[INFO] fetching crate parse-hosts 0.5.0...
[INFO] testing parse-hosts-0.5.0 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate parse-hosts 0.5.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate parse-hosts 0.5.0 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate parse-hosts 0.5.0
[INFO] finished tweaking crates.io crate parse-hosts 0.5.0
[INFO] tweaked toml for crates.io crate parse-hosts 0.5.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04a99f781180574668f33b4cb678e1f431091046d94db6aa5c93ad430d1af839
[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" "04a99f781180574668f33b4cb678e1f431091046d94db6aa5c93ad430d1af839", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04a99f781180574668f33b4cb678e1f431091046d94db6aa5c93ad430d1af839", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04a99f781180574668f33b4cb678e1f431091046d94db6aa5c93ad430d1af839", kill_on_drop: false }`
[INFO] [stdout] 04a99f781180574668f33b4cb678e1f431091046d94db6aa5c93ad430d1af839
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a20bce67d94a07cd6bb00627b2d3a9178a227619bcdfd4b34aeef85b02024f58
[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" "a20bce67d94a07cd6bb00627b2d3a9178a227619bcdfd4b34aeef85b02024f58", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling extra-default v0.2.0
[INFO] [stderr]    Compiling len-trait v0.6.1
[INFO] [stderr]    Compiling bow v1.0.3
[INFO] [stdout] error[E0119]: conflicting implementations of trait `std::convert::Into<std::boxed::Box<_>>` for type `Bow<'_, _>`:
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bow-1.0.3/src/lib.rs:124:1
[INFO] [stdout]     |
[INFO] [stdout] 124 | impl<'a, T: 'a + ToBox + ?Sized> Into<boxed::Box<T>> for Bow<'a, T> {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: conflicting implementation in crate `core`:
[INFO] [stdout]             - impl<T, U> std::convert::Into<U> for T
[INFO] [stdout]               where U: std::convert::From<T>;
[INFO] [stdout]     = note: downstream crates may implement trait `std::convert::From<Bow<'_, _>>` for type `std::boxed::Box<_>`
[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 E0119`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bow`.
[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" "a20bce67d94a07cd6bb00627b2d3a9178a227619bcdfd4b34aeef85b02024f58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a20bce67d94a07cd6bb00627b2d3a9178a227619bcdfd4b34aeef85b02024f58", kill_on_drop: false }`
[INFO] [stdout] a20bce67d94a07cd6bb00627b2d3a9178a227619bcdfd4b34aeef85b02024f58