[INFO] cloning repository https://github.com/tomafro/flashlight
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tomafro/flashlight" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomafro%2Fflashlight", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomafro%2Fflashlight'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e7529d89eb9d97841151555e04a68763e7d1b0c0
[INFO] testing tomafro/flashlight against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomafro%2Fflashlight" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomafro/flashlight on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tomafro/flashlight
[INFO] finished tweaking git repo https://github.com/tomafro/flashlight
[INFO] tweaked toml for git repo https://github.com/tomafro/flashlight written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/tomafro/flashlight already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unindent v0.1.2
[INFO] [stderr]   Downloaded indoc v0.2.3
[INFO] [stderr]   Downloaded indoc-impl v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ac63a9b187cd36a95ed42631fc4891671480ef5116831c4281e2e5e722f7339b
[INFO] running `Command { std: "docker" "start" "-a" "ac63a9b187cd36a95ed42631fc4891671480ef5116831c4281e2e5e722f7339b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac63a9b187cd36a95ed42631fc4891671480ef5116831c4281e2e5e722f7339b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac63a9b187cd36a95ed42631fc4891671480ef5116831c4281e2e5e722f7339b", kill_on_drop: false }`
[INFO] [stdout] ac63a9b187cd36a95ed42631fc4891671480ef5116831c4281e2e5e722f7339b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ebf12889d211527e2ce9270b420a6944cc4ecd9915993e8d3ceab4f8d233fed1
[INFO] running `Command { std: "docker" "start" "-a" "ebf12889d211527e2ce9270b420a6944cc4ecd9915993e8d3ceab4f8d233fed1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.0
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]    Compiling unindent v0.1.2
[INFO] [stderr]    Compiling serde v1.0.34
[INFO] [stderr]    Compiling itoa v0.4.1
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v0.2.3
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling regex-syntax v0.5.3
[INFO] [stderr]    Compiling isatty v0.1.6
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling quote v0.4.2
[INFO] [stderr]    Compiling proc-macro-hack v0.4.0
[INFO] [stderr]    Compiling indoc-impl v0.2.3
[INFO] [stderr]    Compiling syn v0.12.14
[INFO] [stderr]    Compiling indoc v0.2.3
[INFO] [stderr]    Compiling serde_derive_internals v0.22.0
[INFO] [stderr]    Compiling serde_derive v1.0.34
[INFO] [stderr]    Compiling serde_json v1.0.13
[INFO] [stderr]    Compiling docopt v0.8.3
[INFO] [stderr]    Compiling flashlight v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/reader.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub input: Box<BufRead>,
[INFO] [stdout]   |                    ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stdout]   --> src/parser.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 | /         lazy_static! {
[INFO] [stdout] 67 | |             static ref SPLITTER: Regex =
[INFO] [stdout] 68 | |                 Regex::new(r"^\[([^\]]+)\](?: \[[^\]]+\])? \[([a-z0-9]+…|[a-f0-9-]+)\]").unwrap();
[INFO] [stdout] 69 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flashlight`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ebf12889d211527e2ce9270b420a6944cc4ecd9915993e8d3ceab4f8d233fed1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebf12889d211527e2ce9270b420a6944cc4ecd9915993e8d3ceab4f8d233fed1", kill_on_drop: false }`
[INFO] [stdout] ebf12889d211527e2ce9270b420a6944cc4ecd9915993e8d3ceab4f8d233fed1