[INFO] cloning repository https://github.com/JoyousOne/simple-file-compressor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JoyousOne/simple-file-compressor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoyousOne%2Fsimple-file-compressor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoyousOne%2Fsimple-file-compressor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 69bb3b769a6ddb2ee647bf838a5b887493cc6bd9
[INFO] testing JoyousOne/simple-file-compressor against 1.90.0 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoyousOne%2Fsimple-file-compressor" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/JoyousOne/simple-file-compressor
[INFO] finished tweaking git repo https://github.com/JoyousOne/simple-file-compressor
[INFO] tweaked toml for git repo https://github.com/JoyousOne/simple-file-compressor written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/JoyousOne/simple-file-compressor on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/JoyousOne/simple-file-compressor 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" "+1.90.0" "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
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.172
[INFO] [stderr]   Downloaded docopt v1.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5291ee253a22de078529bcce97c5106223bfc0734d93e027162fcea1ec804c28
[INFO] running `Command { std: "docker" "start" "-a" "5291ee253a22de078529bcce97c5106223bfc0734d93e027162fcea1ec804c28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5291ee253a22de078529bcce97c5106223bfc0734d93e027162fcea1ec804c28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5291ee253a22de078529bcce97c5106223bfc0734d93e027162fcea1ec804c28", kill_on_drop: false }`
[INFO] [stdout] 5291ee253a22de078529bcce97c5106223bfc0734d93e027162fcea1ec804c28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b7eb38bc5a64987c08e150adb370c699b43264b96536862dfa1cf18ab092f96
[INFO] running `Command { std: "docker" "start" "-a" "8b7eb38bc5a64987c08e150adb370c699b43264b96536862dfa1cf18ab092f96", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling docopt v1.1.1
[INFO] [stderr]    Compiling simple-file-compressor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/big_num.rs:47:33
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn substract(&mut self, other: &Self) {}
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `print_encoding` and `print_as_tree` are never used
[INFO] [stdout]    --> src/algorithms/huffman_tree.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 114 | impl Node {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 163 |     pub fn print_encoding(&self, encoding: Vec<u8>) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 188 |     pub fn print_as_tree(&self, prefix: &str, is_left: bool) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `len`, `print_encoding`, `print_tree`, `save_as_file`, and `load_from_file` are never used
[INFO] [stdout]    --> src/algorithms/huffman_tree.rs:380:12
[INFO] [stdout]     |
[INFO] [stdout] 294 | impl HuffmanTree {
[INFO] [stdout]     | ---------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 380 |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 510 |     pub fn print_encoding(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 514 |     pub fn print_tree(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 526 |     pub fn save_as_file(&self, file_path: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 542 |     pub fn load_from_file(file_path: &str) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Bit` is never used
[INFO] [stdout]  --> src/big_num.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | type Bit = u8;
[INFO] [stdout]   |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BigNum` is never constructed
[INFO] [stdout]  --> src/big_num.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct BigNum {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/big_num.rs:19:12
[INFO] [stdout]     |
[INFO] [stdout]  18 | impl BigNum {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout]  19 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  23 |     pub fn push_bit(&mut self, bit: Bit) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  30 |     pub fn add(&mut self, other: &Self) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  47 |     pub fn substract(&mut self, other: &Self) {}
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]  48 |
[INFO] [stdout]  49 |     pub fn multiply(&mut self, other: &Self) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  85 |     fn align_to_other(&mut self, other: &Self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  94 |     fn get_aligned_num(&self, other: &Self) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     pub fn print(&self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DecimalNum` is never constructed
[INFO] [stdout]    --> src/big_num.rs:156:12
[INFO] [stdout]     |
[INFO] [stdout] 156 | pub struct DecimalNum {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `with_capacity`, `multiply_by_two`, and `add_bit` are never used
[INFO] [stdout]    --> src/big_num.rs:161:12
[INFO] [stdout]     |
[INFO] [stdout] 160 | impl DecimalNum {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] 161 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 165 |     pub fn with_capacity(capacity: usize) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 171 |     fn multiply_by_two(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 187 |     fn add_bit(&mut self, bit: Bit) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push_byte` and `insert_byte` are never used
[INFO] [stdout]   --> src/compressed_buffer.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl CompressedBuffer {
[INFO] [stdout]    | --------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub fn push_byte(&mut self, byte: u8) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 |     pub fn insert_byte(&mut self, index: usize, byte: u8) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `add_count` and `reduce_count` are never used
[INFO] [stdout]   --> src/fenwick_tree.rs:82:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl<T> FenwickTree<T> {
[INFO] [stdout]    | ---------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 82 |     pub fn add_count(&mut self, index: T)
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn reduce_count(&mut self, index: T)
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `LZWEncoder` should have a snake case name
[INFO] [stdout]  --> src/algorithms/lzw_encoder.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod LZWEncoder {
[INFO] [stdout]   |         ^^^^^^^^^^ help: convert the identifier to snake case: `lzwencoder`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `RLE` should have a snake case name
[INFO] [stdout]  --> src/algorithms/run_length_encoding.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod RLE {
[INFO] [stdout]   |         ^^^ help: convert the identifier to snake case: `rle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.64s
[INFO] running `Command { std: "docker" "inspect" "8b7eb38bc5a64987c08e150adb370c699b43264b96536862dfa1cf18ab092f96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b7eb38bc5a64987c08e150adb370c699b43264b96536862dfa1cf18ab092f96", kill_on_drop: false }`
[INFO] [stdout] 8b7eb38bc5a64987c08e150adb370c699b43264b96536862dfa1cf18ab092f96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40e0ce7c4ea33873db1438cdb30066719cc4740ffa73a516ddca6293c2132a13
[INFO] running `Command { std: "docker" "start" "-a" "40e0ce7c4ea33873db1438cdb30066719cc4740ffa73a516ddca6293c2132a13", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-file-compressor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/big_num.rs:47:33
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn substract(&mut self, other: &Self) {}
[INFO] [stdout]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `print_encoding` and `print_as_tree` are never used
[INFO] [stdout]    --> src/algorithms/huffman_tree.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 114 | impl Node {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 163 |     pub fn print_encoding(&self, encoding: Vec<u8>) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 188 |     pub fn print_as_tree(&self, prefix: &str, is_left: bool) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `print_encoding` and `print_tree` are never used
[INFO] [stdout]    --> src/algorithms/huffman_tree.rs:510:12
[INFO] [stdout]     |
[INFO] [stdout] 294 | impl HuffmanTree {
[INFO] [stdout]     | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 510 |     pub fn print_encoding(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 514 |     pub fn print_tree(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `substract` and `print` are never used
[INFO] [stdout]    --> src/big_num.rs:47:12
[INFO] [stdout]     |
[INFO] [stdout]  18 | impl BigNum {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  47 |     pub fn substract(&mut self, other: &Self) {}
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     pub fn print(&self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/big_num.rs:161:12
[INFO] [stdout]     |
[INFO] [stdout] 160 | impl DecimalNum {
[INFO] [stdout]     | --------------- associated function in this implementation
[INFO] [stdout] 161 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push_byte` and `insert_byte` are never used
[INFO] [stdout]   --> src/compressed_buffer.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl CompressedBuffer {
[INFO] [stdout]    | --------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 77 |     pub fn push_byte(&mut self, byte: u8) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 |     pub fn insert_byte(&mut self, index: usize, byte: u8) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reduce_count` is never used
[INFO] [stdout]   --> src/fenwick_tree.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl<T> FenwickTree<T> {
[INFO] [stdout]    | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn reduce_count(&mut self, index: T)
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `LZWEncoder` should have a snake case name
[INFO] [stdout]  --> src/algorithms/lzw_encoder.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod LZWEncoder {
[INFO] [stdout]   |         ^^^^^^^^^^ help: convert the identifier to snake case: `lzwencoder`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `RLE` should have a snake case name
[INFO] [stdout]  --> src/algorithms/run_length_encoding.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub mod RLE {
[INFO] [stdout]   |         ^^^ help: convert the identifier to snake case: `rle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `Command { std: "docker" "inspect" "40e0ce7c4ea33873db1438cdb30066719cc4740ffa73a516ddca6293c2132a13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40e0ce7c4ea33873db1438cdb30066719cc4740ffa73a516ddca6293c2132a13", kill_on_drop: false }`
[INFO] [stdout] 40e0ce7c4ea33873db1438cdb30066719cc4740ffa73a516ddca6293c2132a13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b6a7755e9559f03a35bdf80bf3092f018e365dc1e1dfdcd6d2569d3a61dafe1e
[INFO] running `Command { std: "docker" "start" "-a" "b6a7755e9559f03a35bdf80bf3092f018e365dc1e1dfdcd6d2569d3a61dafe1e", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stdout] 
[INFO] [stderr]   --> src/big_num.rs:47:33
[INFO] [stdout] running 44 tests
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn substract(&mut self, other: &Self) {}
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `print_encoding` and `print_as_tree` are never used
[INFO] [stderr]    --> src/algorithms/huffman_tree.rs:163:12
[INFO] [stderr]     |
[INFO] [stderr] 114 | impl Node {
[INFO] [stderr]     | --------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 163 |     pub fn print_encoding(&self, encoding: Vec<u8>) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 188 |     pub fn print_as_tree(&self, prefix: &str, is_left: bool) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `print_encoding` and `print_tree` are never used
[INFO] [stderr]    --> src/algorithms/huffman_tree.rs:510:12
[INFO] [stderr]     |
[INFO] [stderr] 294 | impl HuffmanTree {
[INFO] [stderr]     | ---------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 510 |     pub fn print_encoding(&self) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 514 |     pub fn print_tree(&self) {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `substract` and `print` are never used
[INFO] [stderr]    --> src/big_num.rs:47:12
[INFO] [stderr]     |
[INFO] [stderr]  18 | impl BigNum {
[INFO] [stderr]     | ----------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr]  47 |     pub fn substract(&mut self, other: &Self) {}
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 106 |     pub fn print(&self) {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]    --> src/big_num.rs:161:12
[INFO] [stderr]     |
[INFO] [stderr] 160 | impl DecimalNum {
[INFO] [stderr]     | --------------- associated function in this implementation
[INFO] [stderr] 161 |     pub fn new() -> Self {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `push_byte` and `insert_byte` are never used
[INFO] [stderr]   --> src/compressed_buffer.rs:77:12
[INFO] [stderr]    |
[INFO] [stderr] 34 | impl CompressedBuffer {
[INFO] [stderr]    | --------------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 77 |     pub fn push_byte(&mut self, byte: u8) {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 83 |     pub fn insert_byte(&mut self, index: usize, byte: u8) {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `reduce_count` is never used
[INFO] [stderr]   --> src/fenwick_tree.rs:91:12
[INFO] [stderr]    |
[INFO] [stderr]  9 | impl<T> FenwickTree<T> {
[INFO] [stderr]    | ---------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 91 |     pub fn reduce_count(&mut self, index: T)
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: module `LZWEncoder` should have a snake case name
[INFO] [stderr]  --> src/algorithms/lzw_encoder.rs:1:9
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub mod LZWEncoder {
[INFO] [stderr]   |         ^^^^^^^^^^ help: convert the identifier to snake case: `lzwencoder`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: module `RLE` should have a snake case name
[INFO] [stderr]  --> src/algorithms/run_length_encoding.rs:1:9
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub mod RLE {
[INFO] [stderr]   |         ^^^ help: convert the identifier to snake case: `rle`
[INFO] [stderr] 
[INFO] [stderr] warning: `simple-file-compressor` (bin "simple-file-compressor" test) generated 9 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/simple_file_compressor-4beac0dc066319ac)
[INFO] [stdout] test algorithms::arithmetic_encoder::tests::arithmetic_encode_n_decode_with_metadatas ... ok
[INFO] [stdout] test algorithms::burrows_wheeler::tests::bwt_encode_benchmark ... ok
[INFO] [stdout] test algorithms::huffman_tree::tests::get_encoding ... ok
[INFO] [stdout] test algorithms::arithmetic_encoder::tests::arithmetic_simple_test ... ok
[INFO] [stdout] test algorithms::huffman_tree::tests::converting_tree_to_array ... ok
[INFO] [stdout] test algorithms::huffman_tree::tests::encode_n_decode_with_metadatas ... ok
[INFO] [stdout] test algorithms::huffman_tree::tests::test_decode ... ok
[INFO] [stdout] test algorithms::burrows_wheeler::tests::burrows_wheeler_decode ... ok
[INFO] [stdout] test algorithms::huffman_tree::tests::testing_indexing_by_char ... ok
[INFO] [stdout] test algorithms::huffman_tree::tests::testing_indexing_by_encoding ... ok
[INFO] [stdout] test algorithms::huffman_tree::tests::tree_with_null_char ... ok
[INFO] [stdout] test algorithms::move_to_front::tests::move_to_front_decode ... ok
[INFO] [stdout] test algorithms::lzw_encoder::tests::encode_n_decode ... ok
[INFO] [stdout] test algorithms::lzw_encoder::tests::parsing_encoding_through_huffman_encoding ... ok
[INFO] [stdout] test algorithms::lzw_encoder::tests::test_decode ... ok
[INFO] [stdout] test algorithms::lzw_encoder::tests::test_encode ... ok
[INFO] [stdout] test algorithms::lzw_encoder::tests::encode_n_decode_default_text_255 ... ok
[INFO] [stdout] test algorithms::run_length_encoding::RLE::tests::rle_simple_test ... ok
[INFO] [stdout] test algorithms::move_to_front::tests::move_to_front_encode ... ok
[INFO] [stdout] test algorithms::lzw_encoder::tests::encode_n_decode_with_metadatas ... ok
[INFO] [stdout] test big_num::tests::bignum_multiply ... ok
[INFO] [stdout] test big_num::tests::bignum_addition ... ok
[INFO] [stdout] test bit_queue::bit_queue_test ... ok
[INFO] [stdout] test compressed_buffer::tests::pushing_bit ... ok
[INFO] [stdout] test fenwick_tree::tests::fenwick_tree_search_range ... ok
[INFO] [stdout] test fenwick_tree::tests::fenwick_tree_sum ... ok
[INFO] [stdout] test big_num::tests::test_bits_to_decimal ... ok
[INFO] [stdout] test algorithms::huffman_tree::tests::tree_len ... ok
[INFO] [stdout] test file_handler::tests::compress_with_huffman_then_lzw ... ok
[INFO] [stdout] test utils::tests::test_entropy ... ok
[INFO] [stdout] test varsize::tests::test_decode_variable_width_code ... ok
[INFO] [stdout] test varsize::tests::test_encode_n_decode ... ok
[INFO] [stdout] test fenwick_tree::tests::fenwick_tree_update ... ok
[INFO] [stdout] test fenwick_tree::tests::fenwick_tree_get_bounds ... ok
[INFO] [stdout] test algorithms::burrows_wheeler::tests::burrows_wheeler_encoding_with_metadatas ... ok
[INFO] [stdout] test algorithms::burrows_wheeler::tests::burrows_wheeler_encode_sync ... ok
[INFO] [stdout] test file_handler::tests::compress_with_lzw_then_huffman ... ok
[INFO] [stdout] test varsize::tests::test_encode_variable_width_code ... ok
[INFO] [stdout] test algorithms::burrows_wheeler::tests::burrows_wheeler_encode ... ok
[INFO] [stdout] test algorithms::huffman_tree::tests::test_save_n_load_tree ... FAILED
[INFO] [stdout] test file_handler::tests::test_compress_n_uncompress_with_huffman_n_lzw ... FAILED
[INFO] [stdout] test file_handler::tests::compress_with_bwt_mtf_huff ... ok
[INFO] [stdout] test algorithms::arithmetic_encoder::tests::arithmetic_medium_test ... ok
[INFO] [stdout] test algorithms::arithmetic_encoder::tests::arithmetic_extensive_test ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- algorithms::huffman_tree::tests::test_save_n_load_tree stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'algorithms::huffman_tree::tests::test_save_n_load_tree' panicked at src/algorithms/huffman_tree.rs:531:14:
[INFO] [stdout] Failed to create file in src/huffman_tree.rs => fn save_as_file: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x593420598152 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x593420598152 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x593420598152 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x593420598152 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5934205bdba3 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5934205bdba3 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x593420594e93 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x593420594e93 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x593420597fa2 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5934205996c9 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x5934205994fe - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x59342051a694 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb6bd65493727d71a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x59342051a694 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x59342059a09e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h318e4efb8c1a5689
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x59342059a09e - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x593420599e6a - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x593420598649 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x593420599afd - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x5934205bc210 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5934205bc676 - core::result::unwrap_failed::h95bc3f5a607b2c95
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1765:5
[INFO] [stdout]   20:     0x59342049965e - core::result::Result<T,E>::expect::h2f1e3cec8f03525a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1119:23
[INFO] [stdout]   21:     0x5934204ce01c - simple_file_compressor::algorithms::huffman_tree::HuffmanTree::save_as_file::h07561cd6515f4cfc
[INFO] [stdout]                                at /opt/rustwide/workdir/src/algorithms/huffman_tree.rs:531:14
[INFO] [stdout]   22:     0x5934204ba60a - simple_file_compressor::algorithms::huffman_tree::tests::test_save_n_load_tree::h5e4d830efd714403
[INFO] [stdout]                                at /opt/rustwide/workdir/src/algorithms/huffman_tree.rs:837:23
[INFO] [stdout]   23:     0x5934204ba4b7 - simple_file_compressor::algorithms::huffman_tree::tests::test_save_n_load_tree::{{closure}}::hbd25f877128af3e7
[INFO] [stdout]                                at /opt/rustwide/workdir/src/algorithms/huffman_tree.rs:824:31
[INFO] [stdout]   24:     0x5934204a5ce6 - core::ops::function::FnOnce::call_once::hb2291bc88c2498bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   25:     0x59342051fefb - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   26:     0x59342051fefb - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   27:     0x59342051f035 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   28:     0x59342051f035 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   29:     0x59342051f035 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   30:     0x59342051f035 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   31:     0x59342051f035 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   32:     0x59342051f035 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   33:     0x59342051f035 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   34:     0x5934204e2c34 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   35:     0x5934204e2c34 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   36:     0x5934204e660a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   37:     0x5934204e660a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   38:     0x5934204e660a - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   39:     0x5934204e660a - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   40:     0x5934204e660a - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   41:     0x5934204e660a - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   42:     0x5934204e660a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   43:     0x59342059d11f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5924238c754de3b8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   44:     0x59342059d11f - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17
[INFO] [stdout]   45:     0x7ea76ccdfaa4 - <unknown>
[INFO] [stdout]   46:     0x7ea76cd6ca34 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- file_handler::tests::test_compress_n_uncompress_with_huffman_n_lzw stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'file_handler::tests::test_compress_n_uncompress_with_huffman_n_lzw' panicked at src/file_handler.rs:48:50:
[INFO] [stdout] Failed to create file.: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x593420598152 - std::backtrace_rs::backtrace::libunwind::trace::h2d45396358f41939
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x593420598152 - std::backtrace_rs::backtrace::trace_unsynchronized::hffcefc0b67f1d6e2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x593420598152 - std::sys::backtrace::_print_fmt::hd72f71d23b436b92
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x593420598152 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hdcfcb6d4c8489523
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5934205bdba3 - core::fmt::rt::Argument::fmt::h2c56b3114963061a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5934205bdba3 - core::fmt::write::h8a494366950f23bb
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x593420594e93 - std::io::default_write_fmt::h7b8824096454f323
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x593420594e93 - std::io::Write::write_fmt::h4e71294925c334d0
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x593420597fa2 - std::sys::backtrace::BacktraceLock::print::hb2a626a81e06b2dc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5934205996c9 - std::panicking::default_hook::{{closure}}::h4f78485264f12d10
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x5934205994fe - std::panicking::default_hook::h2c66fc99e962531d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x59342051a694 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb6bd65493727d71a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x59342051a694 - test::test_main_with_exit_callback::{{closure}}::h60217ec76a0ece4a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x59342059a09e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h318e4efb8c1a5689
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x59342059a09e - std::panicking::rust_panic_with_hook::h33ac55f64bbd807d
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x593420599e6a - std::panicking::begin_panic_handler::{{closure}}::h30e7cb89678a57fe
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:706:13
[INFO] [stdout]   16:     0x593420598649 - std::sys::backtrace::__rust_end_short_backtrace::hed60f27456c16ced
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x593420599afd - __rustc[de2ca18b4c54d5b8]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x5934205bc210 - core::panicking::panic_fmt::h62f63d096dd276af
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5934205bc676 - core::result::unwrap_failed::h95bc3f5a607b2c95
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1765:5
[INFO] [stdout]   20:     0x59342049965e - core::result::Result<T,E>::expect::h2f1e3cec8f03525a
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/result.rs:1119:23
[INFO] [stdout]   21:     0x5934204b4918 - simple_file_compressor::file_handler::create_file::h7774c1e5265982b5
[INFO] [stdout]                                at /opt/rustwide/workdir/src/file_handler.rs:48:50
[INFO] [stdout]   22:     0x5934204b55a3 - simple_file_compressor::file_handler::compress::hb8acfb9c4c30839e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/file_handler.rs:116:5
[INFO] [stdout]   23:     0x5934204c1b8b - simple_file_compressor::file_handler::tests::test_compress_n_uncompress_with_huffman_n_lzw::h5ee92b373f65ccad
[INFO] [stdout]                                at /opt/rustwide/workdir/src/file_handler.rs:165:9
[INFO] [stdout]   24:     0x5934204c1b07 - simple_file_compressor::file_handler::tests::test_compress_n_uncompress_with_huffman_n_lzw::{{closure}}::h9c83bd10e387b742
[INFO] [stdout]                                at /opt/rustwide/workdir/src/file_handler.rs:160:55
[INFO] [stdout]   25:     0x5934204a5986 - core::ops::function::FnOnce::call_once::h85bbd6d0c015aaff
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   26:     0x59342051fefb - core::ops::function::FnOnce::call_once::h1f9474f1347fff52
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   27:     0x59342051fefb - test::__rust_begin_short_backtrace::ha52ab26e77157f03
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:648:18
[INFO] [stdout]   28:     0x59342051f035 - test::run_test_in_process::{{closure}}::h229c1a11a50b261f
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:74
[INFO] [stdout]   29:     0x59342051f035 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h78821afbf97b39a9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   30:     0x59342051f035 - std::panicking::catch_unwind::do_call::h53abf3ed5bd32ba3
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   31:     0x59342051f035 - std::panicking::catch_unwind::h6deb5fe1e91873c9
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   32:     0x59342051f035 - std::panic::catch_unwind::hea0829b6b565654b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   33:     0x59342051f035 - test::run_test_in_process::hdc44dfecea3db21b
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:671:27
[INFO] [stdout]   34:     0x59342051f035 - test::run_test::{{closure}}::h0364ba59bf23f652
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:592:43
[INFO] [stdout]   35:     0x5934204e2c34 - test::run_test::{{closure}}::h32730b304eec05da
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/test/src/lib.rs:622:41
[INFO] [stdout]   36:     0x5934204e2c34 - std::sys::backtrace::__rust_begin_short_backtrace::h177cb952fc54ad2c
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   37:     0x5934204e660a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h119d903520007597
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   38:     0x5934204e660a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hab88401d606702a6
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   39:     0x5934204e660a - std::panicking::catch_unwind::do_call::h163fe12cca9901c2
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:589:40
[INFO] [stdout]   40:     0x5934204e660a - std::panicking::catch_unwind::he81557d0e17cc1bc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panicking.rs:552:19
[INFO] [stdout]   41:     0x5934204e660a - std::panic::catch_unwind::hc2b8e79c20593955
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/panic.rs:359:14
[INFO] [stdout]   42:     0x5934204e660a - std::thread::Builder::spawn_unchecked_::{{closure}}::hfa6b4978e07815cc
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   43:     0x5934204e660a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hddcd7484a13fd793
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   44:     0x59342059d11f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5924238c754de3b8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   45:     0x59342059d11f - std::sys::pal::unix::thread::Thread::new::thread_start::hb6e99e73da4d28f8
[INFO] [stdout]                                at /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/std/src/sys/pal/unix/thread.rs:107:17
[INFO] [stdout]   46:     0x7ea76ccdfaa4 - <unknown>
[INFO] [stdout]   47:     0x7ea76cd6ca34 - clone
[INFO] [stdout]   48:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     algorithms::huffman_tree::tests::test_save_n_load_tree
[INFO] [stdout]     file_handler::tests::test_compress_n_uncompress_with_huffman_n_lzw
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 42 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.00s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin simple-file-compressor`
[INFO] running `Command { std: "docker" "inspect" "b6a7755e9559f03a35bdf80bf3092f018e365dc1e1dfdcd6d2569d3a61dafe1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6a7755e9559f03a35bdf80bf3092f018e365dc1e1dfdcd6d2569d3a61dafe1e", kill_on_drop: false }`
[INFO] [stdout] b6a7755e9559f03a35bdf80bf3092f018e365dc1e1dfdcd6d2569d3a61dafe1e
