[INFO] cloning repository https://github.com/procedural-rust/EverettsHillCipher
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/procedural-rust/EverettsHillCipher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprocedural-rust%2FEverettsHillCipher", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprocedural-rust%2FEverettsHillCipher'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b05f38ff966771b4214ee79b3510ce307b1a98e3
[INFO] testing procedural-rust/EverettsHillCipher against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprocedural-rust%2FEverettsHillCipher" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/procedural-rust/EverettsHillCipher on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/procedural-rust/EverettsHillCipher
[INFO] finished tweaking git repo https://github.com/procedural-rust/EverettsHillCipher
[INFO] tweaked toml for git repo https://github.com/procedural-rust/EverettsHillCipher written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/procedural-rust/EverettsHillCipher already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 52db834e1e85586f383871a3044ff7b3df499de0d1301fee0330153202fd2a65
[INFO] running `Command { std: "docker" "start" "-a" "52db834e1e85586f383871a3044ff7b3df499de0d1301fee0330153202fd2a65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52db834e1e85586f383871a3044ff7b3df499de0d1301fee0330153202fd2a65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52db834e1e85586f383871a3044ff7b3df499de0d1301fee0330153202fd2a65", kill_on_drop: false }`
[INFO] [stdout] 52db834e1e85586f383871a3044ff7b3df499de0d1301fee0330153202fd2a65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", 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] 9cc05835080dbeee6f1e90803e8ca21c59c0bb4290d1c2c8c1863dc026640795
[INFO] running `Command { std: "docker" "start" "-a" "9cc05835080dbeee6f1e90803e8ca21c59c0bb4290d1c2c8c1863dc026640795", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `GCD` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:263:8
[INFO] [stdout]     |
[INFO] [stdout] 263 | pub fn GCD(x: u32, y: u32) -> u32{
[INFO] [stdout]     |        ^^^ help: convert the identifier to snake case: `gcd`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufRead`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io::BufRead;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         i => i-30,
[INFO] [stdout]    |         - matches any value
[INFO] [stdout] 26 |         _ => 1000,
[INFO] [stdout]    |         ^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         i => (i+30) as u8,
[INFO] [stdout]    |         - matches any value
[INFO] [stdout] 35 |         _ => 0 as u8,
[INFO] [stdout]    |         ^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `file_to_encrypt` is never read
[INFO] [stdout]   --> src/main.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut file_to_encrypt = String::new();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `matrix_size` is never read
[INFO] [stdout]   --> src/main.rs:52:10
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let mut matrix_size: u32 = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `current_chars` is never read
[INFO] [stdout]    --> src/main.rs:128:3
[INFO] [stdout]     |
[INFO] [stdout] 128 |         current_chars = 0;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `byte_to_num`
[INFO] [stdout]   --> src/main.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn byte_to_num(byte: u8) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `num_to_byte`
[INFO] [stdout]   --> src/main.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn num_to_byte(num: u32) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.98s
[INFO] running `Command { std: "docker" "inspect" "9cc05835080dbeee6f1e90803e8ca21c59c0bb4290d1c2c8c1863dc026640795", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cc05835080dbeee6f1e90803e8ca21c59c0bb4290d1c2c8c1863dc026640795", kill_on_drop: false }`
[INFO] [stdout] 9cc05835080dbeee6f1e90803e8ca21c59c0bb4290d1c2c8c1863dc026640795
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", 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] ab04bf068f24e9714590d4a41b0d4b7c3c642a49bb02f606f9eb8e85a0e980d2
[INFO] running `Command { std: "docker" "start" "-a" "ab04bf068f24e9714590d4a41b0d4b7c3c642a49bb02f606f9eb8e85a0e980d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `GCD` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:263:8
[INFO] [stdout]     |
[INFO] [stdout] 263 | pub fn GCD(x: u32, y: u32) -> u32{
[INFO] [stdout]     |        ^^^ help: convert the identifier to snake case: `gcd`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `GCD` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:263:8
[INFO] [stdout]     |
[INFO] [stdout] 263 | pub fn GCD(x: u32, y: u32) -> u32{
[INFO] [stdout]     |        ^^^ help: convert the identifier to snake case: `gcd`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufRead`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::io::BufRead;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/main.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         i => i-30,
[INFO] [stdout]    |         - matches any value
[INFO] [stdout] 26 |         _ => 1000,
[INFO] [stdout]    |         ^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/main.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         i => (i+30) as u8,
[INFO] [stdout]    |         - matches any value
[INFO] [stdout] 35 |         _ => 0 as u8,
[INFO] [stdout]    |         ^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `file_to_encrypt` is never read
[INFO] [stdout]   --> src/main.rs:50:10
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let mut file_to_encrypt = String::new();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `matrix_size` is never read
[INFO] [stdout]   --> src/main.rs:52:10
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let mut matrix_size: u32 = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `current_chars` is never read
[INFO] [stdout]    --> src/main.rs:128:3
[INFO] [stdout]     |
[INFO] [stdout] 128 |         current_chars = 0;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `byte_to_num`
[INFO] [stdout]   --> src/main.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn byte_to_num(byte: u8) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `num_to_byte`
[INFO] [stdout]   --> src/main.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn num_to_byte(num: u32) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.46s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/matrix-b4b782ab763729cd)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/matrix-fb230f12b36afe96)
[INFO] running `Command { std: "docker" "inspect" "ab04bf068f24e9714590d4a41b0d4b7c3c642a49bb02f606f9eb8e85a0e980d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab04bf068f24e9714590d4a41b0d4b7c3c642a49bb02f606f9eb8e85a0e980d2", kill_on_drop: false }`
[INFO] [stdout] ab04bf068f24e9714590d4a41b0d4b7c3c642a49bb02f606f9eb8e85a0e980d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", 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] 01760a6c27f6e5891fe90a7743cf3ab7213952562fd1c0f64b4dcf66b1239233
[INFO] running `Command { std: "docker" "start" "-a" "01760a6c27f6e5891fe90a7743cf3ab7213952562fd1c0f64b4dcf66b1239233", kill_on_drop: false }`
[INFO] [stderr] warning: function `GCD` should have a snake case name
[INFO] [stderr]    --> src/lib.rs:263:8
[INFO] [stderr]     |
[INFO] [stderr] 263 | pub fn GCD(x: u32, y: u32) -> u32{
[INFO] [stderr]     |        ^^^ help: convert the identifier to snake case: `gcd`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `matrix` (lib) generated 1 warning
[INFO] [stderr] warning: `matrix` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: unused import: `std::io::BufRead`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io::BufRead;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/main.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |         i => i-30,
[INFO] [stderr]    |         - matches any value
[INFO] [stderr] 26 |         _ => 1000,
[INFO] [stderr]    |         ^ unreachable pattern
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/main.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         i => (i+30) as u8,
[INFO] [stderr]    |         - matches any value
[INFO] [stderr] 35 |         _ => 0 as u8,
[INFO] [stderr]    |         ^ unreachable pattern
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `file_to_encrypt` is never read
[INFO] [stderr]   --> src/main.rs:50:10
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let mut file_to_encrypt = String::new();
[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] warning: value assigned to `matrix_size` is never read
[INFO] [stderr]   --> src/main.rs:52:10
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let mut matrix_size: u32 = 0;
[INFO] [stderr]    |             ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `current_chars` is never read
[INFO] [stderr]    --> src/main.rs:128:3
[INFO] [stderr]     |
[INFO] [stderr] 128 |         current_chars = 0;
[INFO] [stderr]     |         ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `byte_to_num`
[INFO] [stderr]   --> src/main.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn byte_to_num(byte: u8) -> u32 {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `num_to_byte`
[INFO] [stderr]   --> src/main.rs:30:4
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn num_to_byte(num: u32) -> u8 {
[INFO] [stderr]    |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `matrix` (bin "matrix" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/matrix-b4b782ab763729cd)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/matrix-fb230f12b36afe96)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests matrix
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "01760a6c27f6e5891fe90a7743cf3ab7213952562fd1c0f64b4dcf66b1239233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01760a6c27f6e5891fe90a7743cf3ab7213952562fd1c0f64b4dcf66b1239233", kill_on_drop: false }`
[INFO] [stdout] 01760a6c27f6e5891fe90a7743cf3ab7213952562fd1c0f64b4dcf66b1239233