[INFO] updating cached repository benjaminhadfield/mmu
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/benjaminhadfield/mmu
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/benjaminhadfield/mmu" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/benjaminhadfield/mmu"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/benjaminhadfield/mmu'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/benjaminhadfield/mmu" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/benjaminhadfield/mmu"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/benjaminhadfield/mmu'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c2608b8855ef509e896b9f46f439ef0d42417022
[INFO] sha for GitHub repo benjaminhadfield/mmu: c2608b8855ef509e896b9f46f439ef0d42417022
[INFO] validating manifest of benjaminhadfield/mmu on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of benjaminhadfield/mmu on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing benjaminhadfield/mmu
[INFO] finished frobbing benjaminhadfield/mmu
[INFO] frobbed toml for benjaminhadfield/mmu written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/benjaminhadfield/mmu/Cargo.toml
[INFO] started frobbing benjaminhadfield/mmu
[INFO] finished frobbing benjaminhadfield/mmu
[INFO] frobbed toml for benjaminhadfield/mmu written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/benjaminhadfield/mmu/Cargo.toml
[INFO] crate benjaminhadfield/mmu has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] building benjaminhadfield/mmu against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/benjaminhadfield/mmu:/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 7698f35e903bb0ab6d09525afea10fa6c02b2c4d1a862331446f7772d51422d6
[INFO] running `"docker" "start" "-a" "7698f35e903bb0ab6d09525afea10fa6c02b2c4d1a862331446f7772d51422d6"`
[INFO] [stderr]    Compiling mmu v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `e`
[INFO] [stderr]   --> src/hardware.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     e: u8,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `s`
[INFO] [stderr]   --> src/hardware.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     s: u8,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tlb`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let tlb = hardware::TLB::new(4, 4);
[INFO] [stderr]   |         ^^^ help: consider prefixing with an underscore: `_tlb`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "7698f35e903bb0ab6d09525afea10fa6c02b2c4d1a862331446f7772d51422d6"`
[INFO] running `"docker" "rm" "-f" "7698f35e903bb0ab6d09525afea10fa6c02b2c4d1a862331446f7772d51422d6"`
[INFO] [stdout] 7698f35e903bb0ab6d09525afea10fa6c02b2c4d1a862331446f7772d51422d6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/benjaminhadfield/mmu:/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 84aa26699faca177ad5c9413a8fa881953089f41abba538f321d121b92d0db8e
[INFO] running `"docker" "start" "-a" "84aa26699faca177ad5c9413a8fa881953089f41abba538f321d121b92d0db8e"`
[INFO] [stderr]    Compiling mmu v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `e`
[INFO] [stderr]   --> src/hardware.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     e: u8,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `s`
[INFO] [stderr]   --> src/hardware.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     s: u8,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tlb`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let tlb = hardware::TLB::new(4, 4);
[INFO] [stderr]   |         ^^^ help: consider prefixing with an underscore: `_tlb`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `"docker" "inspect" "84aa26699faca177ad5c9413a8fa881953089f41abba538f321d121b92d0db8e"`
[INFO] running `"docker" "rm" "-f" "84aa26699faca177ad5c9413a8fa881953089f41abba538f321d121b92d0db8e"`
[INFO] [stdout] 84aa26699faca177ad5c9413a8fa881953089f41abba538f321d121b92d0db8e