[INFO] updating cached repository WSlatton/simple-vm
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/WSlatton/simple-vm
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/WSlatton/simple-vm" "work/ex/beta-1.38-1/sources/1.37.0/gh/WSlatton/simple-vm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/WSlatton/simple-vm'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/WSlatton/simple-vm" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/WSlatton/simple-vm"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/WSlatton/simple-vm'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 850879ceea0da49189ccc0138f19985e68351ed3
[INFO] sha for GitHub repo WSlatton/simple-vm: 850879ceea0da49189ccc0138f19985e68351ed3
[INFO] validating manifest of WSlatton/simple-vm 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 WSlatton/simple-vm 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 WSlatton/simple-vm
[INFO] finished frobbing WSlatton/simple-vm
[INFO] frobbed toml for WSlatton/simple-vm written to work/ex/beta-1.38-1/sources/1.37.0/gh/WSlatton/simple-vm/Cargo.toml
[INFO] started frobbing WSlatton/simple-vm
[INFO] finished frobbing WSlatton/simple-vm
[INFO] frobbed toml for WSlatton/simple-vm written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/WSlatton/simple-vm/Cargo.toml
[INFO] crate WSlatton/simple-vm 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 WSlatton/simple-vm 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-5/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/WSlatton/simple-vm:/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] 4c4ee5694cf4d0790cb5963954f44f51bff264f89c7edb53f22255a1b2979cb1
[INFO] running `"docker" "start" "-a" "4c4ee5694cf4d0790cb5963954f44f51bff264f89c7edb53f22255a1b2979cb1"`
[INFO] [stderr]    Compiling simple-vm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `num_args`
[INFO] [stderr]   --> src/vm.rs:60:42
[INFO] [stderr]    |
[INFO] [stderr] 60 |             Op::BeginFunction(Function { num_args }) => {
[INFO] [stderr]    |                                          ^^^^^^^^ help: try ignoring the field: `num_args: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Static`
[INFO] [stderr]   --> src/ast.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     Static(usize),
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `"docker" "inspect" "4c4ee5694cf4d0790cb5963954f44f51bff264f89c7edb53f22255a1b2979cb1"`
[INFO] running `"docker" "rm" "-f" "4c4ee5694cf4d0790cb5963954f44f51bff264f89c7edb53f22255a1b2979cb1"`
[INFO] [stdout] 4c4ee5694cf4d0790cb5963954f44f51bff264f89c7edb53f22255a1b2979cb1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/WSlatton/simple-vm:/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] f6194b5814607de459083b2986ffa3c574089235e722100cf69d67c7f59fdae3
[INFO] running `"docker" "start" "-a" "f6194b5814607de459083b2986ffa3c574089235e722100cf69d67c7f59fdae3"`
[INFO] [stderr]    Compiling simple-vm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `num_args`
[INFO] [stderr]   --> src/vm.rs:60:42
[INFO] [stderr]    |
[INFO] [stderr] 60 |             Op::BeginFunction(Function { num_args }) => {
[INFO] [stderr]    |                                          ^^^^^^^^ help: try ignoring the field: `num_args: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Static`
[INFO] [stderr]   --> src/ast.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     Static(usize),
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "f6194b5814607de459083b2986ffa3c574089235e722100cf69d67c7f59fdae3"`
[INFO] running `"docker" "rm" "-f" "f6194b5814607de459083b2986ffa3c574089235e722100cf69d67c7f59fdae3"`
[INFO] [stdout] f6194b5814607de459083b2986ffa3c574089235e722100cf69d67c7f59fdae3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/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/WSlatton/simple-vm:/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] 4f82c5d01eb693a0077b2f53ce5d9ce21d535db1408750075fdeec1d57a1e926
[INFO] running `"docker" "start" "-a" "4f82c5d01eb693a0077b2f53ce5d9ce21d535db1408750075fdeec1d57a1e926"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/simple_vm-9b1a29a131efb29c
[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" "4f82c5d01eb693a0077b2f53ce5d9ce21d535db1408750075fdeec1d57a1e926"`
[INFO] running `"docker" "rm" "-f" "4f82c5d01eb693a0077b2f53ce5d9ce21d535db1408750075fdeec1d57a1e926"`
[INFO] [stdout] 4f82c5d01eb693a0077b2f53ce5d9ce21d535db1408750075fdeec1d57a1e926