[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-1.38-1/sources/1.37.0/gh/planetnoob/rust_intro"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/planetnoob/rust_intro'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/planetnoob/rust_intro" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/planetnoob/rust_intro"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of planetnoob/rust_intro 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 planetnoob/rust_intro
[INFO] finished frobbing planetnoob/rust_intro
[INFO] frobbed toml for planetnoob/rust_intro written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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 planetnoob/rust_intro against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 41a1d2556afd853f2dc3721fe5331ca0d800755e7a09b2582ab36960ea96ea34
[INFO] running `"docker" "start" "-a" "41a1d2556afd853f2dc3721fe5331ca0d800755e7a09b2582ab36960ea96ea34"`
[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 2.66s
[INFO] running `"docker" "inspect" "41a1d2556afd853f2dc3721fe5331ca0d800755e7a09b2582ab36960ea96ea34"`
[INFO] running `"docker" "rm" "-f" "41a1d2556afd853f2dc3721fe5331ca0d800755e7a09b2582ab36960ea96ea34"`
[INFO] [stdout] 41a1d2556afd853f2dc3721fe5331ca0d800755e7a09b2582ab36960ea96ea34
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9f9b7b1c44e6f814064c69067f846573c084daeeca38098bf4320917703faad0
[INFO] running `"docker" "start" "-a" "9f9b7b1c44e6f814064c69067f846573c084daeeca38098bf4320917703faad0"`
[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 2.74s
[INFO] running `"docker" "inspect" "9f9b7b1c44e6f814064c69067f846573c084daeeca38098bf4320917703faad0"`
[INFO] running `"docker" "rm" "-f" "9f9b7b1c44e6f814064c69067f846573c084daeeca38098bf4320917703faad0"`
[INFO] [stdout] 9f9b7b1c44e6f814064c69067f846573c084daeeca38098bf4320917703faad0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 77d270ca5c93c10bf5c76b90f26a5901e872d80a292496a948845ef917870cb3
[INFO] running `"docker" "start" "-a" "77d270ca5c93c10bf5c76b90f26a5901e872d80a292496a948845ef917870cb3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/guessing_game-fb26073072afec0e
[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] [stderr]      Running /opt/crater/target/debug/deps/hello_world-5736a8f504a702a3
[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] [stderr]      Running /opt/crater/target/debug/deps/rust_commons-9e3e99cbdb62f756
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_commons_controlflow-c29ff08a280d339a
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_commons_datatypes-9796e63eb8ce6734
[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] [stderr]      Running /opt/crater/target/debug/deps/rust_commons_functions-8e5a2cc140a0b5a5
[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] [stderr]      Running /opt/crater/target/debug/deps/rust_commons_ownership-6238754e36edd775
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_commons_refandborrow-3f12d269557e65cd
[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] [stderr]      Running /opt/crater/target/debug/deps/rust_commons_variables-09da36c1df08933a
[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" "77d270ca5c93c10bf5c76b90f26a5901e872d80a292496a948845ef917870cb3"`
[INFO] running `"docker" "rm" "-f" "77d270ca5c93c10bf5c76b90f26a5901e872d80a292496a948845ef917870cb3"`
[INFO] [stdout] 77d270ca5c93c10bf5c76b90f26a5901e872d80a292496a948845ef917870cb3