[INFO] crate saltpig 0.0.0 is already in cache
[INFO] extracting crate saltpig 0.0.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/saltpig/0.0.0
[INFO] extracting crate saltpig 0.0.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/saltpig/0.0.0
[INFO] validating manifest of saltpig-0.0.0 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 saltpig-0.0.0 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 saltpig-0.0.0
[INFO] finished frobbing saltpig-0.0.0
[INFO] frobbed toml for saltpig-0.0.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/saltpig/0.0.0/Cargo.toml
[INFO] started frobbing saltpig-0.0.0
[INFO] finished frobbing saltpig-0.0.0
[INFO] frobbed toml for saltpig-0.0.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/saltpig/0.0.0/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing saltpig-0.0.0 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/saltpig/0.0.0:/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] dc86cad6379a8ac37004fe09effc2ede35989dad9291010786539f78ce13442b
[INFO] running `"docker" "start" "-a" "dc86cad6379a8ac37004fe09effc2ede35989dad9291010786539f78ce13442b"`
[INFO] [stderr]    Compiling half v1.3.0
[INFO] [stderr]    Compiling saltpig v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:54:1
[INFO] [stderr]    |
[INFO] [stderr] 54 | #![feature(try_from)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/lib.rs:60:1
[INFO] [stderr]    |
[INFO] [stderr] 60 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:103:32
[INFO] [stderr]     |
[INFO] [stderr] 103 |     fn cause(&self) -> Option<&::std::error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/de.rs:59:18
[INFO] [stderr]    |
[INFO] [stderr] 59 |             n @ 0...23 => Prefix::from((major, n.into())),
[INFO] [stderr]    |                  ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(ellipsis_inclusive_range_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/de.rs:64:19
[INFO] [stderr]    |
[INFO] [stderr] 64 |             n @ 28...30 => return Err(Error::UnknownInfo(n, major)),
[INFO] [stderr]    |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/de.rs:72:15
[INFO] [stderr]    |
[INFO] [stderr] 72 |             32...255 => unreachable!(),
[INFO] [stderr]    |               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/de.rs:222:22
[INFO] [stderr]     |
[INFO] [stderr] 222 |                 n @ 0...23 => Value::from_simple_value(n),
[INFO] [stderr]     |                      ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/de.rs:236:23
[INFO] [stderr]     |
[INFO] [stderr] 236 |                 n @ 28...30 => return Err(Error::UnknownInfo(n, Major::Simple)),
[INFO] [stderr]     |                       ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/de.rs:238:19
[INFO] [stderr]     |
[INFO] [stderr] 238 |                 32...255 => unreachable!(),
[INFO] [stderr]     |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'half::f16::as_bits': renamed to to_bits
[INFO] [stderr]    --> src/value/mod.rs:242:27
[INFO] [stderr]     |
[INFO] [stderr] 242 |                         x.as_bits(),
[INFO] [stderr]     |                           ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `saltpig`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "dc86cad6379a8ac37004fe09effc2ede35989dad9291010786539f78ce13442b"`
[INFO] running `"docker" "rm" "-f" "dc86cad6379a8ac37004fe09effc2ede35989dad9291010786539f78ce13442b"`
[INFO] [stdout] dc86cad6379a8ac37004fe09effc2ede35989dad9291010786539f78ce13442b