[INFO] updating cached repository m4b/cargo-sym
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/m4b/cargo-sym
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/m4b/cargo-sym" "work/ex/beta-1.37-6/sources/1.36.0/gh/m4b/cargo-sym"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/m4b/cargo-sym'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/m4b/cargo-sym" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/m4b/cargo-sym"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/m4b/cargo-sym'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9622ffb7217d565b03bf90cba19df3bc781c8b0f
[INFO] sha for GitHub repo m4b/cargo-sym: 9622ffb7217d565b03bf90cba19df3bc781c8b0f
[INFO] validating manifest of m4b/cargo-sym 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 m4b/cargo-sym 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 m4b/cargo-sym
[INFO] finished frobbing m4b/cargo-sym
[INFO] frobbed toml for m4b/cargo-sym written to work/ex/beta-1.37-6/sources/1.36.0/gh/m4b/cargo-sym/Cargo.toml
[INFO] started frobbing m4b/cargo-sym
[INFO] finished frobbing m4b/cargo-sym
[INFO] frobbed toml for m4b/cargo-sym written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/m4b/cargo-sym/Cargo.toml
[INFO] crate m4b/cargo-sym 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 m4b/cargo-sym against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/m4b/cargo-sym:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 7b87518788d9b31e2d516d3101f4835cc0642ef051e89c0b41b92c9080748f03
[INFO] running `"docker" "start" "-a" "7b87518788d9b31e2d516d3101f4835cc0642ef051e89c0b41b92c9080748f03"`
[INFO] [stderr]    Compiling quote v0.3.12
[INFO] [stderr]    Compiling scroll v0.3.0
[INFO] [stderr]    Compiling walkdir v1.0.1
[INFO] [stderr]    Compiling term_size v0.2.1
[INFO] [stderr]    Compiling capstone-sys v0.2.0
[INFO] [stderr]    Compiling clap v2.18.0
[INFO] [stderr]    Compiling syn v0.10.7
[INFO] [stderr]    Compiling scroll_derive v0.3.0
[INFO] [stderr]    Compiling goblin v0.0.8
[INFO] [stderr]    Compiling capstone3 v0.1.0
[INFO] [stderr]    Compiling cargo-sym v0.0.6 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let mut hex_buffer = &mut stack_buffer[..column_width * NCOLUMNS];
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:404:9
[INFO] [stderr]     |
[INFO] [stderr] 404 |     let mut bytes = &mut Cursor::new(&buffer);
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.10s
[INFO] running `"docker" "inspect" "7b87518788d9b31e2d516d3101f4835cc0642ef051e89c0b41b92c9080748f03"`
[INFO] running `"docker" "rm" "-f" "7b87518788d9b31e2d516d3101f4835cc0642ef051e89c0b41b92c9080748f03"`
[INFO] [stdout] 7b87518788d9b31e2d516d3101f4835cc0642ef051e89c0b41b92c9080748f03
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/m4b/cargo-sym:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] adaa896e0fb9095abe07e9694776c4d365def9c3982bb2a24b75f990df86d6e7
[INFO] running `"docker" "start" "-a" "adaa896e0fb9095abe07e9694776c4d365def9c3982bb2a24b75f990df86d6e7"`
[INFO] [stderr]    Compiling cargo-sym v0.0.6 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |         let mut hex_buffer = &mut stack_buffer[..column_width * NCOLUMNS];
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:404:9
[INFO] [stderr]     |
[INFO] [stderr] 404 |     let mut bytes = &mut Cursor::new(&buffer);
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "adaa896e0fb9095abe07e9694776c4d365def9c3982bb2a24b75f990df86d6e7"`
[INFO] running `"docker" "rm" "-f" "adaa896e0fb9095abe07e9694776c4d365def9c3982bb2a24b75f990df86d6e7"`
[INFO] [stdout] adaa896e0fb9095abe07e9694776c4d365def9c3982bb2a24b75f990df86d6e7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/m4b/cargo-sym:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] b00f277e65663628dd46a8ebe05174ace7fa033a2a955baab123644d3629f569
[INFO] running `"docker" "start" "-a" "b00f277e65663628dd46a8ebe05174ace7fa033a2a955baab123644d3629f569"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cargo_sym-aa22955f1b028a9b
[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" "b00f277e65663628dd46a8ebe05174ace7fa033a2a955baab123644d3629f569"`
[INFO] running `"docker" "rm" "-f" "b00f277e65663628dd46a8ebe05174ace7fa033a2a955baab123644d3629f569"`
[INFO] [stdout] b00f277e65663628dd46a8ebe05174ace7fa033a2a955baab123644d3629f569