[INFO] updating cached repository lvaldovinos/vlsm-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/lvaldovinos/vlsm-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/lvaldovinos/vlsm-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/lvaldovinos/vlsm-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/lvaldovinos/vlsm-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lvaldovinos/vlsm-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lvaldovinos/vlsm-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lvaldovinos/vlsm-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9bb912fb528e2c4f15f4f41977f8af6cd7c228e3
[INFO] sha for GitHub repo lvaldovinos/vlsm-rust: 9bb912fb528e2c4f15f4f41977f8af6cd7c228e3
[INFO] validating manifest of lvaldovinos/vlsm-rust 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 lvaldovinos/vlsm-rust 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 lvaldovinos/vlsm-rust
[INFO] finished frobbing lvaldovinos/vlsm-rust
[INFO] frobbed toml for lvaldovinos/vlsm-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/lvaldovinos/vlsm-rust/Cargo.toml
[INFO] started frobbing lvaldovinos/vlsm-rust
[INFO] finished frobbing lvaldovinos/vlsm-rust
[INFO] frobbed toml for lvaldovinos/vlsm-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/lvaldovinos/vlsm-rust/Cargo.toml
[INFO] crate lvaldovinos/vlsm-rust 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 lvaldovinos/vlsm-rust 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lvaldovinos/vlsm-rust:/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] 7f1dfd2d381240895859cebb091348dcd90dc6f34c064e6d88fc8ce327f2be1a
[INFO] running `"docker" "start" "-a" "7f1dfd2d381240895859cebb091348dcd90dc6f34c064e6d88fc8ce327f2be1a"`
[INFO] [stderr]    Compiling rust-vlsm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `DecimalToBinaryConverter`
[INFO] [stderr]  --> src/byte.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct DecimalToBinaryConverter {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_msb`
[INFO] [stderr]  --> src/byte.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn get_msb (byte: i32) -> u32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_usize`
[INFO] [stderr]   --> src/byte.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn from_usize(byte: u8) -> DecimalToBinaryConverter {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_diff`
[INFO] [stderr]   --> src/byte.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn get_diff(&self) -> i32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_bits`
[INFO] [stderr]   --> src/byte.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn get_bits(&self) -> [bool; 8] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `process_bit`
[INFO] [stderr]   --> src/byte.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn process_bit(&mut self, msb_index: u32) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_binary`
[INFO] [stderr]   --> src/byte.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn to_binary(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Byte`
[INFO] [stderr]   --> src/byte.rs:60:1
[INFO] [stderr]    |
[INFO] [stderr] 60 | pub struct Byte {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_usize`
[INFO] [stderr]   --> src/byte.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn from_usize(byte: u8) -> Byte {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_bits`
[INFO] [stderr]   --> src/byte.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn get_bits (&self) -> [bool; 8] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_byte`
[INFO] [stderr]   --> src/byte.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 80 |     pub fn get_byte (&self) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MaskV4`
[INFO] [stderr]  --> src/mask.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct MaskV4 {
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_bytes_from_mask`
[INFO] [stderr]  --> src/mask.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn get_bytes_from_mask(short_mask: u32) -> [u8; 4] {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_short_mask_from_hosts`
[INFO] [stderr]   --> src/mask.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | fn get_short_mask_from_hosts(hosts: u32) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_available_hosts`
[INFO] [stderr]   --> src/mask.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     fn from_available_hosts(hosts: u32) -> MaskV4 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_short_mask`
[INFO] [stderr]   --> src/mask.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn from_short_mask(short_mask: &str) -> MaskV4 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_bytes`
[INFO] [stderr]   --> src/mask.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     fn get_bytes (&self) -> [u8; 4] {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "7f1dfd2d381240895859cebb091348dcd90dc6f34c064e6d88fc8ce327f2be1a"`
[INFO] running `"docker" "rm" "-f" "7f1dfd2d381240895859cebb091348dcd90dc6f34c064e6d88fc8ce327f2be1a"`
[INFO] [stdout] 7f1dfd2d381240895859cebb091348dcd90dc6f34c064e6d88fc8ce327f2be1a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lvaldovinos/vlsm-rust:/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] d6bbcd4211ccc75b972392f8f281ea292f06e0886359d2b985211189132c80b2
[INFO] running `"docker" "start" "-a" "d6bbcd4211ccc75b972392f8f281ea292f06e0886359d2b985211189132c80b2"`
[INFO] [stderr]    Compiling rust-vlsm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "d6bbcd4211ccc75b972392f8f281ea292f06e0886359d2b985211189132c80b2"`
[INFO] running `"docker" "rm" "-f" "d6bbcd4211ccc75b972392f8f281ea292f06e0886359d2b985211189132c80b2"`
[INFO] [stdout] d6bbcd4211ccc75b972392f8f281ea292f06e0886359d2b985211189132c80b2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/lvaldovinos/vlsm-rust:/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] 7752bc755ef340d1328ad7513009f77666c253addd6a24c533775969538001f6
[INFO] running `"docker" "start" "-a" "7752bc755ef340d1328ad7513009f77666c253addd6a24c533775969538001f6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_vlsm-0ddf8393a78a4513
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test mask::tests::test_from_short_mask ... ok
[INFO] [stdout] test byte::tests::test_from_usize ... ok
[INFO] [stdout] test mask::tests::test_from_available_hosts ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "7752bc755ef340d1328ad7513009f77666c253addd6a24c533775969538001f6"`
[INFO] running `"docker" "rm" "-f" "7752bc755ef340d1328ad7513009f77666c253addd6a24c533775969538001f6"`
[INFO] [stdout] 7752bc755ef340d1328ad7513009f77666c253addd6a24c533775969538001f6