[INFO] updating cached repository https://github.com/nthorne/rssnek
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f877f5d1f4cc38ec22df1690e51d0566d57837c3
[INFO] checking nthorne/rssnek against master#bd0bacc694d7d8175804bb6f690cb846bfa4a9ee for pr-71665
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnthorne%2Frssnek" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nthorne/rssnek on toolchain bd0bacc694d7d8175804bb6f690cb846bfa4a9ee
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/nthorne/rssnek
[INFO] finished tweaking git repo https://github.com/nthorne/rssnek
[INFO] tweaked toml for git repo https://github.com/nthorne/rssnek written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/nthorne/rssnek already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "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] 72cf5b4989a12b8c544d714694a1f273c6396335996eaf1a55aa2d71003f2517
[INFO] running `"docker" "start" "-a" "72cf5b4989a12b8c544d714694a1f273c6396335996eaf1a55aa2d71003f2517"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]     Checking slog v1.7.1
[INFO] [stderr]     Checking lazy_static v0.2.9
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]     Checking serde v1.0.20
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking isatty v0.1.5
[INFO] [stderr]    Compiling serde_derive_internals v0.17.0
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking slog-extra v0.1.2
[INFO] [stderr]     Checking slog-serde v1.0.0-alpha9
[INFO] [stderr]    Compiling ncurses v5.86.0
[INFO] [stderr]     Checking slog-stream v1.2.1
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]    Compiling serde_derive v1.0.20
[INFO] [stderr]     Checking num v0.1.40
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking slog-json v1.2.1
[INFO] [stderr]     Checking slog-term v1.5.0
[INFO] [stderr]     Checking serde_json v1.0.6
[INFO] [stderr]     Checking rssnek v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary braces around method argument
[INFO] [stderr]   --> src/game/mod.rs:35:23
[INFO] [stderr]    |
[INFO] [stderr] 35 |             .and_then({|_| String::from_utf8(buf).map_err(ErrSum::ParseError)})
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around method argument
[INFO] [stderr]   --> src/game/mod.rs:34:23
[INFO] [stderr]    |
[INFO] [stderr] 34 |             .and_then({|mut s| s.read_to_end(&mut buf).map_err(ErrSum::FileError)})
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around method argument
[INFO] [stderr]   --> src/game/mod.rs:35:23
[INFO] [stderr]    |
[INFO] [stderr] 35 |             .and_then({|_| String::from_utf8(buf).map_err(ErrSum::ParseError)})
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around method argument
[INFO] [stderr]   --> src/game/mod.rs:34:23
[INFO] [stderr]    |
[INFO] [stderr] 34 |             .and_then({|mut s| s.read_to_end(&mut buf).map_err(ErrSum::FileError)})
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.12s
[INFO] running `"docker" "inspect" "72cf5b4989a12b8c544d714694a1f273c6396335996eaf1a55aa2d71003f2517"`
[INFO] running `"docker" "rm" "-f" "72cf5b4989a12b8c544d714694a1f273c6396335996eaf1a55aa2d71003f2517"`
[INFO] [stdout] 72cf5b4989a12b8c544d714694a1f273c6396335996eaf1a55aa2d71003f2517