[INFO] fetching crate feaders 0.2.0...
[INFO] testing feaders-0.2.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate feaders 0.2.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate feaders 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 feaders 0.2.0
[INFO] finished tweaking crates.io crate feaders 0.2.0
[INFO] tweaked toml for crates.io crate feaders 0.2.0 written to /workspace/builds/worker-3/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] [stderr] warning: unused manifest key: package.license_file
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] bbd3843456dac9f2c15667f4f43d1ef8b0c29aa6794c7d5927561585ec5df473
[INFO] running `"docker" "start" "-a" "bbd3843456dac9f2c15667f4f43d1ef8b0c29aa6794c7d5927561585ec5df473"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused manifest key: package.license_file
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling walkdir v0.1.8
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling feaders v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:81:21
[INFO] [stderr]    |
[INFO] [stderr] 81 |         let mut f = try!(File::open(&self.path));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |         try!(f.read_to_string(&mut s));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:160:17
[INFO] [stderr]     |
[INFO] [stderr] 160 |     let mut f = try!(File::open(file));
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:162:5
[INFO] [stderr]     |
[INFO] [stderr] 162 |     try!(f.read_to_string(&mut s));
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0283]: type annotations needed
[INFO] [stderr]   --> src/utils.rs:18:32
[INFO] [stderr]    |
[INFO] [stderr] 18 |                 let strref = c.as_ref();
[INFO] [stderr]    |                                ^^^^^^ cannot infer type for enum `std::path::Component<'_>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: cannot satisfy `std::path::Component<'_>: std::convert::AsRef<_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0283`.
[INFO] [stderr] error: could not compile `feaders`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "bbd3843456dac9f2c15667f4f43d1ef8b0c29aa6794c7d5927561585ec5df473"`
[INFO] running `"docker" "rm" "-f" "bbd3843456dac9f2c15667f4f43d1ef8b0c29aa6794c7d5927561585ec5df473"`
[INFO] [stdout] bbd3843456dac9f2c15667f4f43d1ef8b0c29aa6794c7d5927561585ec5df473