[INFO] updating cached repository IminatoPo/Beginner
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/IminatoPo/Beginner
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/IminatoPo/Beginner" "work/ex/beta-1.38-1/sources/1.37.0/gh/IminatoPo/Beginner"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/IminatoPo/Beginner'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/IminatoPo/Beginner" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/IminatoPo/Beginner"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/IminatoPo/Beginner'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 39d7806d952dc00f0fe7ca3fae94e3e5e914dce9
[INFO] sha for GitHub repo IminatoPo/Beginner: 39d7806d952dc00f0fe7ca3fae94e3e5e914dce9
[INFO] validating manifest of IminatoPo/Beginner 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 IminatoPo/Beginner 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 IminatoPo/Beginner
[INFO] finished frobbing IminatoPo/Beginner
[INFO] frobbed toml for IminatoPo/Beginner written to work/ex/beta-1.38-1/sources/1.37.0/gh/IminatoPo/Beginner/Cargo.toml
[INFO] started frobbing IminatoPo/Beginner
[INFO] finished frobbing IminatoPo/Beginner
[INFO] frobbed toml for IminatoPo/Beginner written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/IminatoPo/Beginner/Cargo.toml
[INFO] crate IminatoPo/Beginner 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing IminatoPo/Beginner 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/IminatoPo/Beginner:/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] b4d21286f68b3ad67401fe49e605eafa1ab29163460508b57ce26e67bd31ec9a
[INFO] running `"docker" "start" "-a" "b4d21286f68b3ad67401fe49e605eafa1ab29163460508b57ce26e67bd31ec9a"`
[INFO] [stderr]    Compiling Hello_Rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:2:6
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let mut rust = "Rust";
[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: crate `Hello_Rust` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `hello_rust`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `"docker" "inspect" "b4d21286f68b3ad67401fe49e605eafa1ab29163460508b57ce26e67bd31ec9a"`
[INFO] running `"docker" "rm" "-f" "b4d21286f68b3ad67401fe49e605eafa1ab29163460508b57ce26e67bd31ec9a"`
[INFO] [stdout] b4d21286f68b3ad67401fe49e605eafa1ab29163460508b57ce26e67bd31ec9a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/IminatoPo/Beginner:/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] fed9b9d856781af9225f681268c9ba4569d3004da7fe1ba514a72a30c7858f2a
[INFO] running `"docker" "start" "-a" "fed9b9d856781af9225f681268c9ba4569d3004da7fe1ba514a72a30c7858f2a"`
[INFO] [stderr]    Compiling Hello_Rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:2:6
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let mut rust = "Rust";
[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: crate `Hello_Rust` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `hello_rust`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `"docker" "inspect" "fed9b9d856781af9225f681268c9ba4569d3004da7fe1ba514a72a30c7858f2a"`
[INFO] running `"docker" "rm" "-f" "fed9b9d856781af9225f681268c9ba4569d3004da7fe1ba514a72a30c7858f2a"`
[INFO] [stdout] fed9b9d856781af9225f681268c9ba4569d3004da7fe1ba514a72a30c7858f2a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/IminatoPo/Beginner:/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] 2b34554924f0fa4c203a9db486cf874b4f9080ce6a6c75f8900106e9b898e5ae
[INFO] running `"docker" "start" "-a" "2b34554924f0fa4c203a9db486cf874b4f9080ce6a6c75f8900106e9b898e5ae"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/Hello_Rust-02e0a56602093338
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "2b34554924f0fa4c203a9db486cf874b4f9080ce6a6c75f8900106e9b898e5ae"`
[INFO] running `"docker" "rm" "-f" "2b34554924f0fa4c203a9db486cf874b4f9080ce6a6c75f8900106e9b898e5ae"`
[INFO] [stdout] 2b34554924f0fa4c203a9db486cf874b4f9080ce6a6c75f8900106e9b898e5ae