[INFO] fetching crate findshlibs 0.8.0...
[INFO] checking findshlibs-0.8.0 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate findshlibs 0.8.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate findshlibs 0.8.0 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate findshlibs 0.8.0
[INFO] finished tweaking crates.io crate findshlibs 0.8.0
[INFO] tweaked toml for crates.io crate findshlibs 0.8.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate findshlibs 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3840a55c37f8338157c38d78cd60e10aa1df4e5adb5104edcd0e01978285dadd
[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" "3840a55c37f8338157c38d78cd60e10aa1df4e5adb5104edcd0e01978285dadd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3840a55c37f8338157c38d78cd60e10aa1df4e5adb5104edcd0e01978285dadd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3840a55c37f8338157c38d78cd60e10aa1df4e5adb5104edcd0e01978285dadd", kill_on_drop: false }`
[INFO] [stdout] 3840a55c37f8338157c38d78cd60e10aa1df4e5adb5104edcd0e01978285dadd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 640cec922ebe8379947570bd2b9b658b003287d2aea167f574d41d11bb474d77
[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" "640cec922ebe8379947570bd2b9b658b003287d2aea167f574d41d11bb474d77", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]     Checking findshlibs v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `IterationControl: From<!>` is not satisfied
[INFO] [stdout]    --> src/lib.rs:397:13
[INFO] [stdout]     |
[INFO] [stdout] 366 | /     fn each<F, C>(f: F)
[INFO] [stdout] 367 | |     where
[INFO] [stdout] 368 | |         F: FnMut(&Self) -> C,
[INFO] [stdout] 369 | |         C: Into<IterationControl>;
[INFO] [stdout]     | |__________________________________- required by `SharedLibrary::each`
[INFO] [stdout] ...
[INFO] [stdout] 397 |               TargetSharedLibrary::each(|_| panic!("uh oh"));
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `From<!>` is not implemented for `IterationControl`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the following implementations were found:
[INFO] [stdout]               <IterationControl as From<()>>
[INFO] [stdout]     = note: required because of the requirements on the impl of `Into<IterationControl>` for `!`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `findshlibs`
[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" "640cec922ebe8379947570bd2b9b658b003287d2aea167f574d41d11bb474d77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "640cec922ebe8379947570bd2b9b658b003287d2aea167f574d41d11bb474d77", kill_on_drop: false }`
[INFO] [stdout] 640cec922ebe8379947570bd2b9b658b003287d2aea167f574d41d11bb474d77