[INFO] crate nom-peg 0.1.1 is already in cache
[INFO] testing nom-peg-0.1.1 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate nom-peg 0.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate nom-peg 0.1.1 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate nom-peg 0.1.1
[INFO] finished tweaking crates.io crate nom-peg 0.1.1
[INFO] tweaked toml for crates.io crate nom-peg 0.1.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stdout] eedf41306f91dde7e611259abefda1869911ff0faae30ea22192f804da259e64
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "eedf41306f91dde7e611259abefda1869911ff0faae30ea22192f804da259e64"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling nom-peg v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.09s
[INFO] running `"docker" "inspect" "eedf41306f91dde7e611259abefda1869911ff0faae30ea22192f804da259e64"`
[INFO] running `"docker" "rm" "-f" "eedf41306f91dde7e611259abefda1869911ff0faae30ea22192f804da259e64"`
[INFO] [stdout] eedf41306f91dde7e611259abefda1869911ff0faae30ea22192f804da259e64
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dd6f8f53813b86d672fcdfc0645bd710acae132044f960eccf8d6b7d23713856
[INFO] running `"docker" "start" "-a" "dd6f8f53813b86d672fcdfc0645bd710acae132044f960eccf8d6b7d23713856"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling nom-peg v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: suffixes on a tuple index are invalid
[INFO] [stderr]   --> tests/json.rs:25:16
[INFO] [stderr]    |
[INFO] [stderr] 25 |       let json = grammar! {
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 26 | |         parse: JsonValue = <value> "="
[INFO] [stderr] 27 | |
[INFO] [stderr] 28 | |         num: f32 = ::recognize_float => { result.parse::<f32>().unwrap() }
[INFO] [stderr] ...  |
[INFO] [stderr] 51 | |                          | boolean => { JsonValue::Boolean(result) }
[INFO] [stderr] 52 | |     };
[INFO] [stderr]    | |_____^ invalid suffix `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `usize` is *temporarily* accepted on tuple index fields as it was incorrectly accepted on stable for a few releases
[INFO] [stderr]    = help: on proc macros, you'll want to use `syn::Index::from` or `proc_macro::Literal::*_unsuffixed` for code that will desugar to tuple field access
[INFO] [stderr]    = note: see issue #60210 <https://github.com/rust-lang/rust/issues/60210> for more information
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> tests/json.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/json.rs:28:41
[INFO] [stderr]    |
[INFO] [stderr] 28 |         num: f32 = ::recognize_float => { result.parse::<f32>().unwrap() }
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/json.rs:32:36
[INFO] [stderr]    |
[INFO] [stderr] 32 |         boolean: bool = "false" => { false }
[INFO] [stderr]    |                                    ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/json.rs:33:35
[INFO] [stderr]    |
[INFO] [stderr] 33 |                       | "true" => { true }
[INFO] [stderr]    |                                   ^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/json.rs:47:36
[INFO] [stderr]    |
[INFO] [stderr] 47 |         value: JsonValue = hash => { JsonValue::Object(result) }
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/json.rs:48:37
[INFO] [stderr]    |
[INFO] [stderr] 48 |                          | array => { JsonValue::Array(result) }
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/json.rs:49:38
[INFO] [stderr]    |
[INFO] [stderr] 49 |                          | string => { JsonValue::Str(String::from(result)) }
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/json.rs:50:35
[INFO] [stderr]    |
[INFO] [stderr] 50 |                          | num => { JsonValue::Num(result) }
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/json.rs:51:39
[INFO] [stderr]    |
[INFO] [stderr] 51 |                          | boolean => { JsonValue::Boolean(result) }
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: suffixes on a tuple index are invalid
[INFO] [stderr]   --> tests/basic.rs:39:22
[INFO] [stderr]    |
[INFO] [stderr] 39 |       let arithmetic = grammar! {
[INFO] [stderr]    |  ______________________^
[INFO] [stderr] 40 | |         parse: i64 = <expr> "="
[INFO] [stderr] 41 | |
[INFO] [stderr] 42 | |         expr: i64 = <l: product> "+" <r: expr> => { l + r }
[INFO] [stderr] ...  |
[INFO] [stderr] 51 | |                    | "(" <expr> ")"
[INFO] [stderr] 52 | |     };
[INFO] [stderr]    | |_____^ invalid suffix `usize`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `usize` is *temporarily* accepted on tuple index fields as it was incorrectly accepted on stable for a few releases
[INFO] [stderr]    = help: on proc macros, you'll want to use `syn::Index::from` or `proc_macro::Literal::*_unsuffixed` for code that will desugar to tuple field access
[INFO] [stderr]    = note: see issue #60210 <https://github.com/rust-lang/rust/issues/60210> for more information
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> tests/basic.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/basic.rs:42:51
[INFO] [stderr]    |
[INFO] [stderr] 42 |         expr: i64 = <l: product> "+" <r: expr> => { l + r }
[INFO] [stderr]    |                                                   ^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/basic.rs:43:51
[INFO] [stderr]    |
[INFO] [stderr] 43 |                   | <l: product> "+" <r: expr> => { l - r }
[INFO] [stderr]    |                                                   ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/basic.rs:46:55
[INFO] [stderr]    |
[INFO] [stderr] 46 |         product: i64 = <l: value> "*" <r: product> => { l * r }
[INFO] [stderr]    |                                                       ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/basic.rs:47:55
[INFO] [stderr]    |
[INFO] [stderr] 47 |                      | <l: value> "/" <r: product> => { l / r }
[INFO] [stderr]    |                                                       ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/basic.rs:50:68
[INFO] [stderr]    |
[INFO] [stderr] 50 |         value: i64 = ("0"|"1"|"2"|"3"|"4"|"5"|"6"|"7"|"8"|"9")+ => { result.join("").parse::<i64>().unwrap() }
[INFO] [stderr]    |                                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/basic.rs:77:28
[INFO] [stderr]    |
[INFO] [stderr] 77 |         p = &"a"* "a"*  => { "yay" }
[INFO] [stderr]    |                            ^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/basic.rs:78:38
[INFO] [stderr]    |
[INFO] [stderr] 78 |         q: String = a ("b" | "c") => { result.0 }
[INFO] [stderr]    |                                      ^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/basic.rs:79:22
[INFO] [stderr]    |
[INFO] [stderr] 79 |           | a "d" => { result.0 }
[INFO] [stderr]    |                      ^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> tests/basic.rs:81:29
[INFO] [stderr]    |
[INFO] [stderr] 81 |         a: String = "a"* => { result.join("") }
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `nom-peg`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to previous error; 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "dd6f8f53813b86d672fcdfc0645bd710acae132044f960eccf8d6b7d23713856"`
[INFO] running `"docker" "rm" "-f" "dd6f8f53813b86d672fcdfc0645bd710acae132044f960eccf8d6b7d23713856"`
[INFO] [stdout] dd6f8f53813b86d672fcdfc0645bd710acae132044f960eccf8d6b7d23713856