[INFO] crate enum_coder 0.0.0 is already in cache
[INFO] checking enum_coder-0.0.0 against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] extracting crate enum_coder 0.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate enum_coder 0.0.0 on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate enum_coder 0.0.0
[INFO] finished tweaking crates.io crate enum_coder 0.0.0
[INFO] tweaked toml for crates.io crate enum_coder 0.0.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d280e02e46d4693b8a92fbd5ecfcd1ce08625ddff5ca99ca05f90846decf5fad
[INFO] running `"docker" "start" "-a" "d280e02e46d4693b8a92fbd5ecfcd1ce08625ddff5ca99ca05f90846decf5fad"`
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]     Checking enum_coder v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the feature `bind_by_move_pattern_guards` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:33
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro_def_site, bind_by_move_pattern_guards)]
[INFO] [stderr]   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `bind_by_move_pattern_guards` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:33
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro_def_site, bind_by_move_pattern_guards)]
[INFO] [stderr]   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `bind_by_move_pattern_guards` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:33
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro_def_site, bind_by_move_pattern_guards)]
[INFO] [stderr]   |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `simple`
[INFO] [stderr]   --> examples/simple.rs:1:1
[INFO] [stderr]    |
[INFO] [stderr] 1  | / extern crate enum_coder;
[INFO] [stderr] 2  | |
[INFO] [stderr] 3  | | use enum_coder::enum_coder;
[INFO] [stderr] 4  | |
[INFO] [stderr] ...  |
[INFO] [stderr] 90 | |     )
[INFO] [stderr] 91 | | }
[INFO] [stderr]    | |_^ consider adding a `main` function to `examples/simple.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `enum_coder`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d280e02e46d4693b8a92fbd5ecfcd1ce08625ddff5ca99ca05f90846decf5fad"`
[INFO] running `"docker" "rm" "-f" "d280e02e46d4693b8a92fbd5ecfcd1ce08625ddff5ca99ca05f90846decf5fad"`
[INFO] [stdout] d280e02e46d4693b8a92fbd5ecfcd1ce08625ddff5ca99ca05f90846decf5fad