[INFO] cloning repository https://github.com/lvaldovinos/vlsm-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lvaldovinos/vlsm-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flvaldovinos%2Fvlsm-rust"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flvaldovinos%2Fvlsm-rust'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9bb912fb528e2c4f15f4f41977f8af6cd7c228e3
[INFO] checking lvaldovinos/vlsm-rust against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flvaldovinos%2Fvlsm-rust" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lvaldovinos/vlsm-rust on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/lvaldovinos/vlsm-rust
[INFO] finished tweaking git repo https://github.com/lvaldovinos/vlsm-rust
[INFO] tweaked toml for git repo https://github.com/lvaldovinos/vlsm-rust written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/lvaldovinos/vlsm-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f4ee1d83b733f0d9afab26e1dd0d1b0065aae5efd0c32a4e485bf39d6a280f49
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "f4ee1d83b733f0d9afab26e1dd0d1b0065aae5efd0c32a4e485bf39d6a280f49"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rust-vlsm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: struct is never constructed: `DecimalToBinaryConverter`
[INFO] [stderr]  --> src/byte.rs:1:8
[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:8:4
[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:60:12
[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:3:8
[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:7:4
[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:19:4
[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] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `"docker" "inspect" "f4ee1d83b733f0d9afab26e1dd0d1b0065aae5efd0c32a4e485bf39d6a280f49"`
[INFO] running `"docker" "rm" "-f" "f4ee1d83b733f0d9afab26e1dd0d1b0065aae5efd0c32a4e485bf39d6a280f49"`
[INFO] [stdout] f4ee1d83b733f0d9afab26e1dd0d1b0065aae5efd0c32a4e485bf39d6a280f49