[INFO] crate tag-helper 0.3.1 is already in cache
[INFO] extracting crate tag-helper 0.3.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/tag-helper/0.3.1
[INFO] extracting crate tag-helper 0.3.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/tag-helper/0.3.1
[INFO] validating manifest of tag-helper-0.3.1 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 tag-helper-0.3.1 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 tag-helper-0.3.1
[INFO] finished frobbing tag-helper-0.3.1
[INFO] frobbed toml for tag-helper-0.3.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/tag-helper/0.3.1/Cargo.toml
[INFO] started frobbing tag-helper-0.3.1
[INFO] finished frobbing tag-helper-0.3.1
[INFO] frobbed toml for tag-helper-0.3.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/tag-helper/0.3.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 tag-helper-0.3.1 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-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/tag-helper/0.3.1:/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] 2d395d9847f58b7600571cb568484dd650cd107982ed2e007110a22bda48a4a3
[INFO] running `"docker" "start" "-a" "2d395d9847f58b7600571cb568484dd650cd107982ed2e007110a22bda48a4a3"`
[INFO] [stderr]    Compiling libgit2-sys v0.7.11
[INFO] [stderr]    Compiling git2 v0.7.5
[INFO] [stderr]    Compiling tag-helper v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
[INFO] [stderr]   --> src/main.rs:22:31
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 let tag = tag.trim_left_matches('v');
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_start_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.72s
[INFO] running `"docker" "inspect" "2d395d9847f58b7600571cb568484dd650cd107982ed2e007110a22bda48a4a3"`
[INFO] running `"docker" "rm" "-f" "2d395d9847f58b7600571cb568484dd650cd107982ed2e007110a22bda48a4a3"`
[INFO] [stdout] 2d395d9847f58b7600571cb568484dd650cd107982ed2e007110a22bda48a4a3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/tag-helper/0.3.1:/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] 4e91f7fbfc72659b6615b887183aa5bae32af5d12673c008a6cbe20b743cf8dc
[INFO] running `"docker" "start" "-a" "4e91f7fbfc72659b6615b887183aa5bae32af5d12673c008a6cbe20b743cf8dc"`
[INFO] [stderr]    Compiling tag-helper v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
[INFO] [stderr]   --> src/main.rs:22:31
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 let tag = tag.trim_left_matches('v');
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_start_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "4e91f7fbfc72659b6615b887183aa5bae32af5d12673c008a6cbe20b743cf8dc"`
[INFO] running `"docker" "rm" "-f" "4e91f7fbfc72659b6615b887183aa5bae32af5d12673c008a6cbe20b743cf8dc"`
[INFO] [stdout] 4e91f7fbfc72659b6615b887183aa5bae32af5d12673c008a6cbe20b743cf8dc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/tag-helper/0.3.1:/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] 1b4e516c63ad992422398e961bdccc246b6d5f2d5a907f30df993a4ea999295c
[INFO] running `"docker" "start" "-a" "1b4e516c63ad992422398e961bdccc246b6d5f2d5a907f30df993a4ea999295c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tag_helper-c87a51fae7fe3406
[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" "1b4e516c63ad992422398e961bdccc246b6d5f2d5a907f30df993a4ea999295c"`
[INFO] running `"docker" "rm" "-f" "1b4e516c63ad992422398e961bdccc246b6d5f2d5a907f30df993a4ea999295c"`
[INFO] [stdout] 1b4e516c63ad992422398e961bdccc246b6d5f2d5a907f30df993a4ea999295c