[INFO] updating cached repository zesterer/fuckvm
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/zesterer/fuckvm
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/zesterer/fuckvm" "work/ex/beta-1.38-1/sources/1.37.0/gh/zesterer/fuckvm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/zesterer/fuckvm'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/zesterer/fuckvm" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zesterer/fuckvm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zesterer/fuckvm'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cf2751673cba6fe0eba6495ce0585958097add51
[INFO] sha for GitHub repo zesterer/fuckvm: cf2751673cba6fe0eba6495ce0585958097add51
[INFO] validating manifest of zesterer/fuckvm 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 zesterer/fuckvm 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 zesterer/fuckvm
[INFO] finished frobbing zesterer/fuckvm
[INFO] frobbed toml for zesterer/fuckvm written to work/ex/beta-1.38-1/sources/1.37.0/gh/zesterer/fuckvm/Cargo.toml
[INFO] started frobbing zesterer/fuckvm
[INFO] finished frobbing zesterer/fuckvm
[INFO] frobbed toml for zesterer/fuckvm written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/zesterer/fuckvm/Cargo.toml
[INFO] crate zesterer/fuckvm 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing zesterer/fuckvm 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/gh/zesterer/fuckvm:/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] 6b8448d86e8a3fd6891a876cdedf552ca14c9a10716025b8a0d9fe73b148bae1
[INFO] running `"docker" "start" "-a" "6b8448d86e8a3fd6891a876cdedf552ca14c9a10716025b8a0d9fe73b148bae1"`
[INFO] [stderr]    Compiling fuckvm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/bf/bfir.rs:113:17
[INFO] [stderr]     |
[INFO] [stderr] 113 |                 _ => unimplemented!(),
[INFO] [stderr]     |                 ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/ir/lir.rs:165:21
[INFO] [stderr]     |
[INFO] [stderr] 165 |                     _ => unimplemented!(),
[INFO] [stderr]     |                     ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack_size`
[INFO] [stderr]    --> src/bf/bfir.rs:111:37
[INFO] [stderr]     |
[INFO] [stderr] 111 |                 lir::Branch::Return(stack_size) =>
[INFO] [stderr]     |                                     ^^^^^^^^^^ help: consider prefixing with an underscore: `_stack_size`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SCRATCH_3`
[INFO] [stderr]    --> src/bf/bfir.rs:165:1
[INFO] [stderr]     |
[INFO] [stderr] 165 | const SCRATCH_3: usize = 9;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sub_byte_zeroing`
[INFO] [stderr]    --> src/bf/bfir.rs:189:1
[INFO] [stderr]     |
[INFO] [stderr] 189 | fn sub_byte_zeroing(from: usize, to: usize) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/test.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     vm.exec(&bf);
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.79s
[INFO] running `"docker" "inspect" "6b8448d86e8a3fd6891a876cdedf552ca14c9a10716025b8a0d9fe73b148bae1"`
[INFO] running `"docker" "rm" "-f" "6b8448d86e8a3fd6891a876cdedf552ca14c9a10716025b8a0d9fe73b148bae1"`
[INFO] [stdout] 6b8448d86e8a3fd6891a876cdedf552ca14c9a10716025b8a0d9fe73b148bae1
[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/gh/zesterer/fuckvm:/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] d5ba04ea6ac2784ecffad6f181925ad181e6206410858fef7ed099b4b0d6f73e
[INFO] running `"docker" "start" "-a" "d5ba04ea6ac2784ecffad6f181925ad181e6206410858fef7ed099b4b0d6f73e"`
[INFO] [stderr]    Compiling fuckvm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/test.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     vm.exec(&bf);
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/bf/bfir.rs:113:17
[INFO] [stderr]     |
[INFO] [stderr] 113 |                 _ => unimplemented!(),
[INFO] [stderr]     |                 ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/ir/lir.rs:165:21
[INFO] [stderr]     |
[INFO] [stderr] 165 |                     _ => unimplemented!(),
[INFO] [stderr]     |                     ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stack_size`
[INFO] [stderr]    --> src/bf/bfir.rs:111:37
[INFO] [stderr]     |
[INFO] [stderr] 111 |                 lir::Branch::Return(stack_size) =>
[INFO] [stderr]     |                                     ^^^^^^^^^^ help: consider prefixing with an underscore: `_stack_size`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `SCRATCH_3`
[INFO] [stderr]    --> src/bf/bfir.rs:165:1
[INFO] [stderr]     |
[INFO] [stderr] 165 | const SCRATCH_3: usize = 9;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sub_byte_zeroing`
[INFO] [stderr]    --> src/bf/bfir.rs:189:1
[INFO] [stderr]     |
[INFO] [stderr] 189 | fn sub_byte_zeroing(from: usize, to: usize) -> String {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `"docker" "inspect" "d5ba04ea6ac2784ecffad6f181925ad181e6206410858fef7ed099b4b0d6f73e"`
[INFO] running `"docker" "rm" "-f" "d5ba04ea6ac2784ecffad6f181925ad181e6206410858fef7ed099b4b0d6f73e"`
[INFO] [stdout] d5ba04ea6ac2784ecffad6f181925ad181e6206410858fef7ed099b4b0d6f73e
[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/gh/zesterer/fuckvm:/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"`
[INFO] [stdout] d3b9b29b56957b76307aaa0aea3c42354be99d6106947bd387e6683d034a8878
[INFO] running `"docker" "start" "-a" "d3b9b29b56957b76307aaa0aea3c42354be99d6106947bd387e6683d034a8878"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/fuckvm-116b8ac23b6c448c
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/test-06325935bcd9e8db
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/vm-9464f062007d6a97
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fuckvm
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "d3b9b29b56957b76307aaa0aea3c42354be99d6106947bd387e6683d034a8878"`
[INFO] running `"docker" "rm" "-f" "d3b9b29b56957b76307aaa0aea3c42354be99d6106947bd387e6683d034a8878"`
[INFO] [stdout] d3b9b29b56957b76307aaa0aea3c42354be99d6106947bd387e6683d034a8878