f8ae00a0657f6e50c72cd79e9c37b650f49cbf", kill_on_drop: false }`
[INFO] [stdout] b748a982555a78a552aa9e97c8f8ae00a0657f6e50c72cd79e9c37b650f49cbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24e5e2dbc1b2a61e57ad295fb010353aa2fd522734163cc212474b6767049279
[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" "24e5e2dbc1b2a61e57ad295fb010353aa2fd522734163cc212474b6767049279", kill_on_drop: false }`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/examples/example.rs
[INFO] [stderr]     Checking bitflags v0.3.3
[INFO] [stderr]     Checking language-tags v0.0.7
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]    Compiling openssl-sys v0.6.7
[INFO] [stderr]     Checking num_cpus v0.2.13
[INFO] [stderr]     Checking hpack v0.2.0
[INFO] [stderr]     Checking uuid v0.1.18
[INFO] [stderr]     Checking serde v0.6.15
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking serde v0.4.3
[INFO] [stderr]     Checking url v0.2.38
[INFO] [stderr]     Checking solicit v0.4.4
[INFO] [stdout] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-0.4.3/src/de/mod.rs:22:48
[INFO] [stdout]     |
[INFO] [stdout] 22  |     fn deserialize<D>(deserializer: &mut D) -> Result<Self, D::Error>
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]     |
[INFO] [stdout] help: consider further restricting `Self`
[INFO] [stdout]     |
[INFO] [stdout] 23  |         where D: Deserializer, Self: Sized;
[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 E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "24e5e2dbc1b2a61e57ad295fb010353aa2fd522734163cc212474b6767049279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24e5e2dbc1b2a61e57ad295fb010353aa2fd522734163cc212474b6767049279", kill_on_drop: false }`
[INFO] [stdout] 24e5e2dbc1b2a61e57ad295fb010353aa2fd522734163cc212474b6767049279
