[INFO] updating cached repository jalalazimi/rust-zoo
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jalalazimi/rust-zoo
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jalalazimi/rust-zoo" "work/ex/beta-1.38-1/sources/1.37.0/gh/jalalazimi/rust-zoo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jalalazimi/rust-zoo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jalalazimi/rust-zoo" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jalalazimi/rust-zoo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jalalazimi/rust-zoo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7682244343669eb0ff806f87d0294de8ad89270b
[INFO] sha for GitHub repo jalalazimi/rust-zoo: 7682244343669eb0ff806f87d0294de8ad89270b
[INFO] validating manifest of jalalazimi/rust-zoo 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 jalalazimi/rust-zoo 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 jalalazimi/rust-zoo
[INFO] finished frobbing jalalazimi/rust-zoo
[INFO] frobbed toml for jalalazimi/rust-zoo written to work/ex/beta-1.38-1/sources/1.37.0/gh/jalalazimi/rust-zoo/Cargo.toml
[INFO] started frobbing jalalazimi/rust-zoo
[INFO] finished frobbing jalalazimi/rust-zoo
[INFO] frobbed toml for jalalazimi/rust-zoo written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jalalazimi/rust-zoo/Cargo.toml
[INFO] crate jalalazimi/rust-zoo 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 jalalazimi/rust-zoo 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/jalalazimi/rust-zoo:/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] 6c8b3630d8bafd446781916324b3dbf50bc1040fad95ee5aed6b69445b8626c6
[INFO] running `"docker" "start" "-a" "6c8b3630d8bafd446781916324b3dbf50bc1040fad95ee5aed6b69445b8626c6"`
[INFO] [stderr]    Compiling rust-zoo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `is_prime` is never read
[INFO] [stderr]  --> src/primes.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 |         let mut is_prime: bool = true;
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `"docker" "inspect" "6c8b3630d8bafd446781916324b3dbf50bc1040fad95ee5aed6b69445b8626c6"`
[INFO] running `"docker" "rm" "-f" "6c8b3630d8bafd446781916324b3dbf50bc1040fad95ee5aed6b69445b8626c6"`
[INFO] [stdout] 6c8b3630d8bafd446781916324b3dbf50bc1040fad95ee5aed6b69445b8626c6
[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/jalalazimi/rust-zoo:/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] 84c94e2431ae76b9d416e8505569eff8bb31b6267ed1ef21a1d67f3ff586cb12
[INFO] running `"docker" "start" "-a" "84c94e2431ae76b9d416e8505569eff8bb31b6267ed1ef21a1d67f3ff586cb12"`
[INFO] [stderr]    Compiling rust-zoo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `is_prime` is never read
[INFO] [stderr]  --> src/primes.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 |         let mut is_prime: bool = true;
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `"docker" "inspect" "84c94e2431ae76b9d416e8505569eff8bb31b6267ed1ef21a1d67f3ff586cb12"`
[INFO] running `"docker" "rm" "-f" "84c94e2431ae76b9d416e8505569eff8bb31b6267ed1ef21a1d67f3ff586cb12"`
[INFO] [stdout] 84c94e2431ae76b9d416e8505569eff8bb31b6267ed1ef21a1d67f3ff586cb12
[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/jalalazimi/rust-zoo:/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] 03a91dcfdd77a0a804b8c6bd8f5c2d177c1120cf105f0f7e224780bce2753f6c
[INFO] running `"docker" "start" "-a" "03a91dcfdd77a0a804b8c6bd8f5c2d177c1120cf105f0f7e224780bce2753f6c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_zoo-8630ee8306e6f843
[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" "03a91dcfdd77a0a804b8c6bd8f5c2d177c1120cf105f0f7e224780bce2753f6c"`
[INFO] running `"docker" "rm" "-f" "03a91dcfdd77a0a804b8c6bd8f5c2d177c1120cf105f0f7e224780bce2753f6c"`
[INFO] [stdout] 03a91dcfdd77a0a804b8c6bd8f5c2d177c1120cf105f0f7e224780bce2753f6c