[INFO] cloning repository https://github.com/nategalang/Message-Obfuscator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nategalang/Message-Obfuscator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnategalang%2FMessage-Obfuscator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnategalang%2FMessage-Obfuscator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3d797b6776f40c8f96058c0f89108e465207be4f
[INFO] checking nategalang/Message-Obfuscator against try#c4ca24658d934444a28db36abebef17a8651701a for pr-144156
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnategalang%2FMessage-Obfuscator" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nategalang/Message-Obfuscator
[INFO] finished tweaking git repo https://github.com/nategalang/Message-Obfuscator
[INFO] tweaked toml for git repo https://github.com/nategalang/Message-Obfuscator written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nategalang/Message-Obfuscator on toolchain c4ca24658d934444a28db36abebef17a8651701a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c4ca24658d934444a28db36abebef17a8651701a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nategalang/Message-Obfuscator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c4ca24658d934444a28db36abebef17a8651701a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking nategalang/Message-Obfuscator against try#c4ca24658d934444a28db36abebef17a8651701a for pr-144156
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnategalang%2FMessage-Obfuscator" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nategalang/Message-Obfuscator
[INFO] finished tweaking git repo https://github.com/nategalang/Message-Obfuscator
[INFO] tweaked toml for git repo https://github.com/nategalang/Message-Obfuscator written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nategalang/Message-Obfuscator on toolchain c4ca24658d934444a28db36abebef17a8651701a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c4ca24658d934444a28db36abebef17a8651701a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nategalang/Message-Obfuscator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c4ca24658d934444a28db36abebef17a8651701a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded base85 v1.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+c4ca24658d934444a28db36abebef17a8651701a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8c2934d73b2757860db6d4455a9567250faa7eced002a6be12a1e0f52befdf2
[INFO] running `Command { std: "docker" "start" "-a" "e8c2934d73b2757860db6d4455a9567250faa7eced002a6be12a1e0f52befdf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8c2934d73b2757860db6d4455a9567250faa7eced002a6be12a1e0f52befdf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8c2934d73b2757860db6d4455a9567250faa7eced002a6be12a1e0f52befdf2", kill_on_drop: false }`
[INFO] [stdout] e8c2934d73b2757860db6d4455a9567250faa7eced002a6be12a1e0f52befdf2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+c4ca24658d934444a28db36abebef17a8651701a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5218e3f1a5ad0bb96ed5848241d8d07a65bfbb6898ab81d0d9848c9029a7e11b
[INFO] running `Command { std: "docker" "start" "-a" "5218e3f1a5ad0bb96ed5848241d8d07a65bfbb6898ab81d0d9848c9029a7e11b", kill_on_drop: false }`
[INFO] [stderr]     Checking base85 v1.1.1
[INFO] [stderr]     Checking Midterm_Problem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/dpql/zip.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let mut msg_bwt_idx_u8: Vec<u8> = msg_bwt_idx_u64.to_be_bytes().to_vec();
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write` is never used
[INFO] [stdout]  --> src/dpql.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn write(text: &String) -> String {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read` is never used
[INFO] [stdout]   --> src/dpql.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn read(prog: &String) -> String {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write` is never used
[INFO] [stdout]   --> src/dpql/zip.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn write(text: &String) -> String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read` is never used
[INFO] [stdout]   --> src/dpql/zip.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn read(prog: &String) -> String {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `write_meta` is never used
[INFO] [stdout]   --> src/dpql/zip.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn write_meta(meta: &DpqlzMeta, prog: &Vec<u8>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_meta` is never used
[INFO] [stdout]    --> src/dpql/zip.rs:144:8
[INFO] [stdout]     |
[INFO] [stdout] 144 | pub fn read_meta(prog: &String) -> (DpqlzMeta, Vec<u8>) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DpqlzMeta` is never constructed
[INFO] [stdout]    --> src/dpql/zip.rs:246:12
[INFO] [stdout]     |
[INFO] [stdout] 246 | pub struct DpqlzMeta {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search` is never used
[INFO] [stdout]  --> src/compressor/mtf.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn search(alphabet: &String, c: char) -> usize {
[INFO] [stdout]   |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode` is never used
[INFO] [stdout]  --> src/compressor/mtf.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn encode(text: &String, alphabet: &String) -> Vec<u8> {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode` is never used
[INFO] [stdout]   --> src/compressor/mtf.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn decode(data: &Vec<u8>, alphabet: &String) -> String {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_msb` is never used
[INFO] [stdout]  --> src/compressor/rle.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn get_msb(n: i128) -> i128 {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode` is never used
[INFO] [stdout]   --> src/compressor/rle.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn encode(text: &Vec<u8>) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bits_to_n` is never used
[INFO] [stdout]   --> src/compressor/rle.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn bits_to_n(bit_stack: &Vec<u8>) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode` is never used
[INFO] [stdout]   --> src/compressor/rle.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn decode(data: &Vec<u8>) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_frequency_arr` is never used
[INFO] [stdout]  --> src/compressor/huffman.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn get_frequency_arr(text: &Vec<u8>) -> Vec<(u8, i32)> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `HNodeType` is never used
[INFO] [stdout]   --> src/compressor/huffman.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | enum HNodeType {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HNode` is never constructed
[INFO] [stdout]   --> src/compressor/huffman.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | struct HNode {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_htree` is never used
[INFO] [stdout]   --> src/compressor/huffman.rs:77:4
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn build_htree(frequency_arr: &Vec<(u8, i32)>) -> HNode {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_codebook` is never used
[INFO] [stdout]    --> src/compressor/huffman.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn build_codebook (htree_node: &HNode, codeword_stack: String, codeword_map: &mut HashMap<u8, String>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_encoded_bits` is never used
[INFO] [stdout]    --> src/compressor/huffman.rs:151:4
[INFO] [stdout]     |
[INFO] [stdout] 151 | fn get_encoded_bits(codeword_map: &HashMap<u8, String>, message: &Vec<u8>) -> Vec<u8> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_bit_str` is never used
[INFO] [stdout]    --> src/compressor/huffman.rs:168:4
[INFO] [stdout]     |
[INFO] [stdout] 168 | fn get_bit_str(n: i128, l: u8) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_canon_freqs` is never used
[INFO] [stdout]    --> src/compressor/huffman.rs:185:4
[INFO] [stdout]     |
[INFO] [stdout] 185 | fn get_canon_freqs(cm: &HashMap<u8, String>) -> Vec<u8> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reconstruct_canon_cb` is never used
[INFO] [stdout]    --> src/compressor/huffman.rs:208:4
[INFO] [stdout]     |
[INFO] [stdout] 208 | fn reconstruct_canon_cb(canon_freqs: &Vec<u8>) -> HashMap<u8, String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode` is never used
[INFO] [stdout]    --> src/compressor/huffman.rs:244:8
[INFO] [stdout]     |
[INFO] [stdout] 244 | pub fn encode(text: &Vec<u8>) -> (Vec <u8>, Vec<u8>) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode` is never used
[INFO] [stdout]    --> src/compressor/huffman.rs:261:8
[INFO] [stdout]     |
[INFO] [stdout] 261 | pub fn decode(data: &Vec<u8>, canon_freqs: &Vec<u8>) -> Vec<u8> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/dpql/zip.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let mut msg_bwt_idx_u8: Vec<u8> = msg_bwt_idx_u64.to_be_bytes().to_vec();
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "5218e3f1a5ad0bb96ed5848241d8d07a65bfbb6898ab81d0d9848c9029a7e11b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5218e3f1a5ad0bb96ed5848241d8d07a65bfbb6898ab81d0d9848c9029a7e11b", kill_on_drop: false }`
[INFO] [stdout] 5218e3f1a5ad0bb96ed5848241d8d07a65bfbb6898ab81d0d9848c9029a7e11b