[INFO] cloning repository https://github.com/ahouts/rwc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ahouts/rwc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahouts%2Frwc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahouts%2Frwc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f8d8d1e5f7463d8e1ac672b3d3cd4bb248c8b4c4
[INFO] checking ahouts/rwc against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahouts%2Frwc" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ahouts/rwc on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ahouts/rwc
[INFO] finished tweaking git repo https://github.com/ahouts/rwc
[INFO] tweaked toml for git repo https://github.com/ahouts/rwc written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/ahouts/rwc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7db76eb97ce123cabea0475b2a95223983cc8b35bb61710686f75038e945cdfa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7db76eb97ce123cabea0475b2a95223983cc8b35bb61710686f75038e945cdfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7db76eb97ce123cabea0475b2a95223983cc8b35bb61710686f75038e945cdfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7db76eb97ce123cabea0475b2a95223983cc8b35bb61710686f75038e945cdfa", kill_on_drop: false }`
[INFO] [stdout] 7db76eb97ce123cabea0475b2a95223983cc8b35bb61710686f75038e945cdfa
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1b5cc6605d5d7eebe5e878b8cdfffbee4b900b54fbb1e168c9757e7aa0e7f72
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c1b5cc6605d5d7eebe5e878b8cdfffbee4b900b54fbb1e168c9757e7aa0e7f72", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking utf-8 v0.7.4
[INFO] [stderr]     Checking arrayvec v0.4.8
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]     Checking rwc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/counts.rs:25:42
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn display<'a>(&self, w: &'a mut Write, filename: &str, opt: &Options) -> io::Result<()> {
[INFO] [stdout]    |                                          ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:12:53
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn get_buff_reader<'a>(&'a mut self) -> Box<BufRead + 'a> {
[INFO] [stdout]    |                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn BufRead + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/counts.rs:25:42
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn display<'a>(&self, w: &'a mut Write, filename: &str, opt: &Options) -> io::Result<()> {
[INFO] [stdout]    |                                          ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader.rs:12:53
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn get_buff_reader<'a>(&'a mut self) -> Box<BufRead + 'a> {
[INFO] [stdout]    |                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn BufRead + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.02s
[INFO] running `Command { std: "docker" "inspect" "c1b5cc6605d5d7eebe5e878b8cdfffbee4b900b54fbb1e168c9757e7aa0e7f72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1b5cc6605d5d7eebe5e878b8cdfffbee4b900b54fbb1e168c9757e7aa0e7f72", kill_on_drop: false }`
[INFO] [stdout] c1b5cc6605d5d7eebe5e878b8cdfffbee4b900b54fbb1e168c9757e7aa0e7f72