[INFO] fetching crate wybr 0.0.2...
[INFO] checking wybr-0.0.2 against try#ff044a3d65d25a17c3e14c1530004e1540179ba7 for pr-78338
[INFO] extracting crate wybr 0.0.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate wybr 0.0.2 on toolchain ff044a3d65d25a17c3e14c1530004e1540179ba7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wybr 0.0.2
[INFO] finished tweaking crates.io crate wybr 0.0.2
[INFO] tweaked toml for crates.io crate wybr 0.0.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c9f01575b0d07316bdef63f981474d3d84c3e8e2d9253ce9d8c687b8838ffdb
[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" "6c9f01575b0d07316bdef63f981474d3d84c3e8e2d9253ce9d8c687b8838ffdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c9f01575b0d07316bdef63f981474d3d84c3e8e2d9253ce9d8c687b8838ffdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c9f01575b0d07316bdef63f981474d3d84c3e8e2d9253ce9d8c687b8838ffdb", kill_on_drop: false }`
[INFO] [stdout] 6c9f01575b0d07316bdef63f981474d3d84c3e8e2d9253ce9d8c687b8838ffdb
[INFO] running `Command { std: "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" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ff044a3d65d25a17c3e14c1530004e1540179ba7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d7f704a7314a4ac362ba9729e5df9fe0a0eb51e20df0ac3d7369be8cc53bb8c
[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" "5d7f704a7314a4ac362ba9729e5df9fe0a0eb51e20df0ac3d7369be8cc53bb8c", kill_on_drop: false }`
[INFO] [stderr]     Checking wybr v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/blt_reader.rs:15:21
[INFO] [stdout]    |
[INFO] [stdout] 15 |     stream: &'a mut 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/blt_reader.rs:19:29
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn new(stream: &mut BufRead) -> BltReader {
[INFO] [stdout]    |                             ^^^^^^^ help: use `dyn`: `dyn BufRead`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/blt_reader.rs:15:21
[INFO] [stdout]    |
[INFO] [stdout] 15 |     stream: &'a mut 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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/io/blt_reader.rs:19:29
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn new(stream: &mut BufRead) -> BltReader {
[INFO] [stdout]    |                             ^^^^^^^ help: use `dyn`: `dyn BufRead`
[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 1.87s
[INFO] running `Command { std: "docker" "inspect" "5d7f704a7314a4ac362ba9729e5df9fe0a0eb51e20df0ac3d7369be8cc53bb8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d7f704a7314a4ac362ba9729e5df9fe0a0eb51e20df0ac3d7369be8cc53bb8c", kill_on_drop: false }`
[INFO] [stdout] 5d7f704a7314a4ac362ba9729e5df9fe0a0eb51e20df0ac3d7369be8cc53bb8c