[INFO] updating cached repository neivv/mtl
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/neivv/mtl
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/neivv/mtl" "work/ex/beta-1.38-1/sources/1.37.0/gh/neivv/mtl"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/neivv/mtl'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/neivv/mtl" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/neivv/mtl"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/neivv/mtl'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9944e195ffddc79c3de1c50004a1ccb9ffefeecc
[INFO] sha for GitHub repo neivv/mtl: 9944e195ffddc79c3de1c50004a1ccb9ffefeecc
[INFO] validating manifest of neivv/mtl 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 neivv/mtl 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 neivv/mtl
[INFO] finished frobbing neivv/mtl
[INFO] frobbed toml for neivv/mtl written to work/ex/beta-1.38-1/sources/1.37.0/gh/neivv/mtl/Cargo.toml
[INFO] started frobbing neivv/mtl
[INFO] finished frobbing neivv/mtl
[INFO] frobbed toml for neivv/mtl written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/neivv/mtl/Cargo.toml
[INFO] crate neivv/mtl 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 neivv/mtl 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/neivv/mtl:/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] 810cce25d9d48914e7b9264ceaa844c353f78ccd75d198b19d6bcd885e860afe
[INFO] running `"docker" "start" "-a" "810cce25d9d48914e7b9264ceaa844c353f78ccd75d198b19d6bcd885e860afe"`
[INFO] [stderr]    Compiling libc v0.2.55
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.91
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling smallvec v0.6.9
[INFO] [stderr]    Compiling scopeguard v1.0.0
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.14
[INFO] [stderr]    Compiling lde v0.2.0
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling lock_api v0.2.0
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling backtrace v0.3.26
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling fern v0.5.8
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling pcx v0.2.3
[INFO] [stderr]    Compiling whack v0.2.0 (https://github.com/neivv/whack/#346f554a)
[INFO] [stderr] error[E0432]: unresolved import `win_common`
[INFO] [stderr]   --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/x86_64.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub use win_common::*;
[INFO] [stderr]    |         ^^^^^^^^^^ maybe a missing `extern crate win_common;`?
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `ExecutableHeap` in `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:423:34
[INFO] [stderr]     |
[INFO] [stderr] 423 |             exec_heap: platform::ExecutableHeap::new(),
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^ could not find `ExecutableHeap` in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `MemoryProtection` in `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:630:44
[INFO] [stderr]     |
[INFO] [stderr] 630 |                 let protection = platform::MemoryProtection::new(handle);
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^^ could not find `MemoryProtection` in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `MemoryProtection` in `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:666:52
[INFO] [stderr]     |
[INFO] [stderr] 666 |                         let protection = platform::MemoryProtection::new(handles.write);
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^^^^^ could not find `MemoryProtection` in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: could not find `MemoryProtection` in `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:849:45
[INFO] [stderr]     |
[INFO] [stderr] 849 |                     _protection = platform::MemoryProtection::new(handles.write);
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^ could not find `MemoryProtection` in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ExecutableHeap` in module `platform`
[INFO] [stderr]   --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/macros.rs:24:37
[INFO] [stderr]    |
[INFO] [stderr] 24 |         exec_heap: &mut ::platform::ExecutableHeap,
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ExecutableHeap` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/macros.rs:443:26
[INFO] [stderr]     |
[INFO] [stderr] 443 |     heap: &mut platform::ExecutableHeap,
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ExecutableHeap` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/x86_64.rs:396:45
[INFO] [stderr]     |
[INFO] [stderr] 396 |     pub fn write(&mut self, exec_heap: &mut ExecutableHeap) -> *const u8 {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ExecutableHeap` in this scope
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/x86_64.rs:431:20
[INFO] [stderr]     |
[INFO] [stderr] 431 |         heap: &mut ExecutableHeap,
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ExecutableHeap` in module `platform`
[INFO] [stderr]   --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:40:47
[INFO] [stderr]    |
[INFO] [stderr] 40 | type InitFn = unsafe fn(usize, &mut platform::ExecutableHeap);
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `LibraryName` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:116:27
[INFO] [stderr]     |
[INFO] [stderr] 116 |     Library(Arc<platform::LibraryName>),
[INFO] [stderr]     |                           ^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `exe_handle` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:135:74
[INFO] [stderr]     |
[INFO] [stderr] 135 |         ImageBase::Executable => Some(PatchEnableHandles::same(platform::exe_handle())),
[INFO] [stderr]     |                                                                          ^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `library_name_to_handle` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:137:23
[INFO] [stderr]     |
[INFO] [stderr] 137 |             platform::library_name_to_handle(s).map(|x| PatchEnableHandles::same(x))
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `LibraryHandle` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:140:37
[INFO] [stderr]     |
[INFO] [stderr] 140 |             exec: exec as platform::LibraryHandle,
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `LibraryHandle` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:141:39
[INFO] [stderr]     |
[INFO] [stderr] 141 |             write: write as platform::LibraryHandle,
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `LibraryHandle` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:148:21
[INFO] [stderr]     |
[INFO] [stderr] 148 |     exec: platform::LibraryHandle,
[INFO] [stderr]     |                     ^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `LibraryHandle` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:149:22
[INFO] [stderr]     |
[INFO] [stderr] 149 |     write: platform::LibraryHandle,
[INFO] [stderr]     |                      ^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `LibraryHandle` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:153:31
[INFO] [stderr]     |
[INFO] [stderr] 153 |     fn same(handle: platform::LibraryHandle) -> PatchEnableHandles {
[INFO] [stderr]     |                               ^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ExecutableHeap` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:230:30
[INFO] [stderr]     |
[INFO] [stderr] 230 |         heap: &mut platform::ExecutableHeap
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `import_addr` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:293:38
[INFO] [stderr]     |
[INFO] [stderr] 293 |                 let addr = platform::import_addr(handles.write, &hook.library, &hook.export);
[INFO] [stderr]     |                                      ^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `LibraryHandle` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:309:59
[INFO] [stderr]     |
[INFO] [stderr] 309 |     unsafe fn disable(&mut self, handle: Option<platform::LibraryHandle>) {
[INFO] [stderr]     |                                                           ^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `import_addr` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:333:46
[INFO] [stderr]     |
[INFO] [stderr] 333 |                         let addr = platform::import_addr(handle, &hook.library, &hook.export);
[INFO] [stderr]     |                                              ^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ExecutableHeap` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:367:26
[INFO] [stderr]     |
[INFO] [stderr] 367 |     exec_heap: platform::ExecutableHeap,
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `library_name` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:459:63
[INFO] [stderr]     |
[INFO] [stderr] 459 |             image_base: ImageBase::Library(Arc::new(platform::library_name(library))),
[INFO] [stderr]     |                                                               ^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `LibraryHandle` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:619:48
[INFO] [stderr]     |
[INFO] [stderr] 619 |         protections: &mut SmallVec<[(platform::LibraryHandle, platform::MemoryProtection); 16]>,
[INFO] [stderr]     |                                                ^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `MemoryProtection` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:619:73
[INFO] [stderr]     |
[INFO] [stderr] 619 |         protections: &mut SmallVec<[(platform::LibraryHandle, platform::MemoryProtection); 16]>,
[INFO] [stderr]     |                                                                         ^^^^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `LibraryHandle` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:624:27
[INFO] [stderr]     |
[INFO] [stderr] 624 |                 platform::LibraryHandle,
[INFO] [stderr]     |                           ^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `MemoryProtection` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:625:27
[INFO] [stderr]     |
[INFO] [stderr] 625 |                 platform::MemoryProtection,
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `LibraryHandle` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:657:33
[INFO] [stderr]     |
[INFO] [stderr] 657 |         -> SmallVec<[(platform::LibraryHandle, platform::MemoryProtection); 16]>
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `MemoryProtection` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:657:58
[INFO] [stderr]     |
[INFO] [stderr] 657 |         -> SmallVec<[(platform::LibraryHandle, platform::MemoryProtection); 16]>
[INFO] [stderr]     |                                                          ^^^^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `LibraryHandle` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:661:36
[INFO] [stderr]     |
[INFO] [stderr] 661 |             SmallVec::<[(platform::LibraryHandle, platform::MemoryProtection); 16]>::new();
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `MemoryProtection` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:661:61
[INFO] [stderr]     |
[INFO] [stderr] 661 |             SmallVec::<[(platform::LibraryHandle, platform::MemoryProtection); 16]>::new();
[INFO] [stderr]     |                                                             ^^^^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `nop` in module `platform`
[INFO] [stderr]    --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:900:57
[INFO] [stderr]     |
[INFO] [stderr] 900 |         let nops: SmallVec<[u8; 16]> = repeat(platform::nop()).take(length).collect();
[INFO] [stderr]     |                                                         ^^^ not found in `platform`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `redirect_stderr` in module `platform`
[INFO] [stderr]     --> /opt/crater/cargo-home/git/checkouts/whack-747fafa4bbcff5a8/346f554/src/lib.rs:1029:15
[INFO] [stderr]      |
[INFO] [stderr] 1029 |     platform::redirect_stderr(filename.as_ref())
[INFO] [stderr]      |               ^^^^^^^^^^^^^^^ not found in `platform`
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]      |
[INFO] [stderr] 42   | use redirect_stderr;
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 34 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0425, E0432, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] error: Could not compile `whack`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "810cce25d9d48914e7b9264ceaa844c353f78ccd75d198b19d6bcd885e860afe"`
[INFO] running `"docker" "rm" "-f" "810cce25d9d48914e7b9264ceaa844c353f78ccd75d198b19d6bcd885e860afe"`
[INFO] [stdout] 810cce25d9d48914e7b9264ceaa844c353f78ccd75d198b19d6bcd885e860afe