[INFO] fetching crate rx 0.0.1...
[INFO] checking rx-0.0.1 against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] extracting crate rx 0.0.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rx 0.0.1 on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rx 0.0.1
[INFO] finished tweaking crates.io crate rx 0.0.1
[INFO] tweaked toml for crates.io crate rx 0.0.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e51d9cb78b34ce7526a0c2410584ed854686dd8e503590f2a51a813bcb53adf
[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" "6e51d9cb78b34ce7526a0c2410584ed854686dd8e503590f2a51a813bcb53adf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e51d9cb78b34ce7526a0c2410584ed854686dd8e503590f2a51a813bcb53adf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e51d9cb78b34ce7526a0c2410584ed854686dd8e503590f2a51a813bcb53adf", kill_on_drop: false }`
[INFO] [stdout] 6e51d9cb78b34ce7526a0c2410584ed854686dd8e503590f2a51a813bcb53adf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--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] 1cb992d0da6126e1993b50383753a6d37cb42d051ac4d02917b7afb0f8cf0c98
[INFO] running `Command { std: "docker" "start" "-a" "1cb992d0da6126e1993b50383753a6d37cb42d051ac4d02917b7afb0f8cf0c98", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking rx v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/subject.rs:17:24
[INFO] [stdout]    |
[INFO] [stdout] 17 |     observers: Vec<Box<BoxedObserver<T, E>>>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BoxedObserver<T, E>`
[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/subject.rs:17:24
[INFO] [stdout]    |
[INFO] [stdout] 17 |     observers: Vec<Box<BoxedObserver<T, E>>>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn BoxedObserver<T, E>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "1cb992d0da6126e1993b50383753a6d37cb42d051ac4d02917b7afb0f8cf0c98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cb992d0da6126e1993b50383753a6d37cb42d051ac4d02917b7afb0f8cf0c98", kill_on_drop: false }`
[INFO] [stdout] 1cb992d0da6126e1993b50383753a6d37cb42d051ac4d02917b7afb0f8cf0c98