[INFO] updating cached repository planetnoob/rust_intro
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/planetnoob/rust_intro
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/planetnoob/rust_intro" "work/ex/beta-1.37-6/sources/1.36.0/gh/planetnoob/rust_intro"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/planetnoob/rust_intro'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/planetnoob/rust_intro" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/planetnoob/rust_intro"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/planetnoob/rust_intro'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3e7175497dd123a41647dbb80268e2e61c8ab2d5
[INFO] sha for GitHub repo planetnoob/rust_intro: 3e7175497dd123a41647dbb80268e2e61c8ab2d5
[INFO] validating manifest of planetnoob/rust_intro 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 planetnoob/rust_intro 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 planetnoob/rust_intro
[INFO] finished frobbing planetnoob/rust_intro
[INFO] frobbed toml for planetnoob/rust_intro written to work/ex/beta-1.37-6/sources/1.36.0/gh/planetnoob/rust_intro/Cargo.toml
[INFO] started frobbing planetnoob/rust_intro
[INFO] finished frobbing planetnoob/rust_intro
[INFO] frobbed toml for planetnoob/rust_intro written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/planetnoob/rust_intro/Cargo.toml
[INFO] crate planetnoob/rust_intro 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 planetnoob/rust_intro 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-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/planetnoob/rust_intro:/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] fbce2dba4a7be15451573c1cc8e76fc38cf0beebfcf8a1b0ffa4d7f36e87d4f5
[INFO] running `"docker" "start" "-a" "fbce2dba4a7be15451573c1cc8e76fc38cf0beebfcf8a1b0ffa4d7f36e87d4f5"`
[INFO] [stderr]    Compiling rusty v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rust_commons/ownership/main.rs:157:9
[INFO] [stderr]     |
[INFO] [stderr] 157 |     let mut s3 = String::from("Hello, from the Inside!");
[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 3.58s
[INFO] running `"docker" "inspect" "fbce2dba4a7be15451573c1cc8e76fc38cf0beebfcf8a1b0ffa4d7f36e87d4f5"`
[INFO] running `"docker" "rm" "-f" "fbce2dba4a7be15451573c1cc8e76fc38cf0beebfcf8a1b0ffa4d7f36e87d4f5"`
[INFO] [stdout] fbce2dba4a7be15451573c1cc8e76fc38cf0beebfcf8a1b0ffa4d7f36e87d4f5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/planetnoob/rust_intro:/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] 9fa4dcbfec2b01bfd24ec8a176f5880108eaf9f08e49eba077a5381ff17ae9f3
[INFO] running `"docker" "start" "-a" "9fa4dcbfec2b01bfd24ec8a176f5880108eaf9f08e49eba077a5381ff17ae9f3"`
[INFO] [stderr]    Compiling rusty v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rust_commons/ownership/main.rs:157:9
[INFO] [stderr]     |
[INFO] [stderr] 157 |     let mut s3 = String::from("Hello, from the Inside!");
[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 2.70s
[INFO] running `"docker" "inspect" "9fa4dcbfec2b01bfd24ec8a176f5880108eaf9f08e49eba077a5381ff17ae9f3"`
[INFO] running `"docker" "rm" "-f" "9fa4dcbfec2b01bfd24ec8a176f5880108eaf9f08e49eba077a5381ff17ae9f3"`
[INFO] [stdout] 9fa4dcbfec2b01bfd24ec8a176f5880108eaf9f08e49eba077a5381ff17ae9f3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/planetnoob/rust_intro:/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] 4adadda9764dbf31b579cfe9e47032b898d273b3da17b4b551cef1383cbaafd2
[INFO] running `"docker" "start" "-a" "4adadda9764dbf31b579cfe9e47032b898d273b3da17b4b551cef1383cbaafd2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/guessing_game-cddb14f8981f5782
[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] [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] [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] [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/hello_world-c45e35bb516cc6db
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_commons-b7a2fbbb53a0c583
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_commons_controlflow-4a0ce2865c1283aa
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_commons_datatypes-497e03d0632ffe36
[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] [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] [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] [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] [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/rust_commons_functions-becb044971763dd0
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_commons_ownership-c97fa679f888158c
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_commons_refandborrow-12e4ce95eefc1612
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_commons_variables-547169b7b0b37bd4
[INFO] running `"docker" "inspect" "4adadda9764dbf31b579cfe9e47032b898d273b3da17b4b551cef1383cbaafd2"`
[INFO] running `"docker" "rm" "-f" "4adadda9764dbf31b579cfe9e47032b898d273b3da17b4b551cef1383cbaafd2"`
[INFO] [stdout] 4adadda9764dbf31b579cfe9e47032b898d273b3da17b4b551cef1383cbaafd2