[INFO] crate nixcfg 0.2.0 is already in cache
[INFO] testing nixcfg-0.2.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate nixcfg 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate nixcfg 0.2.0 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate nixcfg 0.2.0
[INFO] finished tweaking crates.io crate nixcfg 0.2.0
[INFO] tweaked toml for crates.io crate nixcfg 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fff08d0553ddab6cb338c11daab60493f6986663bb6af40c90676df4ee9e15b0
[INFO] running `"docker" "start" "-a" "fff08d0553ddab6cb338c11daab60493f6986663bb6af40c90676df4ee9e15b0"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling smol_str v0.1.15
[INFO] [stderr]    Compiling arenatree v0.1.3
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling rnix v0.4.2
[INFO] [stderr]    Compiling nixcfg v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         write!(file, "{}", content);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:126:13
[INFO] [stderr]     |
[INFO] [stderr] 126 |             write!(content, "{}", ast);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.09s
[INFO] running `"docker" "inspect" "fff08d0553ddab6cb338c11daab60493f6986663bb6af40c90676df4ee9e15b0"`
[INFO] running `"docker" "rm" "-f" "fff08d0553ddab6cb338c11daab60493f6986663bb6af40c90676df4ee9e15b0"`
[INFO] [stdout] fff08d0553ddab6cb338c11daab60493f6986663bb6af40c90676df4ee9e15b0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stdout] c21aa0d615c167bcf5bc8bf9b987d85f32cbd68455272c908ffb5463e51af7ac
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "c21aa0d615c167bcf5bc8bf9b987d85f32cbd68455272c908ffb5463e51af7ac"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling nixcfg v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/main.rs:344:28
[INFO] [stderr]     |
[INFO] [stderr] 344 |                     value: replace_by
[INFO] [stderr]     |                            ^^^^^^^^^^
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            expected enum `std::option::Option`, found struct `std::string::String`
[INFO] [stderr]     |                            help: try using a variant of the expected enum: `Some(replace_by)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected enum `std::option::Option<std::string::String>`
[INFO] [stderr]              found struct `std::string::String`
[INFO] [stderr] 
[INFO] [stderr] error[E0063]: missing field `keep_eol` in initializer of `Command`
[INFO] [stderr]    --> src/main.rs:342:27
[INFO] [stderr]     |
[INFO] [stderr] 342 |                 let cmd = Command::Set {
[INFO] [stderr]     |                           ^^^^^^^^^^^^ missing `keep_eol`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0063, E0308.
[INFO] [stderr] For more information about an error, try `rustc --explain E0063`.
[INFO] [stderr] error: could not compile `nixcfg`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "c21aa0d615c167bcf5bc8bf9b987d85f32cbd68455272c908ffb5463e51af7ac"`
[INFO] running `"docker" "rm" "-f" "c21aa0d615c167bcf5bc8bf9b987d85f32cbd68455272c908ffb5463e51af7ac"`
[INFO] [stdout] c21aa0d615c167bcf5bc8bf9b987d85f32cbd68455272c908ffb5463e51af7ac