[INFO] crate mappedheap 0.1.1 is already in cache
[INFO] extracting crate mappedheap 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/mappedheap/0.1.1
[INFO] extracting crate mappedheap 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mappedheap/0.1.1
[INFO] validating manifest of mappedheap-0.1.1 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 mappedheap-0.1.1 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 mappedheap-0.1.1
[INFO] finished frobbing mappedheap-0.1.1
[INFO] frobbed toml for mappedheap-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/mappedheap/0.1.1/Cargo.toml
[INFO] started frobbing mappedheap-0.1.1
[INFO] finished frobbing mappedheap-0.1.1
[INFO] frobbed toml for mappedheap-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mappedheap/0.1.1/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] [stderr]     Blocking waiting for file lock on package cache
[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] testing mappedheap-0.1.1 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-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mappedheap/0.1.1:/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] d121111c2b572afd8a33a491f36cd8e9f7e31dab1c4f145c9a5d2c350b354c3b
[INFO] running `"docker" "start" "-a" "d121111c2b572afd8a33a491f36cd8e9f7e31dab1c4f145c9a5d2c350b354c3b"`
[INFO] [stderr]    Compiling integer-atomics v1.0.2
[INFO] [stderr]    Compiling lock-wrappers v0.1.2
[INFO] [stderr]    Compiling futex v0.1.3
[INFO] [stderr]    Compiling mappedheap v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/lib.rs:231:14
[INFO] [stderr]     |
[INFO] [stderr] 231 |         Some(((fragment.addr + (id - fragment.offset) as usize * PAGESZ) as *mut [u8; PAGESZ]))
[INFO] [stderr]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `new` found for type `futex::raw::Mutex` in the current scope
[INFO] [stderr]    --> src/lib.rs:115:33
[INFO] [stderr]     |
[INFO] [stderr] 115 |             resize_lock: Mutex::new(),
[INFO] [stderr]     |                                 ^^^ function or associated item not found in `futex::raw::Mutex`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no function or associated item named `new` found for type `futex::raw::Mutex` in the current scope
[INFO] [stderr]    --> src/lib.rs:117:32
[INFO] [stderr]     |
[INFO] [stderr] 117 |             alloc_lock: Mutex::new(),
[INFO] [stderr]     |                                ^^^ function or associated item not found in `futex::raw::Mutex`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `acquire` found for type `futex::raw::Mutex` in the current scope
[INFO] [stderr]    --> src/lib.rs:273:28
[INFO] [stderr]     |
[INFO] [stderr] 273 |         header.resize_lock.acquire();
[INFO] [stderr]     |                            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `release` found for type `futex::raw::Mutex` in the current scope
[INFO] [stderr]    --> src/lib.rs:276:28
[INFO] [stderr]     |
[INFO] [stderr] 276 |         header.resize_lock.release();
[INFO] [stderr]     |                            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `acquire` found for type `futex::raw::Mutex` in the current scope
[INFO] [stderr]    --> src/lib.rs:294:34
[INFO] [stderr]     |
[INFO] [stderr] 294 |         self.header().alloc_lock.acquire();
[INFO] [stderr]     |                                  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `release` found for type `futex::raw::Mutex` in the current scope
[INFO] [stderr]    --> src/lib.rs:331:34
[INFO] [stderr]     |
[INFO] [stderr] 331 |         self.header().alloc_lock.release();
[INFO] [stderr]     |                                  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `acquire` found for type `futex::raw::Mutex` in the current scope
[INFO] [stderr]    --> src/lib.rs:364:27
[INFO] [stderr]     |
[INFO] [stderr] 364 |         header.alloc_lock.acquire();
[INFO] [stderr]     |                           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `release` found for type `futex::raw::Mutex` in the current scope
[INFO] [stderr]    --> src/lib.rs:374:35
[INFO] [stderr]     |
[INFO] [stderr] 374 |                 header.alloc_lock.release();
[INFO] [stderr]     |                                   ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `release` found for type `futex::raw::Mutex` in the current scope
[INFO] [stderr]    --> src/lib.rs:384:27
[INFO] [stderr]     |
[INFO] [stderr] 384 |         header.alloc_lock.release();
[INFO] [stderr]     |                           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 9 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `mappedheap`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d121111c2b572afd8a33a491f36cd8e9f7e31dab1c4f145c9a5d2c350b354c3b"`
[INFO] running `"docker" "rm" "-f" "d121111c2b572afd8a33a491f36cd8e9f7e31dab1c4f145c9a5d2c350b354c3b"`
[INFO] [stdout] d121111c2b572afd8a33a491f36cd8e9f7e31dab1c4f145c9a5d2c350b354c3b