[INFO] cloning repository https://github.com/lvaldovinos/vlsm-rust
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flvaldovinos%2Fvlsm-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9bb912fb528e2c4f15f4f41977f8af6cd7c228e3
[INFO] checking lvaldovinos/vlsm-rust against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flvaldovinos%2Fvlsm-rust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lvaldovinos/vlsm-rust on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-4/source/Cargo.toml
[INFO] crate git repo https://github.com/lvaldovinos/vlsm-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 116684d53400a6b3e6734affb9f49e0a028a27a638a128327d5ce4c0fdf4455d
[INFO] running `Command { std: "docker" "start" "-a" "116684d53400a6b3e6734affb9f49e0a028a27a638a128327d5ce4c0fdf4455d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "116684d53400a6b3e6734affb9f49e0a028a27a638a128327d5ce4c0fdf4455d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "116684d53400a6b3e6734affb9f49e0a028a27a638a128327d5ce4c0fdf4455d", kill_on_drop: false }`
[INFO] [stdout] 116684d53400a6b3e6734affb9f49e0a028a27a638a128327d5ce4c0fdf4455d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e46f93e0c9dad507b425644ed7a326b7ea2b173b4f7a999892880f583f75191
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3e46f93e0c9dad507b425644ed7a326b7ea2b173b4f7a999892880f583f75191", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rust-vlsm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `DecimalToBinaryConverter`
[INFO] [stdout]  --> src/byte.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct DecimalToBinaryConverter {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_msb`
[INFO] [stdout]  --> src/byte.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn get_msb (byte: i32) -> u32 {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_usize`
[INFO] [stdout]   --> src/byte.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn from_usize(byte: u8) -> DecimalToBinaryConverter {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_diff`
[INFO] [stdout]   --> src/byte.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn get_diff(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_bits`
[INFO] [stdout]   --> src/byte.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn get_bits(&self) -> [bool; 8] {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `process_bit`
[INFO] [stdout]   --> src/byte.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn process_bit(&mut self, msb_index: u32) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_binary`
[INFO] [stdout]   --> src/byte.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn to_binary(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Byte`
[INFO] [stdout]   --> src/byte.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub struct Byte {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_usize`
[INFO] [stdout]   --> src/byte.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn from_usize(byte: u8) -> Byte {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_bits`
[INFO] [stdout]   --> src/byte.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn get_bits (&self) -> [bool; 8] {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_byte`
[INFO] [stdout]   --> src/byte.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 |     pub fn get_byte (&self) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `MaskV4`
[INFO] [stdout]  --> src/mask.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct MaskV4 {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_bytes_from_mask`
[INFO] [stdout]  --> src/mask.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn get_bytes_from_mask(short_mask: u32) -> [u8; 4] {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_short_mask_from_hosts`
[INFO] [stdout]   --> src/mask.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn get_short_mask_from_hosts(hosts: u32) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_available_hosts`
[INFO] [stdout]   --> src/mask.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn from_available_hosts(hosts: u32) -> MaskV4 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_short_mask`
[INFO] [stdout]   --> src/mask.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn from_short_mask(short_mask: &str) -> MaskV4 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_bytes`
[INFO] [stdout]   --> src/mask.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn get_bytes (&self) -> [u8; 4] {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.73s
[INFO] running `Command { std: "docker" "inspect" "3e46f93e0c9dad507b425644ed7a326b7ea2b173b4f7a999892880f583f75191", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e46f93e0c9dad507b425644ed7a326b7ea2b173b4f7a999892880f583f75191", kill_on_drop: false }`
[INFO] [stdout] 3e46f93e0c9dad507b425644ed7a326b7ea2b173b4f7a999892880f583f75191