[INFO] crate quack 0.0.13 is already in cache
[INFO] extracting crate quack 0.0.13 into work/ex/beta-1.38-1/sources/1.37.0/reg/quack/0.0.13
[INFO] extracting crate quack 0.0.13 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/quack/0.0.13
[INFO] validating manifest of quack-0.0.13 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of quack-0.0.13 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing quack-0.0.13
[INFO] finished frobbing quack-0.0.13
[INFO] frobbed toml for quack-0.0.13 written to work/ex/beta-1.38-1/sources/1.37.0/reg/quack/0.0.13/Cargo.toml
[INFO] started frobbing quack-0.0.13
[INFO] finished frobbing quack-0.0.13
[INFO] frobbed toml for quack-0.0.13 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/quack/0.0.13/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing quack-0.0.13 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/quack/0.0.13:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] fb2b8e541e8036bcc07bc8bf7c3d14bb3f50fd0eeab5c0d780fb1bbfd2cec755
[INFO] running `"docker" "start" "-a" "fb2b8e541e8036bcc07bc8bf7c3d14bb3f50fd0eeab5c0d780fb1bbfd2cec755"`
[INFO] [stderr]    Compiling quack v0.0.13 (/opt/crater/workdir)
[INFO] [stderr] error[E0405]: cannot find trait `PhantomFn` in module `std::marker`
[INFO] [stderr]   --> src/lib.rs:59:30
[INFO] [stderr]    |
[INFO] [stderr] 59 | pub trait Pair: std::marker::PhantomFn<Self> {
[INFO] [stderr]    |                              ^^^^^^^^^ not found in `std::marker`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `unstable` attribute input
[INFO] [stderr]  --> src/get.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[unstable]
[INFO] [stderr]   | ^^^^^^^^^^^ help: must be of the form: `#[unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `unstable` attribute input
[INFO] [stderr]  --> src/set.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[unstable]
[INFO] [stderr]   | ^^^^^^^^^^^ help: must be of the form: `#[unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `unstable` attribute input
[INFO] [stderr]  --> src/action.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[unstable]
[INFO] [stderr]   | ^^^^^^^^^^^ help: must be of the form: `#[unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `unstable` attribute input
[INFO] [stderr]   --> src/lib.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | #[unstable]
[INFO] [stderr]    | ^^^^^^^^^^^ help: must be of the form: `#[unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `unstable` attribute input
[INFO] [stderr]   --> src/lib.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | #[unstable]
[INFO] [stderr]    | ^^^^^^^^^^^ help: must be of the form: `#[unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `unstable` attribute input
[INFO] [stderr]   --> src/lib.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | #[unstable]
[INFO] [stderr]    | ^^^^^^^^^^^ help: must be of the form: `#[unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `unstable` attribute input
[INFO] [stderr]   --> src/lib.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | #[unstable]
[INFO] [stderr]    | ^^^^^^^^^^^ help: must be of the form: `#[unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `unstable` attribute input
[INFO] [stderr]   --> src/lib.rs:58:1
[INFO] [stderr]    |
[INFO] [stderr] 58 | #[unstable]
[INFO] [stderr]    | ^^^^^^^^^^^ help: must be of the form: `#[unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stderr] 
[INFO] [stderr] error: malformed `unstable` attribute input
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![unstable]
[INFO] [stderr]   | ^^^^^^^^^^^^ help: must be of the form: `#[unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stderr] 
[INFO] [stderr] warning: patterns aren't allowed in methods without bodies
[INFO] [stderr]  --> src/set.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 |     fn set(mut self, val: T) -> Self;
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(patterns_in_fns_without_body)] on by default
[INFO] [stderr]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]   = note: for more information, see issue #35203 <https://github.com/rust-lang/rust/issues/35203>
[INFO] [stderr] 
[INFO] [stderr] error: stability attributes may not be used outside of the standard library
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![unstable]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: stability attributes may not be used outside of the standard library
[INFO] [stderr]  --> src/get.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[unstable]
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: stability attributes may not be used outside of the standard library
[INFO] [stderr]  --> src/set.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[unstable]
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: stability attributes may not be used outside of the standard library
[INFO] [stderr]  --> src/action.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[unstable]
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/lib.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | #[unstable]
[INFO] [stderr]    | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/lib.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | #[unstable]
[INFO] [stderr]    | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/lib.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | #[unstable]
[INFO] [stderr]    | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/lib.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | #[unstable]
[INFO] [stderr]    | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: stability attributes may not be used outside of the standard library
[INFO] [stderr]   --> src/lib.rs:58:1
[INFO] [stderr]    |
[INFO] [stderr] 58 | #[unstable]
[INFO] [stderr]    | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 19 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0405`.
[INFO] [stderr] error: Could not compile `quack`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "fb2b8e541e8036bcc07bc8bf7c3d14bb3f50fd0eeab5c0d780fb1bbfd2cec755"`
[INFO] running `"docker" "rm" "-f" "fb2b8e541e8036bcc07bc8bf7c3d14bb3f50fd0eeab5c0d780fb1bbfd2cec755"`
[INFO] [stdout] fb2b8e541e8036bcc07bc8bf7c3d14bb3f50fd0eeab5c0d780fb1bbfd2cec755