[INFO] fetching crate yoke-derive 0.0.1...
[INFO] checking yoke-derive-0.0.1 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate yoke-derive 0.0.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate yoke-derive 0.0.1 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yoke-derive 0.0.1
[INFO] finished tweaking crates.io crate yoke-derive 0.0.1
[INFO] tweaked toml for crates.io crate yoke-derive 0.0.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate yoke-derive 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cef069f7e536d8468bfd7e0f6061951ef0137cf75ab4443c3407af345f073628
[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" "cef069f7e536d8468bfd7e0f6061951ef0137cf75ab4443c3407af345f073628", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cef069f7e536d8468bfd7e0f6061951ef0137cf75ab4443c3407af345f073628", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cef069f7e536d8468bfd7e0f6061951ef0137cf75ab4443c3407af345f073628", kill_on_drop: false }`
[INFO] [stdout] cef069f7e536d8468bfd7e0f6061951ef0137cf75ab4443c3407af345f073628
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 93b122c5d63bdf0da673c0c36b25996415ada23c43cb155a8fb6bd1dbd9d28a5
[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" "93b122c5d63bdf0da673c0c36b25996415ada23c43cb155a8fb6bd1dbd9d28a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking syn v1.0.73
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]     Checking yoke v0.2.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking synstructure v0.12.4
[INFO] [stderr]     Checking yoke-derive v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `u8: ZeroCopyFrom<_>` is not satisfied
[INFO] [stdout]   --> examples/derive.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[derive(Yokeable, ZeroCopyFrom)]
[INFO] [stdout]    |                    ^^^^^^^^^^^^ the trait `ZeroCopyFrom<_>` is not implemented for `u8`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required by `zero_copy_from`
[INFO] [stdout]    = note: this error originates in the derive macro `ZeroCopyFrom` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `&'static str: ZeroCopyFrom<&str>` is not satisfied
[INFO] [stdout]   --> examples/derive.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[derive(Yokeable, ZeroCopyFrom)]
[INFO] [stdout]    |                    ^^^^^^^^^^^^ the trait `ZeroCopyFrom<&str>` is not implemented for `&'static str`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the following implementations were found:
[INFO] [stdout]              <&'static str as ZeroCopyFrom<String>>
[INFO] [stdout]              <&'static str as ZeroCopyFrom<str>>
[INFO] [stdout]    = note: required by `zero_copy_from`
[INFO] [stdout]    = note: this error originates in the derive macro `ZeroCopyFrom` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Cow<'static, str>: ZeroCopyFrom<Cow<'_, str>>` is not satisfied
[INFO] [stdout]   --> examples/derive.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[derive(Yokeable, ZeroCopyFrom)]
[INFO] [stdout]    |                    ^^^^^^^^^^^^ the trait `ZeroCopyFrom<Cow<'_, str>>` is not implemented for `Cow<'static, str>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the following implementations were found:
[INFO] [stdout]              <Cow<'static, str> as ZeroCopyFrom<String>>
[INFO] [stdout]              <Cow<'static, str> as ZeroCopyFrom<str>>
[INFO] [stdout]    = note: required by `zero_copy_from`
[INFO] [stdout]    = note: this error originates in the derive macro `ZeroCopyFrom` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Cow<'static, [u8]>: ZeroCopyFrom<_>` is not satisfied
[INFO] [stdout]   --> examples/derive.rs:13:20
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[derive(Yokeable, ZeroCopyFrom)]
[INFO] [stdout]    |                    ^^^^^^^^^^^^ the trait `ZeroCopyFrom<_>` is not implemented for `Cow<'static, [u8]>`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the following implementations were found:
[INFO] [stdout]              <Cow<'static, str> as ZeroCopyFrom<String>>
[INFO] [stdout]              <Cow<'static, str> as ZeroCopyFrom<str>>
[INFO] [stdout]    = note: required by `zero_copy_from`
[INFO] [stdout]    = note: this error originates in the derive macro `ZeroCopyFrom` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `yoke-derive`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "93b122c5d63bdf0da673c0c36b25996415ada23c43cb155a8fb6bd1dbd9d28a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93b122c5d63bdf0da673c0c36b25996415ada23c43cb155a8fb6bd1dbd9d28a5", kill_on_drop: false }`
[INFO] [stdout] 93b122c5d63bdf0da673c0c36b25996415ada23c43cb155a8fb6bd1dbd9d28a5