[INFO] crate forever 1.0.0 is already in cache
[INFO] extracting crate forever 1.0.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/forever/1.0.0
[INFO] extracting crate forever 1.0.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/forever/1.0.0
[INFO] validating manifest of forever-1.0.0 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 forever-1.0.0 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 forever-1.0.0
[INFO] finished frobbing forever-1.0.0
[INFO] frobbed toml for forever-1.0.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/forever/1.0.0/Cargo.toml
[INFO] started frobbing forever-1.0.0
[INFO] finished frobbing forever-1.0.0
[INFO] frobbed toml for forever-1.0.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/forever/1.0.0/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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing forever-1.0.0 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/forever/1.0.0:/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] 3ff7184ea635dc7b3c6191e621ced609641887538768fd72638c485ae340be9b
[INFO] running `"docker" "start" "-a" "3ff7184ea635dc7b3c6191e621ced609641887538768fd72638c485ae340be9b"`
[INFO] [stderr]    Compiling forever v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] error: invalid suffix `u` for integer literal
[INFO] [stderr]   --> src/lib.rs:55:26
[INFO] [stderr]    |
[INFO] [stderr] 55 |     let a = Forever::new(7u); let b = a;
[INFO] [stderr]    |                          ^^ invalid suffix `u`
[INFO] [stderr]    |
[INFO] [stderr]    = help: the suffix must be one of the integral types (`u32`, `isize`, etc)
[INFO] [stderr] 
[INFO] [stderr] error: expected one of `)`, `,`, `.`, `?`, or an operator, found `{`
[INFO] [stderr]   --> src/lib.rs:57:18
[INFO] [stderr]    |
[INFO] [stderr] 57 |     spawn(proc() {
[INFO] [stderr]    |                  ^ expected one of `)`, `,`, `.`, `?`, or an operator here
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: non-builtin inner attributes are unstable
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![license = "MIT"]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/54726
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `license` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]  --> src/lib.rs:1:4
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![license = "MIT"]
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr] 
[INFO] [stderr] error[E0405]: cannot find trait `Deref` in this scope
[INFO] [stderr]   --> src/lib.rs:47:22
[INFO] [stderr]    |
[INFO] [stderr] 47 | impl<T: Send + Sync> Deref<T> for Forever<T> {
[INFO] [stderr]    |                      ^^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 7  | use std::ops::Deref;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: box expression syntax is experimental; you can call `Box::new` instead
[INFO] [stderr]   --> src/lib.rs:25:45
[INFO] [stderr]    |
[INFO] [stderr] 25 |             __data: unsafe { mem::transmute(box val) },
[INFO] [stderr]    |                                             ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/49733
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0405, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0405`.
[INFO] [stderr] error: Could not compile `forever`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3ff7184ea635dc7b3c6191e621ced609641887538768fd72638c485ae340be9b"`
[INFO] running `"docker" "rm" "-f" "3ff7184ea635dc7b3c6191e621ced609641887538768fd72638c485ae340be9b"`
[INFO] [stdout] 3ff7184ea635dc7b3c6191e621ced609641887538768fd72638c485ae340be9b