[INFO] fetching crate fl2rust 0.4.3...
[INFO] checking fl2rust-0.4.3 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate fl2rust 0.4.3 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate fl2rust 0.4.3 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fl2rust 0.4.3
[INFO] finished tweaking crates.io crate fl2rust 0.4.3
[INFO] tweaked toml for crates.io crate fl2rust 0.4.3 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate fl2rust 0.4.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1cc94546e71f6dbe7e6ddefc2df090721238fe09438db8fa7f1ab619eca714e
[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" "e1cc94546e71f6dbe7e6ddefc2df090721238fe09438db8fa7f1ab619eca714e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1cc94546e71f6dbe7e6ddefc2df090721238fe09438db8fa7f1ab619eca714e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1cc94546e71f6dbe7e6ddefc2df090721238fe09438db8fa7f1ab619eca714e", kill_on_drop: false }`
[INFO] [stdout] e1cc94546e71f6dbe7e6ddefc2df090721238fe09438db8fa7f1ab619eca714e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9791dbed70a5b875859556ecb394e57d2af868b4bef005ae38598000c3b135d
[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" "a9791dbed70a5b875859556ecb394e57d2af868b4bef005ae38598000c3b135d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling libc v0.2.96
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking fl2rust v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]    Compiling fltk-sys v1.0.17
[INFO] [stderr]    Compiling fltk-derive v1.0.17
[INFO] [stderr]     Checking fltk v1.0.18
[INFO] [stdout] error[E0601]: `main` function not found in crate `myuifile`
[INFO] [stdout]   --> examples/myuifile.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout] 3  | / #![allow(unused_variables)]
[INFO] [stdout] 4  | | #![allow(unused_mut)]
[INFO] [stdout] 5  | | #![allow(unused_imports)]
[INFO] [stdout] 6  | | #![allow(clippy::needless_update)]
[INFO] [stdout] ...  |
[INFO] [stdout] 95 | |     }
[INFO] [stdout] 96 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `examples/myuifile.rs`
[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 E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fl2rust` 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" "a9791dbed70a5b875859556ecb394e57d2af868b4bef005ae38598000c3b135d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9791dbed70a5b875859556ecb394e57d2af868b4bef005ae38598000c3b135d", kill_on_drop: false }`
[INFO] [stdout] a9791dbed70a5b875859556ecb394e57d2af868b4bef005ae38598000c3b135d