[INFO] updating cached repository Tahler/snoss
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Tahler/snoss
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Tahler/snoss" "work/ex/beta-1.37-6/sources/1.36.0/gh/Tahler/snoss"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Tahler/snoss'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Tahler/snoss" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tahler/snoss"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tahler/snoss'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d4dca754c3e97fa7119cc71170c5f54a8a3e71d8
[INFO] sha for GitHub repo Tahler/snoss: d4dca754c3e97fa7119cc71170c5f54a8a3e71d8
[INFO] validating manifest of Tahler/snoss on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Tahler/snoss on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Tahler/snoss
[INFO] finished frobbing Tahler/snoss
[INFO] frobbed toml for Tahler/snoss written to work/ex/beta-1.37-6/sources/1.36.0/gh/Tahler/snoss/Cargo.toml
[INFO] started frobbing Tahler/snoss
[INFO] finished frobbing Tahler/snoss
[INFO] frobbed toml for Tahler/snoss written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tahler/snoss/Cargo.toml
[INFO] crate Tahler/snoss already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Tahler/snoss against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tahler/snoss:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 55e70b156163aefc7da6149a491e822ce486ddbca3c9406b74bc31f396cd685a
[INFO] running `"docker" "start" "-a" "55e70b156163aefc7da6149a491e822ce486ddbca3c9406b74bc31f396cd685a"`
[INFO] [stderr]    Compiling quote v0.3.12
[INFO] [stderr]    Compiling quick-error v1.1.0
[INFO] [stderr]    Compiling log-mdc v0.1.0
[INFO] [stderr]    Compiling miniz-sys v0.1.9
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling unsafe-any v0.4.1
[INFO] [stderr]    Compiling ordered-float v0.4.0
[INFO] [stderr]    Compiling chrono v0.3.0
[INFO] [stderr]    Compiling typemap v0.3.3
[INFO] [stderr]    Compiling humantime v1.0.0
[INFO] [stderr]    Compiling serde-value v0.4.0
[INFO] [stderr]    Compiling syn v0.11.4
[INFO] [stderr]    Compiling flate2 v0.2.17
[INFO] [stderr]    Compiling serde_yaml v0.6.1
[INFO] [stderr]    Compiling serde_codegen_internals v0.13.0
[INFO] [stderr]    Compiling serde_derive v0.9.7
[INFO] [stderr]    Compiling log4rs v0.6.1
[INFO] [stderr]    Compiling snoss v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/os/exec.rs:194:13
[INFO] [stderr]     |
[INFO] [stderr] 194 |         let mut stack = pcb.get_stack_mut();
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.10s
[INFO] running `"docker" "inspect" "55e70b156163aefc7da6149a491e822ce486ddbca3c9406b74bc31f396cd685a"`
[INFO] running `"docker" "rm" "-f" "55e70b156163aefc7da6149a491e822ce486ddbca3c9406b74bc31f396cd685a"`
[INFO] [stdout] 55e70b156163aefc7da6149a491e822ce486ddbca3c9406b74bc31f396cd685a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tahler/snoss:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 182e0bcdcc31b931fcba10a4b8838f150bad9569b6f3522d8295c2b6be1fc03e
[INFO] running `"docker" "start" "-a" "182e0bcdcc31b931fcba10a4b8838f150bad9569b6f3522d8295c2b6be1fc03e"`
[INFO] [stderr]    Compiling snoss v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/os/exec.rs:194:13
[INFO] [stderr]     |
[INFO] [stderr] 194 |         let mut stack = pcb.get_stack_mut();
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `"docker" "inspect" "182e0bcdcc31b931fcba10a4b8838f150bad9569b6f3522d8295c2b6be1fc03e"`
[INFO] running `"docker" "rm" "-f" "182e0bcdcc31b931fcba10a4b8838f150bad9569b6f3522d8295c2b6be1fc03e"`
[INFO] [stdout] 182e0bcdcc31b931fcba10a4b8838f150bad9569b6f3522d8295c2b6be1fc03e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Tahler/snoss:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 2523ae23187a69f5713f85524a4400011f834230ad01b7377211e2e77571bd48
[INFO] running `"docker" "start" "-a" "2523ae23187a69f5713f85524a4400011f834230ad01b7377211e2e77571bd48"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/snoss-0a4434c19ca0d307
[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" "2523ae23187a69f5713f85524a4400011f834230ad01b7377211e2e77571bd48"`
[INFO] running `"docker" "rm" "-f" "2523ae23187a69f5713f85524a4400011f834230ad01b7377211e2e77571bd48"`
[INFO] [stdout] 2523ae23187a69f5713f85524a4400011f834230ad01b7377211e2e77571bd48