[INFO] cloning repository natir/mapping2barcode
[INFO] running `"git" "clone" "--bare" "git://github.com/natir/mapping2barcode.git" "work/cache/sources/gh/natir/mapping2barcode"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/natir/mapping2barcode'...
[INFO] running `"git" "clone" "work/cache/sources/gh/natir/mapping2barcode" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/natir/mapping2barcode"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/natir/mapping2barcode'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/natir/mapping2barcode" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/natir/mapping2barcode"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/natir/mapping2barcode'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b3f5968927e2e5ecd3dad1fbb1e112b602e96975
[INFO] sha for GitHub repo natir/mapping2barcode: b3f5968927e2e5ecd3dad1fbb1e112b602e96975
[INFO] validating manifest of natir/mapping2barcode on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of natir/mapping2barcode on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing natir/mapping2barcode
[INFO] finished frobbing natir/mapping2barcode
[INFO] frobbed toml for natir/mapping2barcode written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/natir/mapping2barcode/Cargo.toml
[INFO] started frobbing natir/mapping2barcode
[INFO] finished frobbing natir/mapping2barcode
[INFO] frobbed toml for natir/mapping2barcode written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/natir/mapping2barcode/Cargo.toml
[INFO] crate natir/mapping2barcode has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lzma-sys v0.1.11
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking natir/mapping2barcode against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-7/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/natir/mapping2barcode:/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=forbid" "-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" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b8445e27222529f526a9db8d2ef8e958771045a9497e11a04d77f9d21d92b8a9
[INFO] running `"docker" "start" "-a" "b8445e27222529f526a9db8d2ef8e958771045a9497e11a04d77f9d21d92b8a9"`
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling bv v0.7.4
[INFO] [stderr]    Compiling ndarray v0.9.1
[INFO] [stderr]     Checking bytecount v0.3.2
[INFO] [stderr]    Compiling lzma-sys v0.1.11
[INFO] [stderr]     Checking itertools v0.6.5
[INFO] [stderr]     Checking itertools-num v0.1.2
[INFO] [stderr]    Compiling syn v0.15.14
[INFO] [stderr]     Checking csv-core v0.1.4
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking xz2 v0.1.6
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking csv v1.0.2
[INFO] [stderr]     Checking multimap v0.4.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking bio v0.20.3
[INFO] [stderr]     Checking mapping2barcodegraph v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `petgraph::visit::IntoNodeReferences`
[INFO] [stderr]  --> src/premolecule.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use petgraph::visit::IntoNodeReferences;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `petgraph::visit::IntoNodeReferences`
[INFO] [stderr]  --> src/premolecule.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use petgraph::visit::IntoNodeReferences;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/premolecule.rs:57:17
[INFO] [stderr]    |
[INFO] [stderr] 57 |         let mut n = 0;
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/premolecule.rs:57:17
[INFO] [stderr]    |
[INFO] [stderr] 57 |         let mut n = 0;
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.95s
[INFO] running `"docker" "inspect" "b8445e27222529f526a9db8d2ef8e958771045a9497e11a04d77f9d21d92b8a9"`
[INFO] running `"docker" "rm" "-f" "b8445e27222529f526a9db8d2ef8e958771045a9497e11a04d77f9d21d92b8a9"`
[INFO] [stdout] b8445e27222529f526a9db8d2ef8e958771045a9497e11a04d77f9d21d92b8a9