[INFO] fetching crate mockiato 0.9.6...
[INFO] checking mockiato-0.9.6 against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] extracting crate mockiato 0.9.6 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate mockiato 0.9.6 on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mockiato 0.9.6
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate mockiato 0.9.6
[INFO] tweaked toml for crates.io crate mockiato 0.9.6 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate mockiato 0.9.6 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" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nameof v1.2.2
[INFO] [stderr]   Downloaded mockiato-codegen v0.9.6
[INFO] [stderr]   Downloaded nearly_eq v0.2.4
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1146823fdbfc7430509656f3868aca1bee3036a2df2bb731f91d094f4fb37642
[INFO] running `Command { std: "docker" "start" "-a" "1146823fdbfc7430509656f3868aca1bee3036a2df2bb731f91d094f4fb37642", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1146823fdbfc7430509656f3868aca1bee3036a2df2bb731f91d094f4fb37642", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1146823fdbfc7430509656f3868aca1bee3036a2df2bb731f91d094f4fb37642", kill_on_drop: false }`
[INFO] [stdout] 1146823fdbfc7430509656f3868aca1bee3036a2df2bb731f91d094f4fb37642
[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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09f2fa066a287ad4a4ed7857bf1fa485f3ac321ce656b99e0547aed390f07526
[INFO] running `Command { std: "docker" "start" "-a" "09f2fa066a287ad4a4ed7857bf1fa485f3ac321ce656b99e0547aed390f07526", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling proc-macro2 v1.0.84
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling unicode-segmentation v1.11.0
[INFO] [stderr]     Checking nameof v1.2.2
[INFO] [stderr]     Checking nearly_eq v0.2.4
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling mockiato-codegen v0.9.6
[INFO] [stderr]    Compiling mockiato v0.9.6 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stdout] error[E0601]: `main` function not found in crate `downcasting`
[INFO] [stdout]   --> examples/downcasting.rs:34:2
[INFO] [stdout]    |
[INFO] [stdout] 34 | }
[INFO] [stdout]    |  ^ consider adding a `main` function to `examples/downcasting.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mockiato` (example "downcasting") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "09f2fa066a287ad4a4ed7857bf1fa485f3ac321ce656b99e0547aed390f07526", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09f2fa066a287ad4a4ed7857bf1fa485f3ac321ce656b99e0547aed390f07526", kill_on_drop: false }`
[INFO] [stdout] 09f2fa066a287ad4a4ed7857bf1fa485f3ac321ce656b99e0547aed390f07526