[INFO] cloning repository https://github.com/leonardchinonso/verifile
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leonardchinonso/verifile" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleonardchinonso%2Fverifile", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleonardchinonso%2Fverifile'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec84ca1b4eae3935e8e7963d26a4341cb5b63b15
[INFO] testing leonardchinonso/verifile against 1.93.0 for beta-1.94-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleonardchinonso%2Fverifile" "/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/leonardchinonso/verifile
[INFO] finished tweaking git repo https://github.com/leonardchinonso/verifile
[INFO] tweaked toml for git repo https://github.com/leonardchinonso/verifile written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/leonardchinonso/verifile on toolchain 1.93.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.93.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/leonardchinonso/verifile 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" "+1.93.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sha256 v1.4.0
[INFO] [stderr]   Downloaded clap v4.4.10
[INFO] [stderr]   Downloaded async-trait v0.1.74
[INFO] [stderr]   Downloaded clap_builder v4.4.9
[INFO] [stderr]   Downloaded rustix v0.38.25
[INFO] [stderr]   Downloaded tokio v1.34.0
[INFO] [stderr]   Downloaded linux-raw-sys v0.4.11
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 706c07b06ace365df7d75f5467514dc3b931e07736cbab6e4373db0a81702c34
[INFO] running `Command { std: "docker" "start" "-a" "706c07b06ace365df7d75f5467514dc3b931e07736cbab6e4373db0a81702c34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "706c07b06ace365df7d75f5467514dc3b931e07736cbab6e4373db0a81702c34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "706c07b06ace365df7d75f5467514dc3b931e07736cbab6e4373db0a81702c34", kill_on_drop: false }`
[INFO] [stdout] 706c07b06ace365df7d75f5467514dc3b931e07736cbab6e4373db0a81702c34
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99aadaaad3308f194e9cc25b1ca808c6f947ab3e84c5c5bec1b9fb4ad65cc18b
[INFO] running `Command { std: "docker" "start" "-a" "99aadaaad3308f194e9cc25b1ca808c6f947ab3e84c5c5bec1b9fb4ad65cc18b", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling rustix v0.38.25
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]    Compiling async-trait v0.1.74
[INFO] [stderr]    Compiling linux-raw-sys v0.4.11
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]    Compiling cpufeatures v0.2.11
[INFO] [stderr]    Compiling bytes v1.5.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.13
[INFO] [stderr]    Compiling anstyle-parse v0.2.2
[INFO] [stderr]    Compiling ryu v1.0.15
[INFO] [stderr]    Compiling itoa v1.0.9
[INFO] [stderr]    Compiling anstyle v1.0.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling termcolor v1.4.0
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling clap_lex v0.6.0
[INFO] [stderr]    Compiling anstream v0.6.4
[INFO] [stderr]    Compiling clap_builder v4.4.9
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling tokio v1.34.0
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling is-terminal v0.4.9
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]    Compiling clap_derive v4.4.7
[INFO] [stderr]    Compiling env_logger v0.10.1
[INFO] [stderr]    Compiling sha256 v1.4.0
[INFO] [stderr]    Compiling clap v4.4.10
[INFO] [stderr]    Compiling common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> common/src/model/merkle.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |         if index < 0 || index > self.data.len() {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> common/src/model/merkle.rs:129:12
[INFO] [stdout]     |
[INFO] [stdout] 129 |         if index < 0 || index >= self.data.len() {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling client v0.1.0 (/opt/rustwide/workdir/client)
[INFO] [stderr]    Compiling server v0.1.0 (/opt/rustwide/workdir/server)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> client/src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut args = args::Argument::parse();
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `file_names`, `files_data`, and `downloaded_file` are never read
[INFO] [stdout]   --> client/src/client.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct Client {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 44 |     files: Vec<FileInfo>,
[INFO] [stdout] 45 |     file_names: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 46 |     files_data: Vec<Vec<u8>>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     downloaded_file: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.87s
[INFO] running `Command { std: "docker" "inspect" "99aadaaad3308f194e9cc25b1ca808c6f947ab3e84c5c5bec1b9fb4ad65cc18b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99aadaaad3308f194e9cc25b1ca808c6f947ab3e84c5c5bec1b9fb4ad65cc18b", kill_on_drop: false }`
[INFO] [stdout] 99aadaaad3308f194e9cc25b1ca808c6f947ab3e84c5c5bec1b9fb4ad65cc18b
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7431fb6f3a70ba6e3e4d41dabaa6f1692c1f06d525dc2ec194e257a3b217987e
[INFO] running `Command { std: "docker" "start" "-a" "7431fb6f3a70ba6e3e4d41dabaa6f1692c1f06d525dc2ec194e257a3b217987e", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stderr]    Compiling client v0.1.0 (/opt/rustwide/workdir/client)
[INFO] [stderr]    Compiling server v0.1.0 (/opt/rustwide/workdir/server)
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> common/src/model/merkle.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |         if index < 0 || index > self.data.len() {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> common/src/model/merkle.rs:129:12
[INFO] [stdout]     |
[INFO] [stdout] 129 |         if index < 0 || index >= self.data.len() {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vector`
[INFO] [stdout]    --> common/src/model/merkle.rs:313:13
[INFO] [stdout]     |
[INFO] [stdout] 313 |         let vector = build_merkle_vector(&data);
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_vector`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vector`
[INFO] [stdout]    --> common/src/model/merkle.rs:329:13
[INFO] [stdout]     |
[INFO] [stdout] 329 |         let vector = build_merkle_vector(&data);
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_vector`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> common/src/model/merkle.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |         if index < 0 || index > self.data.len() {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> common/src/model/merkle.rs:129:12
[INFO] [stdout]     |
[INFO] [stdout] 129 |         if index < 0 || index >= self.data.len() {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> client/src/client.rs:274:13
[INFO] [stdout]     |
[INFO] [stdout] 274 |         let mut client = Client::new();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> client/src/client.rs:281:26
[INFO] [stdout]     |
[INFO] [stdout] 281 |         let (file_names, mut expected_files) = parse_files();
[INFO] [stdout]     |                          ----^^^^^^^^^^^^^^
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> client/src/client.rs:291:13
[INFO] [stdout]     |
[INFO] [stdout] 291 |         let mut client = Client::new();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> client/src/main.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut args = args::Argument::parse();
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `file_names`, `files_data`, and `downloaded_file` are never read
[INFO] [stdout]   --> client/src/client.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct Client {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 44 |     files: Vec<FileInfo>,
[INFO] [stdout] 45 |     file_names: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 46 |     files_data: Vec<Vec<u8>>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     downloaded_file: Vec<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `Command { std: "docker" "inspect" "7431fb6f3a70ba6e3e4d41dabaa6f1692c1f06d525dc2ec194e257a3b217987e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7431fb6f3a70ba6e3e4d41dabaa6f1692c1f06d525dc2ec194e257a3b217987e", kill_on_drop: false }`
[INFO] [stdout] 7431fb6f3a70ba6e3e4d41dabaa6f1692c1f06d525dc2ec194e257a3b217987e
[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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 33c5c1e55553b1715c895a4012452564bbe1ad53faaaed938b42df7893660c8a
[INFO] running `Command { std: "docker" "start" "-a" "33c5c1e55553b1715c895a4012452564bbe1ad53faaaed938b42df7893660c8a", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> common/src/model/merkle.rs:102:12
[INFO] [stderr]     |
[INFO] [stderr] 102 |         if index < 0 || index > self.data.len() {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> common/src/model/merkle.rs:129:12
[INFO] [stderr]     |
[INFO] [stderr] 129 |         if index < 0 || index >= self.data.len() {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vector`
[INFO] [stderr]    --> common/src/model/merkle.rs:313:13
[INFO] [stderr]     |
[INFO] [stderr] 313 |         let vector = build_merkle_vector(&data);
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_vector`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vector`
[INFO] [stderr]    --> common/src/model/merkle.rs:329:13
[INFO] [stderr]     |
[INFO] [stderr] 329 |         let vector = build_merkle_vector(&data);
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_vector`
[INFO] [stderr] 
[INFO] [stderr] warning: `common` (lib) generated 2 warnings
[INFO] [stderr] warning: `common` (lib test) generated 4 warnings (2 duplicates) (run `cargo fix --lib -p common --tests` to apply 2 suggestions)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> client/src/client.rs:274:13
[INFO] [stderr]     |
[INFO] [stderr] 274 |         let mut client = Client::new();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> client/src/client.rs:281:26
[INFO] [stderr]     |
[INFO] [stderr] 281 |         let (file_names, mut expected_files) = parse_files();
[INFO] [stderr]     |                          ----^^^^^^^^^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> client/src/client.rs:291:13
[INFO] [stderr]     |
[INFO] [stderr] 291 |         let mut client = Client::new();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> client/src/main.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut args = args::Argument::parse();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: fields `file_names`, `files_data`, and `downloaded_file` are never read
[INFO] [stderr]   --> client/src/client.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 43 | pub struct Client {
[INFO] [stderr]    |            ------ fields in this struct
[INFO] [stderr] 44 |     files: Vec<FileInfo>,
[INFO] [stderr] 45 |     file_names: Vec<String>,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 46 |     files_data: Vec<Vec<u8>>,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 49 |     downloaded_file: Vec<u8>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `client` (bin "client" test) generated 5 warnings (run `cargo fix --bin "client" -p client --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/client-255816fa0e0c4904)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test args::test::parsing_argument_works ... ok
[INFO] [stdout] test client::test::load_files_into_memory_works ... ok
[INFO] [stdout] test client::test::mock_server_has_correct_files ... ok
[INFO] [stdout] test client::test::mock_server_does_not_have_correct_files ... ok
[INFO] [stdout] test client::test::build_merkle_tree_and_save_to_disk_works ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- client::test::build_merkle_tree_and_save_to_disk_works stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'client::test::build_merkle_tree_and_save_to_disk_works' (26) panicked at client/src/client.rs:93:54:
[INFO] [stdout] json file creation should not fail: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5e4b673dc692 - std::backtrace_rs::backtrace::libunwind::trace::h90e89fac33585832
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5e4b673dc692 - std::backtrace_rs::backtrace::trace_unsynchronized::heebcf2380a8e7359
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5e4b673dc692 - std::sys::backtrace::_print_fmt::hdf3e2a22d2f810db
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:68:9
[INFO] [stdout]    3:     0x5e4b673dc692 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hac1d885928ba8582
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:38:26
[INFO] [stdout]    4:     0x5e4b673ec637 - core::fmt::rt::Argument::fmt::h6901eb7c19abebe8
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5e4b673ec637 - core::fmt::write::h83ebb4d32483be9e
[INFO] [stdout]    6:     0x5e4b673ab336 - std::io::default_write_fmt::h751a79cdae495f10
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5e4b673ab336 - std::io::Write::write_fmt::h9ef514f8700ff7b2
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5e4b673bb9a9 - std::sys::backtrace::BacktraceLock::print::hcc2e1a3ac996c911
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:41:9
[INFO] [stdout]    9:     0x5e4b673bb9a9 - std::panicking::default_hook::{{closure}}::h8e9c4d1276f0925f
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5e4b673bb841 - std::panicking::default_hook::h2b2078d38b534dfb
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5e4b6735b9ce - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h39d051e7dedac6a7
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5e4b6735b9ce - test::test_main_with_exit_callback::{{closure}}::h4b005fe75814c302
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5e4b673bbc22 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hd426070722c13cbf
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5e4b673bbc22 - std::panicking::panic_with_hook::h39b739724e701bfd
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5e4b673bba68 - std::panicking::panic_handler::{{closure}}::he540c4833054e458
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x5e4b673b6fe9 - std::sys::backtrace::__rust_end_short_backtrace::hfa179d89deec8aed
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:176:18
[INFO] [stdout]   17:     0x5e4b673a00fd - __rustc[d131491b17107b07]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5e4b673f3d6c - core::panicking::panic_fmt::ha564519d657d9c46
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5e4b673f3562 - core::result::unwrap_failed::h23873bb39ca9a844
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x5e4b673344de - core::result::Result<T,E>::expect::h9aae744a9fbc16fd
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/result.rs:1185:23
[INFO] [stdout]   21:     0x5e4b67337f57 - client::client::Client::build_merkle_tree_and_save_to_disk::h140ba569e090753e
[INFO] [stdout]                                at /opt/rustwide/workdir/client/src/client.rs:93:54
[INFO] [stdout]   22:     0x5e4b673372ea - client::client::test::build_merkle_tree_and_save_to_disk_works::ha11367dc2d422643
[INFO] [stdout]                                at /opt/rustwide/workdir/client/src/client.rs:262:16
[INFO] [stdout]   23:     0x5e4b673373b7 - client::client::test::build_merkle_tree_and_save_to_disk_works::{{closure}}::h819e02a784f183b8
[INFO] [stdout]                                at /opt/rustwide/workdir/client/src/client.rs:257:50
[INFO] [stdout]   24:     0x5e4b67330a56 - core::ops::function::FnOnce::call_once::hd4aafeb69ebef3b1
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x5e4b6735b7fb - core::ops::function::FnOnce::call_once::h0217b30cfdee2e67
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x5e4b6735b7fb - test::__rust_begin_short_backtrace::h6d98714a1e28f556
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:663:18
[INFO] [stdout]   27:     0x5e4b6736f18a - test::run_test_in_process::{{closure}}::he2c70d2634d3a3cc
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:686:74
[INFO] [stdout]   28:     0x5e4b6736f18a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h40a0a825bcf17fdd
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   29:     0x5e4b6736f18a - std::panicking::catch_unwind::do_call::h6c8eb5dd6e7b5975
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:581:40
[INFO] [stdout]   30:     0x5e4b6736f18a - std::panicking::catch_unwind::h55455eac2972ad1e
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:544:19
[INFO] [stdout]   31:     0x5e4b6736f18a - std::panic::catch_unwind::h0025465150a5e558
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panic.rs:359:14
[INFO] [stdout]   32:     0x5e4b6736f18a - test::run_test_in_process::hb61e682f9b630fbc
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:686:27
[INFO] [stdout]   33:     0x5e4b6736f18a - test::run_test::{{closure}}::hc2c2a7a38ab176e2
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:607:43
[INFO] [stdout]   34:     0x5e4b67349424 - test::run_test::{{closure}}::ha91867b85cd2a911
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:637:41
[INFO] [stdout]   35:     0x5e4b67349424 - std::sys::backtrace::__rust_begin_short_backtrace::ha00a9fe02049c339
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:160:18
[INFO] [stdout]   36:     0x5e4b6734cd52 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::hd629fba9153dfb55
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/thread/lifecycle.rs:92:13
[INFO] [stdout]   37:     0x5e4b6734cd52 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4189018816a5c5d9
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   38:     0x5e4b6734cd52 - std::panicking::catch_unwind::do_call::hf9fcdbca3c2e9877
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:581:40
[INFO] [stdout]   39:     0x5e4b6734cd52 - std::panicking::catch_unwind::h97b92d88631c7c64
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:544:19
[INFO] [stdout]   40:     0x5e4b6734cd52 - std::panic::catch_unwind::ha77cdbb68e725e5e
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panic.rs:359:14
[INFO] [stdout]   41:     0x5e4b6734cd52 - std::thread::lifecycle::spawn_unchecked::{{closure}}::h511f05bc1a132253
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/thread/lifecycle.rs:90:26
[INFO] [stdout]   42:     0x5e4b6734cd52 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6b68b31e9b685cb8
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   43:     0x5e4b673b266f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h22a27d165e4e871d
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   44:     0x5e4b673b266f - std::sys::thread::unix::Thread::new::thread_start::h45cc87bb053add0f
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   45:     0x743028d51aa4 - <unknown>
[INFO] [stdout]   46:     0x743028ddea64 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     client::test::build_merkle_tree_and_save_to_disk_works
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 4 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `-p client --bin client`
[INFO] running `Command { std: "docker" "inspect" "33c5c1e55553b1715c895a4012452564bbe1ad53faaaed938b42df7893660c8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33c5c1e55553b1715c895a4012452564bbe1ad53faaaed938b42df7893660c8a", kill_on_drop: false }`
[INFO] [stdout] 33c5c1e55553b1715c895a4012452564bbe1ad53faaaed938b42df7893660c8a
