[INFO] fetching crate pwrs 1.1.0...
[INFO] testing pwrs-1.1.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate pwrs 1.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate pwrs 1.1.0 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 pwrs 1.1.0
[INFO] finished tweaking crates.io crate pwrs 1.1.0
[INFO] tweaked toml for crates.io crate pwrs 1.1.0 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] df1a61d724967874ccc134d822cc27932216020763dafb5961b0d41d2edce8c2
[INFO] running `"docker" "start" "-a" "df1a61d724967874ccc134d822cc27932216020763dafb5961b0d41d2edce8c2"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling pwrs v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0425]: cannot find function `sample` in crate `rand`
[INFO] [stderr]   --> src/main.rs:53:11
[INFO] [stderr]    |
[INFO] [stderr] 53 |     rand::sample(&mut rng, words.iter(), cfg.number)
[INFO] [stderr]    |           ^^^^^^ not found in `rand`
[INFO] [stderr]    |
[INFO] [stderr] help: consider importing this function
[INFO] [stderr]    |
[INFO] [stderr] 9  | use rand::seq::index::sample;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:39:20
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let mut dict = try!(File::open(&cfg.filename));
[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:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     try!(dict.read_to_string(&mut buf));
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/main.rs:130:14
[INFO] [stderr]     |
[INFO] [stderr] 130 |     for _ in (0..cfg.count) {
[INFO] [stderr]     |              ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::slice::<impl [T]>::connect': renamed to join
[INFO] [stderr]    --> src/main.rs:136:25
[INFO] [stderr]     |
[INFO] [stderr] 136 |         let out = inter.connect(" ");
[INFO] [stderr]     |                         ^^^^^^^
[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 E0425`.
[INFO] [stderr] error: could not compile `pwrs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "df1a61d724967874ccc134d822cc27932216020763dafb5961b0d41d2edce8c2"`
[INFO] running `"docker" "rm" "-f" "df1a61d724967874ccc134d822cc27932216020763dafb5961b0d41d2edce8c2"`
[INFO] [stdout] df1a61d724967874ccc134d822cc27932216020763dafb5961b0d41d2edce8c2