[INFO] crate dynasm 0.3.2 is already in cache
[INFO] extracting crate dynasm 0.3.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/dynasm/0.3.2
[INFO] extracting crate dynasm 0.3.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/dynasm/0.3.2
[INFO] validating manifest of dynasm-0.3.2 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 dynasm-0.3.2 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 dynasm-0.3.2
[INFO] finished frobbing dynasm-0.3.2
[INFO] frobbed toml for dynasm-0.3.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/dynasm/0.3.2/Cargo.toml
[INFO] started frobbing dynasm-0.3.2
[INFO] finished frobbing dynasm-0.3.2
[INFO] frobbed toml for dynasm-0.3.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/dynasm/0.3.2/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing dynasm-0.3.2 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/dynasm/0.3.2:/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] acc9ab6a5ebb782749fdd395f77ad0869897847d7b7e4940796dd6e36a6cb0a9
[INFO] running `"docker" "start" "-a" "acc9ab6a5ebb782749fdd395f77ad0869897847d7b7e4940796dd6e36a6cb0a9"`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling dynasm v0.3.2 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/arch/x64/parser.rs:408:1
[INFO] [stderr]     |
[INFO] [stderr] 408 |   /// why
[INFO] [stderr]     |   ^^^^^^^
[INFO] [stderr] 409 | / lazy_static!{
[INFO] [stderr] 410 | |     static ref X64_REGISTERS: HashMap<&'static str, (RegId, Size)> = {
[INFO] [stderr] 411 | |         use self::RegId::*;
[INFO] [stderr] 412 | |         use serialize::Size::*;
[INFO] [stderr] ...   |
[INFO] [stderr] 758 | |     };
[INFO] [stderr] 759 | | }
[INFO] [stderr]     | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro_diagnostic)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(proc_macro_span)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]     --> src/arch/x64/compiler.rs:1083:23
[INFO] [stderr]      |
[INFO] [stderr] 1083 |             (x @ b'A' ... b'P', &CleanArg::Direct{ref reg, ..}) if
[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/arch/x64/compiler.rs:1088:23
[INFO] [stderr]      |
[INFO] [stderr] 1088 |             (x @ b'Q' ... b'V', &CleanArg::Direct{ref reg, ..}) if
[INFO] [stderr]      |                       ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]     --> src/arch/x64/compiler.rs:1128:19
[INFO] [stderr]      |
[INFO] [stderr] 1128 |             (b'u' ... b'w', &CleanArg::Indirect {size, ref index, ..}) if
[INFO] [stderr]      |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]     --> src/arch/x64/compiler.rs:1132:19
[INFO] [stderr]      |
[INFO] [stderr] 1132 |             (b'u' ... b'w', &CleanArg::IndirectJumpTarget {size, ..}) => size,
[INFO] [stderr]      |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]     --> src/arch/x64/compiler.rs:1167:29
[INFO] [stderr]      |
[INFO] [stderr] 1167 |                 (b'*', b'A' ... b'P') |
[INFO] [stderr]      |                             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/arch/x64/debug.rs:98:13
[INFO] [stderr]    |
[INFO] [stderr] 98 |         b'A'...b'P' => {
[INFO] [stderr]    |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/arch/x64/debug.rs:115:13
[INFO] [stderr]     |
[INFO] [stderr] 115 |         b'Q'...b'V' => SEGREGS[ty as usize - 'Q' as usize].into(),
[INFO] [stderr]     |             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/arch/mod.rs:44:47
[INFO] [stderr]    |
[INFO] [stderr] 44 | pub(crate) fn from_str(s: &str) -> Option<Box<Arch>> {
[INFO] [stderr]    |                                               ^^^^ help: use `dyn`: `dyn Arch`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:219:27
[INFO] [stderr]     |
[INFO] [stderr] 219 |     pub current_arch: Box<arch::Arch>,
[INFO] [stderr]     |                           ^^^^^^^^^^ help: use `dyn`: `dyn arch::Arch`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `dynasm`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "acc9ab6a5ebb782749fdd395f77ad0869897847d7b7e4940796dd6e36a6cb0a9"`
[INFO] running `"docker" "rm" "-f" "acc9ab6a5ebb782749fdd395f77ad0869897847d7b7e4940796dd6e36a6cb0a9"`
[INFO] [stdout] acc9ab6a5ebb782749fdd395f77ad0869897847d7b7e4940796dd6e36a6cb0a9