[INFO] updating cached repository bumzack/rust-parser-combinator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bumzack/rust-parser-combinator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bumzack/rust-parser-combinator" "work/ex/beta-1.38-1/sources/1.37.0/gh/bumzack/rust-parser-combinator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/bumzack/rust-parser-combinator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bumzack/rust-parser-combinator" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bumzack/rust-parser-combinator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bumzack/rust-parser-combinator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7ee91079fdf48b75bcac032ce9dc09fd2fac24ea
[INFO] sha for GitHub repo bumzack/rust-parser-combinator: 7ee91079fdf48b75bcac032ce9dc09fd2fac24ea
[INFO] validating manifest of bumzack/rust-parser-combinator 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 bumzack/rust-parser-combinator 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 bumzack/rust-parser-combinator
[INFO] finished frobbing bumzack/rust-parser-combinator
[INFO] frobbed toml for bumzack/rust-parser-combinator written to work/ex/beta-1.38-1/sources/1.37.0/gh/bumzack/rust-parser-combinator/Cargo.toml
[INFO] started frobbing bumzack/rust-parser-combinator
[INFO] finished frobbing bumzack/rust-parser-combinator
[INFO] frobbed toml for bumzack/rust-parser-combinator written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bumzack/rust-parser-combinator/Cargo.toml
[INFO] crate bumzack/rust-parser-combinator already has a lockfile, it will not be regenerated
[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 bumzack/rust-parser-combinator 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-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bumzack/rust-parser-combinator:/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] f4aa519c895f8a21fe7ebda252e95943c3c00ee2f7a7190988be12380da37bf9
[INFO] running `"docker" "start" "-a" "f4aa519c895f8a21fe7ebda252e95943c3c00ee2f7a7190988be12380da37bf9"`
[INFO] [stderr]    Compiling parser_combinator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::process::Output`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::process::Output;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0618]: expected function, found `impl Parser<'_, ((), std::string::String)>`
[INFO] [stderr]    --> src/main.rs:169:16
[INFO] [stderr]     |
[INFO] [stderr] 167 |     let tag_opener = pair(match_literal("<"), identifier);
[INFO] [stderr]     |         ---------- `impl Parser<'_, ((), std::string::String)>` defined here
[INFO] [stderr] 168 |     assert_eq!(Ok(("/>", ((), "my-first-element".to_string()))),
[INFO] [stderr] 169 |                tag_opener("<my-first-element/>"));
[INFO] [stderr]     |                ^^^^^^^^^^-----------------------
[INFO] [stderr]     |                |
[INFO] [stderr]     |                call expression requires function
[INFO] [stderr] 
[INFO] [stderr] error[E0618]: expected function, found `impl Parser<'_, ((), std::string::String)>`
[INFO] [stderr]    --> src/main.rs:171:29
[INFO] [stderr]     |
[INFO] [stderr] 167 |     let tag_opener = pair(match_literal("<"), identifier);
[INFO] [stderr]     |         ---------- `impl Parser<'_, ((), std::string::String)>` defined here
[INFO] [stderr] ...
[INFO] [stderr] 171 |     assert_eq!(Err("oops"), tag_opener("oops"));
[INFO] [stderr]     |                             ^^^^^^^^^^--------
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             call expression requires function
[INFO] [stderr] 
[INFO] [stderr] error[E0618]: expected function, found `impl Parser<'_, ((), std::string::String)>`
[INFO] [stderr]    --> src/main.rs:172:30
[INFO] [stderr]     |
[INFO] [stderr] 167 |     let tag_opener = pair(match_literal("<"), identifier);
[INFO] [stderr]     |         ---------- `impl Parser<'_, ((), std::string::String)>` defined here
[INFO] [stderr] ...
[INFO] [stderr] 172 |     assert_eq!(Err("!oops"), tag_opener("<!oops"));
[INFO] [stderr]     |                              ^^^^^^^^^^----------
[INFO] [stderr]     |                              |
[INFO] [stderr]     |                              call expression requires function
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0618`.
[INFO] [stderr] error: Could not compile `parser_combinator`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f4aa519c895f8a21fe7ebda252e95943c3c00ee2f7a7190988be12380da37bf9"`
[INFO] running `"docker" "rm" "-f" "f4aa519c895f8a21fe7ebda252e95943c3c00ee2f7a7190988be12380da37bf9"`
[INFO] [stdout] f4aa519c895f8a21fe7ebda252e95943c3c00ee2f7a7190988be12380da37bf9