[INFO] crate libchao 0.1.0 is already in cache
[INFO] extracting crate libchao 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/libchao/0.1.0
[INFO] extracting crate libchao 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/libchao/0.1.0
[INFO] validating manifest of libchao-0.1.0 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 libchao-0.1.0 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 libchao-0.1.0
[INFO] finished frobbing libchao-0.1.0
[INFO] frobbed toml for libchao-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/libchao/0.1.0/Cargo.toml
[INFO] started frobbing libchao-0.1.0
[INFO] finished frobbing libchao-0.1.0
[INFO] frobbed toml for libchao-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/libchao/0.1.0/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 libchao-0.1.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/libchao/0.1.0:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 14a261b50e5c330c8a44c4e26f5cff3e4a12737a374c3bae92a3b37a718f2be1
[INFO] running `"docker" "start" "-a" "14a261b50e5c330c8a44c4e26f5cff3e4a12737a374c3bae92a3b37a718f2be1"`
[INFO] [stderr]    Compiling libchao v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]    --> src/env.rs:118:20
[INFO] [stderr]     |
[INFO] [stderr] 118 |             [expr, rest..] => match self.eval(expr) {
[INFO] [stderr]     |                    ^^^^^^ help: try using the maximum value for the type: `rest..MAX`
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]    --> src/env.rs:177:20
[INFO] [stderr]     |
[INFO] [stderr] 177 |             [head, tail..] => tail.iter().fold(head.clone(), |acc, x| acc - x.clone()),
[INFO] [stderr]     |                    ^^^^^^ help: try using the maximum value for the type: `tail..MAX`
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]    --> src/env.rs:197:20
[INFO] [stderr]     |
[INFO] [stderr] 197 |             [head, tail..] => tail.iter().fold(head.clone(), |acc, x| acc / x.clone()),
[INFO] [stderr]     |                    ^^^^^^ help: try using the maximum value for the type: `tail..MAX`
[INFO] [stderr] 
[INFO] [stderr] error: `X..` range patterns are not supported
[INFO] [stderr]    --> src/env.rs:224:20
[INFO] [stderr]     |
[INFO] [stderr] 224 |             [head, tail..] => Bool(tail.iter().all(|ref x| *x == head)),
[INFO] [stderr]     |                    ^^^^^^ help: try using the maximum value for the type: `tail..MAX`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]    --> src/env.rs:118:20
[INFO] [stderr]     |
[INFO] [stderr] 118 |             [expr, rest..] => match self.eval(expr) {
[INFO] [stderr]     |                    ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]    --> src/env.rs:122:33
[INFO] [stderr]     |
[INFO] [stderr] 122 |                     for expr in rest.iter() {
[INFO] [stderr]     |                                 ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `rest` in this scope
[INFO] [stderr]    --> src/env.rs:132:36
[INFO] [stderr]     |
[INFO] [stderr] 132 |                     self.bind_args(rest.to_vec(), arg_names.clone());
[INFO] [stderr]     |                                    ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `tail` in this scope
[INFO] [stderr]    --> src/env.rs:177:20
[INFO] [stderr]     |
[INFO] [stderr] 177 |             [head, tail..] => tail.iter().fold(head.clone(), |acc, x| acc - x.clone()),
[INFO] [stderr]     |                    ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `tail` in this scope
[INFO] [stderr]    --> src/env.rs:177:31
[INFO] [stderr]     |
[INFO] [stderr] 177 |             [head, tail..] => tail.iter().fold(head.clone(), |acc, x| acc - x.clone()),
[INFO] [stderr]     |                               ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `tail` in this scope
[INFO] [stderr]    --> src/env.rs:197:20
[INFO] [stderr]     |
[INFO] [stderr] 197 |             [head, tail..] => tail.iter().fold(head.clone(), |acc, x| acc / x.clone()),
[INFO] [stderr]     |                    ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `tail` in this scope
[INFO] [stderr]    --> src/env.rs:197:31
[INFO] [stderr]     |
[INFO] [stderr] 197 |             [head, tail..] => tail.iter().fold(head.clone(), |acc, x| acc / x.clone()),
[INFO] [stderr]     |                               ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `tail` in this scope
[INFO] [stderr]    --> src/env.rs:224:20
[INFO] [stderr]     |
[INFO] [stderr] 224 |             [head, tail..] => Bool(tail.iter().all(|ref x| *x == head)),
[INFO] [stderr]     |                    ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `tail` in this scope
[INFO] [stderr]    --> src/env.rs:224:36
[INFO] [stderr]     |
[INFO] [stderr] 224 |             [head, tail..] => Bool(tail.iter().all(|ref x| *x == head)),
[INFO] [stderr]     |                                    ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(slice_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]    --> src/env.rs:118:20
[INFO] [stderr]     |
[INFO] [stderr] 118 |             [expr, rest..] => match self.eval(expr) {
[INFO] [stderr]     |                    ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]    --> src/env.rs:177:20
[INFO] [stderr]     |
[INFO] [stderr] 177 |             [head, tail..] => tail.iter().fold(head.clone(), |acc, x| acc - x.clone()),
[INFO] [stderr]     |                    ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]    --> src/env.rs:197:20
[INFO] [stderr]     |
[INFO] [stderr] 197 |             [head, tail..] => tail.iter().fold(head.clone(), |acc, x| acc / x.clone()),
[INFO] [stderr]     |                    ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: exclusive range pattern syntax is experimental
[INFO] [stderr]    --> src/env.rs:224:20
[INFO] [stderr]     |
[INFO] [stderr] 224 |             [head, tail..] => Bool(tail.iter().all(|ref x| *x == head)),
[INFO] [stderr]     |                    ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/37854
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'combine::try': try is a reserved keyword in Rust 2018. Use attempt instead.
[INFO] [stderr]  --> src/parser.rs:4:84
[INFO] [stderr]   |
[INFO] [stderr] 4 | use combine::{parser, satisfy_map, any, between, choice, eof, many, many1, one_of, try, ParseError, Parser, Stream, optional};
[INFO] [stderr]   |                                                                                    ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'combine::try': try is a reserved keyword in Rust 2018. Use attempt instead.
[INFO] [stderr]   --> src/parser.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |     choice((try(binary), try(hex), try(decimal))).skip(spaces()).map(Int)
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'combine::try': try is a reserved keyword in Rust 2018. Use attempt instead.
[INFO] [stderr]   --> src/parser.rs:22:26
[INFO] [stderr]    |
[INFO] [stderr] 22 |     choice((try(binary), try(hex), try(decimal))).skip(spaces()).map(Int)
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'combine::try': try is a reserved keyword in Rust 2018. Use attempt instead.
[INFO] [stderr]   --> src/parser.rs:22:36
[INFO] [stderr]    |
[INFO] [stderr] 22 |     choice((try(binary), try(hex), try(decimal))).skip(spaces()).map(Int)
[INFO] [stderr]    |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'combine::try': try is a reserved keyword in Rust 2018. Use attempt instead.
[INFO] [stderr]   --> src/parser.rs:42:6
[INFO] [stderr]    |
[INFO] [stderr] 42 |     (try(choice((t(), f()))), spaces()).map(|(b, _)| b)
[INFO] [stderr]    |      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'combine::try': try is a reserved keyword in Rust 2018. Use attempt instead.
[INFO] [stderr]   --> src/parser.rs:95:26
[INFO] [stderr]    |
[INFO] [stderr] 95 |         let empty_list = try((c('('), spaces(), c(')'), spaces())).map(|_| Nil);
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 18 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0425, E0554, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0425`.
[INFO] [stderr] error: Could not compile `libchao`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "14a261b50e5c330c8a44c4e26f5cff3e4a12737a374c3bae92a3b37a718f2be1"`
[INFO] running `"docker" "rm" "-f" "14a261b50e5c330c8a44c4e26f5cff3e4a12737a374c3bae92a3b37a718f2be1"`
[INFO] [stdout] 14a261b50e5c330c8a44c4e26f5cff3e4a12737a374c3bae92a3b37a718f2be1