[INFO] updating cached repository DenialAdams/steganography
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/DenialAdams/steganography
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/DenialAdams/steganography" "work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/DenialAdams/steganography"`
[INFO] [stderr] Cloning into 'work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/DenialAdams/steganography'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/DenialAdams/steganography" "work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/DenialAdams/steganography"`
[INFO] [stderr] Cloning into 'work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/DenialAdams/steganography'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 74a86822d6568f5efa9712e5eff8b0a3dc5505f0
[INFO] sha for GitHub repo DenialAdams/steganography: 74a86822d6568f5efa9712e5eff8b0a3dc5505f0
[INFO] validating manifest of DenialAdams/steganography on toolchain master#d99a320cba42f661aebfa1293b7b2ec3603dda75
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of DenialAdams/steganography on toolchain try#e70472fc501b855c9080f3772432c10fe20b8866
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing DenialAdams/steganography
[INFO] finished frobbing DenialAdams/steganography
[INFO] frobbed toml for DenialAdams/steganography written to work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/DenialAdams/steganography/Cargo.toml
[INFO] started frobbing DenialAdams/steganography
[INFO] finished frobbing DenialAdams/steganography
[INFO] frobbed toml for DenialAdams/steganography written to work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/DenialAdams/steganography/Cargo.toml
[INFO] crate DenialAdams/steganography has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking DenialAdams/steganography against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/DenialAdams/steganography:/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=forbid" "-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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c9c869d9d154daf251111bb323fdb59a4c8cbc2bf3aaf1e7f21c49693c5862ad
[INFO] running `"docker" "start" "-a" "c9c869d9d154daf251111bb323fdb59a4c8cbc2bf3aaf1e7f21c49693c5862ad"`
[INFO] [stderr]     Checking steganography v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `vigenere_encrypt`
[INFO] [stderr]  --> src/crypto.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn vigenere_encrypt(input: &[u8], key: &[u8]) -> Result<Vec<u8>, &'static str> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `vigenere_decrypt`
[INFO] [stderr]   --> src/crypto.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn vigenere_decrypt(input: &[u8], key: &[u8]) -> Result<Vec<u8>, &'static str> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `caesar_encrypt`
[INFO] [stderr]   --> src/crypto.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn caesar_encrypt(input: &[u8], offset: u8) -> Result<Vec<u8>, &'static str> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `caesar_decrypt`
[INFO] [stderr]   --> src/crypto.rs:40:1
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub fn caesar_decrypt(input: &[u8], offset: u8) -> Result<Vec<u8>, &'static str> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `modulo`
[INFO] [stderr]   --> src/crypto.rs:52:1
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn modulo(base: i8, other: u8) -> u8 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `alpha_to_twosix`
[INFO] [stderr]  --> src/util.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn alpha_to_twosix(input: u8) -> Result<u8, &'static str> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `twosix_to_alpha`
[INFO] [stderr]   --> src/util.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn twosix_to_alpha(input: u8) -> Result<u8, &'static str> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_parity_chart`
[INFO] [stderr]   --> src/main.rs:95:1
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn create_parity_chart(filename_in: &str, filename_out: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_odd_parity`
[INFO] [stderr]    --> src/main.rs:115:1
[INFO] [stderr]     |
[INFO] [stderr] 115 | fn is_odd_parity(mut v: u32) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_parity_message`
[INFO] [stderr]    --> src/main.rs:126:1
[INFO] [stderr]     |
[INFO] [stderr] 126 | fn read_parity_message(filename: &str) -> Result<Vec<u8>, &'static str> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `write_parity_message`
[INFO] [stderr]    --> src/main.rs:148:1
[INFO] [stderr]     |
[INFO] [stderr] 148 | fn write_parity_message(message: &[u8]) -> Result<(), &'static str> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `write_end_of_image_comment`
[INFO] [stderr]    --> src/main.rs:208:1
[INFO] [stderr]     |
[INFO] [stderr] 208 | fn write_end_of_image_comment(message: &[u8]) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `create_parity_chart`
[INFO] [stderr]   --> src/main.rs:95:1
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn create_parity_chart(filename_in: &str, filename_out: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_odd_parity`
[INFO] [stderr]    --> src/main.rs:115:1
[INFO] [stderr]     |
[INFO] [stderr] 115 | fn is_odd_parity(mut v: u32) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_parity_message`
[INFO] [stderr]    --> src/main.rs:126:1
[INFO] [stderr]     |
[INFO] [stderr] 126 | fn read_parity_message(filename: &str) -> Result<Vec<u8>, &'static str> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `write_parity_message`
[INFO] [stderr]    --> src/main.rs:148:1
[INFO] [stderr]     |
[INFO] [stderr] 148 | fn write_parity_message(message: &[u8]) -> Result<(), &'static str> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `write_end_of_image_comment`
[INFO] [stderr]    --> src/main.rs:208:1
[INFO] [stderr]     |
[INFO] [stderr] 208 | fn write_end_of_image_comment(message: &[u8]) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.46s
[INFO] running `"docker" "inspect" "c9c869d9d154daf251111bb323fdb59a4c8cbc2bf3aaf1e7f21c49693c5862ad"`
[INFO] running `"docker" "rm" "-f" "c9c869d9d154daf251111bb323fdb59a4c8cbc2bf3aaf1e7f21c49693c5862ad"`
[INFO] [stdout] c9c869d9d154daf251111bb323fdb59a4c8cbc2bf3aaf1e7f21c49693c5862ad