[INFO] updating cached repository Songbird0/json_parser
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Songbird0/json_parser
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Songbird0/json_parser" "work/ex/beta-1.38-1/sources/1.37.0/gh/Songbird0/json_parser"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Songbird0/json_parser'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Songbird0/json_parser" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Songbird0/json_parser"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Songbird0/json_parser'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 57805891c3e1d38450840bf8a199ff408adbd851
[INFO] sha for GitHub repo Songbird0/json_parser: 57805891c3e1d38450840bf8a199ff408adbd851
[INFO] validating manifest of Songbird0/json_parser 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 Songbird0/json_parser 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 Songbird0/json_parser
[INFO] finished frobbing Songbird0/json_parser
[INFO] frobbed toml for Songbird0/json_parser written to work/ex/beta-1.38-1/sources/1.37.0/gh/Songbird0/json_parser/Cargo.toml
[INFO] started frobbing Songbird0/json_parser
[INFO] finished frobbing Songbird0/json_parser
[INFO] frobbed toml for Songbird0/json_parser written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Songbird0/json_parser/Cargo.toml
[INFO] crate Songbird0/json_parser 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 Songbird0/json_parser 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-4/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/Songbird0/json_parser:/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] beb0fd9b744478dcbd8935afe38e8b1b9460830aa7dd07e145df9ad6fb84f200
[INFO] running `"docker" "start" "-a" "beb0fd9b744478dcbd8935afe38e8b1b9460830aa7dd07e145df9ad6fb84f200"`
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling json_parser v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `nom::is_alphanumeric`
[INFO] [stderr]  --> src/parsers/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use nom::is_alphanumeric;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `entry_list`
[INFO] [stderr]   --> src/ast/entries.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     entry_list: EntryList<K, V>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `key`
[INFO] [stderr]   --> src/ast/entries.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     key: K,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `value`
[INFO] [stderr]   --> src/ast/entries.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     value: Value<V>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `data`
[INFO] [stderr]  --> src/ast/values.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     data: V
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]  --> src/ast/entries.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub type EntryList<K: Key, V> = Option<Vec<Entry<K, Value<V>>>>;
[INFO] [stderr]   |                       ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stderr]   = help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nom::is_alphanumeric`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use nom::is_alphanumeric;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.94s
[INFO] running `"docker" "inspect" "beb0fd9b744478dcbd8935afe38e8b1b9460830aa7dd07e145df9ad6fb84f200"`
[INFO] running `"docker" "rm" "-f" "beb0fd9b744478dcbd8935afe38e8b1b9460830aa7dd07e145df9ad6fb84f200"`
[INFO] [stdout] beb0fd9b744478dcbd8935afe38e8b1b9460830aa7dd07e145df9ad6fb84f200
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/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/Songbird0/json_parser:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 935b9c8997c11fc950b7984a58694ac651ed52eefcc13ef055427cd062f40437
[INFO] running `"docker" "start" "-a" "935b9c8997c11fc950b7984a58694ac651ed52eefcc13ef055427cd062f40437"`
[INFO] [stderr]    Compiling json_parser v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] note: trace_macro
[INFO] [stderr]   --> tests/dummy_test.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / named!( get_a<&[u8], Vec<&[u8]>>, dbg!(
[INFO] [stderr] 8  | |   complete!(
[INFO] [stderr] 9  | |     many0!(
[INFO] [stderr] 10 | |       tag!("a")
[INFO] [stderr] 11 | |     )
[INFO] [stderr] 12 | |   )
[INFO] [stderr] 13 | | ));
[INFO] [stderr]    | |___^
[INFO] [stderr]    |
[INFO] [stderr]    = note: expanding `named! { get_a < & [u8] , Vec < & [u8] >> , dbg ! (complete ! (many0 ! (tag ! ("a")))) }`
[INFO] [stderr]    = note: to `fn get_a (i : &[u8]) -> $crate :: IResult < &[u8] , Vec<&[u8]> , u32 >
[INFO] [stderr]            { dbg ! (i , complete ! (many0 ! (tag ! ("a")))) }`
[INFO] [stderr]    = note: expanding `dbg! { i , complete ! (many0 ! (tag ! ("a"))) }`
[INFO] [stderr]    = note: to `{
[INFO] [stderr]                use $crate :: lib :: std :: result :: Result :: * ; let l = nom_line ! ()
[INFO] [stderr]                ; match complete ! (i , many0 ! (tag ! ("a")))
[INFO] [stderr]                {
[INFO] [stderr]                    Err (e) =>
[INFO] [stderr]                    {
[INFO] [stderr]                        nom_println !
[INFO] [stderr]                        ("Err({:?}) at l.{} by ' {} '" , e , l , nom_stringify !
[INFO] [stderr]                         (complete ! (many0 ! (tag ! ("a"))))) ; Err (e)
[INFO] [stderr]                    } , a => a ,
[INFO] [stderr]                }
[INFO] [stderr]            }`
[INFO] [stderr]    = note: expanding `nom_line! {  }`
[INFO] [stderr]    = note: to `line ! ()`
[INFO] [stderr]    = note: expanding `complete! { i , many0 ! (tag ! ("a")) }`
[INFO] [stderr]    = note: to `{
[INFO] [stderr]                use $crate :: lib :: std :: result :: Result :: * ; use $crate ::
[INFO] [stderr]                { Err , ErrorKind } ; let i_ = i . clone () ; match many0 !
[INFO] [stderr]                (i_ , tag ! ("a"))
[INFO] [stderr]                {
[INFO] [stderr]                    Err (Err :: Incomplete (_)) =>
[INFO] [stderr]                    {
[INFO] [stderr]                        Err
[INFO] [stderr]                        (Err :: Error
[INFO] [stderr]                         (error_position ! (i , ErrorKind :: Complete :: < u32 >)))
[INFO] [stderr]                    } , rest => rest
[INFO] [stderr]                }
[INFO] [stderr]            }`
[INFO] [stderr]    = note: expanding `many0! { i_ , tag ! ("a") }`
[INFO] [stderr]    = note: to `{
[INFO] [stderr]                use $crate :: lib :: std :: result :: Result :: * ; use $crate ::
[INFO] [stderr]                { Err , AtEof } ; let ret ; let mut res = $crate :: lib :: std :: vec ::
[INFO] [stderr]                Vec :: new () ; let mut input = i_ . clone () ; loop
[INFO] [stderr]                {
[INFO] [stderr]                    let input_ = input . clone () ; match tag ! (input_ , "a")
[INFO] [stderr]                    {
[INFO] [stderr]                        Ok ((i , o)) =>
[INFO] [stderr]                        {
[INFO] [stderr]                            if i == input
[INFO] [stderr]                            {
[INFO] [stderr]                                if i . at_eof () { ret = Ok ((input , res)) ; } else
[INFO] [stderr]                                {
[INFO] [stderr]                                    ret = Err
[INFO] [stderr]                                    (Err :: Error
[INFO] [stderr]                                     (error_position !
[INFO] [stderr]                                      (input , $crate :: ErrorKind :: Many0))) ;
[INFO] [stderr]                                } break ;
[INFO] [stderr]                            } res . push (o) ; input = i ;
[INFO] [stderr]                        } , Err (Err :: Error (_)) =>
[INFO] [stderr]                        { ret = Ok ((input , res)) ; break ; } , Err (e) =>
[INFO] [stderr]                        { ret = Err (e) ; break ; } ,
[INFO] [stderr]                    }
[INFO] [stderr]                } ret
[INFO] [stderr]            }`
[INFO] [stderr]    = note: expanding `tag! { input_ , "a" }`
[INFO] [stderr]    = note: to `{
[INFO] [stderr]                use $crate :: lib :: std :: result :: Result :: * ; use $crate ::
[INFO] [stderr]                { Err , Needed , IResult , ErrorKind } ; use $crate ::
[INFO] [stderr]                { Compare , CompareResult , InputLength , need_more , InputTake } ; let
[INFO] [stderr]                res : IResult < _ , _ > = match (input_) . compare ("a")
[INFO] [stderr]                {
[INFO] [stderr]                    CompareResult :: Ok =>
[INFO] [stderr]                    { let blen = "a" . input_len () ; Ok (input_ . take_split (blen)) } ,
[INFO] [stderr]                    CompareResult :: Incomplete =>
[INFO] [stderr]                    { need_more (input_ , Needed :: Size ("a" . input_len ())) } ,
[INFO] [stderr]                    CompareResult :: Error =>
[INFO] [stderr]                    {
[INFO] [stderr]                        let e : ErrorKind < u32 > = ErrorKind :: Tag ; Err
[INFO] [stderr]                        (Err :: Error ($crate :: Context :: Code (input_ , e)))
[INFO] [stderr]                    }
[INFO] [stderr]                } ; res
[INFO] [stderr]            }`
[INFO] [stderr]    = note: expanding `error_position! { input , $crate :: ErrorKind :: Many0 }`
[INFO] [stderr]    = note: to `{ $crate :: Context :: Code (input , ::nom::ErrorKind::Many0) }`
[INFO] [stderr]    = note: expanding `error_position! { i , ErrorKind :: Complete :: < u32 > }`
[INFO] [stderr]    = note: to `{ $crate :: Context :: Code (i , ErrorKind::Complete::<u32>) }`
[INFO] [stderr]    = note: expanding `nom_println! { "Err({:?}) at l.{} by ' {} '" , e , l , nom_stringify !
[INFO] [stderr]            (complete ! (many0 ! (tag ! ("a")))) }`
[INFO] [stderr]    = note: to `println !
[INFO] [stderr]            ("Err({:?}) at l.{} by ' {} '" , e , l , nom_stringify !
[INFO] [stderr]             (complete ! (many0 ! (tag ! ("a")))))`
[INFO] [stderr]    = note: expanding `println! { "Err({:?}) at l.{} by ' {} '" , e , l , nom_stringify !
[INFO] [stderr]            (complete ! (many0 ! (tag ! ("a")))) }`
[INFO] [stderr]    = note: to `{
[INFO] [stderr]                $crate :: io :: _print
[INFO] [stderr]                (format_args_nl !
[INFO] [stderr]                 ("Err({:?}) at l.{} by ' {} '" , e , l , nom_stringify !
[INFO] [stderr]                  (complete ! (many0 ! (tag ! ("a")))))) ;
[INFO] [stderr]            }`
[INFO] [stderr]    = note: expanding `nom_stringify! { complete ! (many0 ! (tag ! ("a"))) }`
[INFO] [stderr]    = note: to `stringify ! (complete ! (many0 ! (tag ! ("a"))))`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> tests/dummy_test.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(trace_macros)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nom::is_alphanumeric`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use nom::is_alphanumeric;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> tests/empty_object_test.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nom::Err`
[INFO] [stderr]  --> tests/empty_object_test.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use nom::Err;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nom::verbose_errors::Context`
[INFO] [stderr]  --> tests/empty_object_test.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use nom::verbose_errors::Context;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nom::ErrorKind`
[INFO] [stderr]  --> tests/empty_object_test.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use nom::ErrorKind;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[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 `json_parser`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused import: `nom::is_alphanumeric`
[INFO] [stderr]  --> src/parsers/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use nom::is_alphanumeric;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `entry_list`
[INFO] [stderr]   --> src/ast/entries.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     entry_list: EntryList<K, V>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `key`
[INFO] [stderr]   --> src/ast/entries.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     key: K,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `value`
[INFO] [stderr]   --> src/ast/entries.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     value: Value<V>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `data`
[INFO] [stderr]  --> src/ast/values.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     data: V
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: bounds on generic parameters are not enforced in type aliases
[INFO] [stderr]  --> src/ast/entries.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub type EntryList<K: Key, V> = Option<Vec<Entry<K, Value<V>>>>;
[INFO] [stderr]   |                       ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stderr]   = help: the bound will not be checked when the type alias is used, and should be removed
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "935b9c8997c11fc950b7984a58694ac651ed52eefcc13ef055427cd062f40437"`
[INFO] running `"docker" "rm" "-f" "935b9c8997c11fc950b7984a58694ac651ed52eefcc13ef055427cd062f40437"`
[INFO] [stdout] 935b9c8997c11fc950b7984a58694ac651ed52eefcc13ef055427cd062f40437