[INFO] cloning repository https://github.com/userr2232/fixed-length-bd2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/userr2232/fixed-length-bd2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuserr2232%2Ffixed-length-bd2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuserr2232%2Ffixed-length-bd2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 67d79fdc9549d6653f236a2b5a4146e1952b5c9e
[INFO] testing userr2232/fixed-length-bd2 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fuserr2232%2Ffixed-length-bd2" "/workspace/builds/worker-35/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-35/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/userr2232/fixed-length-bd2 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/userr2232/fixed-length-bd2
[INFO] finished tweaking git repo https://github.com/userr2232/fixed-length-bd2
[INFO] tweaked toml for git repo https://github.com/userr2232/fixed-length-bd2 written to /workspace/builds/worker-35/source/Cargo.toml
[INFO] crate git repo https://github.com/userr2232/fixed-length-bd2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c7f5bee8007cf90c4ef78e92df5c7dfc229e635345dd44a67a85afa1bee01fc
[INFO] running `Command { std: "docker" "start" "-a" "2c7f5bee8007cf90c4ef78e92df5c7dfc229e635345dd44a67a85afa1bee01fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c7f5bee8007cf90c4ef78e92df5c7dfc229e635345dd44a67a85afa1bee01fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c7f5bee8007cf90c4ef78e92df5c7dfc229e635345dd44a67a85afa1bee01fc", kill_on_drop: false }`
[INFO] [stdout] 2c7f5bee8007cf90c4ef78e92df5c7dfc229e635345dd44a67a85afa1bee01fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2f0920487326ee643ff9bf67171dd8b72eba6cc00d0b53869b89c20e0d5282b
[INFO] running `Command { std: "docker" "start" "-a" "c2f0920487326ee643ff9bf67171dd8b72eba6cc00d0b53869b89c20e0d5282b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]    Compiling fixed_width v0.4.0
[INFO] [stderr]    Compiling lab1_1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]   --> src/main.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut bytes: u64 = 0;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut file = File::open(path).expect("Error while reading from file.");
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut bytes: u64 = 0;
[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]   --> src/main.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 |             let mut file = OpenOptions::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]   --> src/main.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let mut file = File::open(path).expect("Error while reading from file.");
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loadAlumnos` should have a snake case name
[INFO] [stdout]   --> src/main.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn loadAlumnos(path: &str) -> Vec<Alumno> {
[INFO] [stdout]    |    ^^^^^^^^^^^ help: convert the identifier to snake case: `load_alumnos`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loadMatriculas` should have a snake case name
[INFO] [stdout]   --> src/main.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn loadMatriculas(path: &str) -> Vec<Matricula> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `load_matriculas`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `lineN` should have a snake case name
[INFO] [stdout]   --> src/main.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |     let mut lineN: u64 = 0;
[INFO] [stdout]    |             ^^^^^ help: convert the identifier to snake case: `line_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:113:17
[INFO] [stdout]     |
[INFO] [stdout] 113 |                 file.write(b"\n");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `alumnoIn` should have a snake case name
[INFO] [stdout]    --> src/main.rs:123:13
[INFO] [stdout]     |
[INFO] [stdout] 123 |         let alumnoIn = "static/alumnos/in.txt";
[INFO] [stdout]     |             ^^^^^^^^ help: convert the identifier to snake case: `alumno_in`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `alumnoOut` should have a snake case name
[INFO] [stdout]    --> src/main.rs:124:13
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let alumnoOut = "static/alumnos/out.txt";
[INFO] [stdout]     |             ^^^^^^^^^ help: convert the identifier to snake case: `alumno_out`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `matriculaIn` should have a snake case name
[INFO] [stdout]    --> src/main.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |         let matriculaIn = "static/matriculas/in.txt";
[INFO] [stdout]     |             ^^^^^^^^^^^ help: convert the identifier to snake case: `matricula_in`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `matriculaOut` should have a snake case name
[INFO] [stdout]    --> src/main.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let matriculaOut = "static/matriculas/out.txt";
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: convert the identifier to snake case: `matricula_out`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 30s
[INFO] running `Command { std: "docker" "inspect" "c2f0920487326ee643ff9bf67171dd8b72eba6cc00d0b53869b89c20e0d5282b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2f0920487326ee643ff9bf67171dd8b72eba6cc00d0b53869b89c20e0d5282b", kill_on_drop: false }`
[INFO] [stdout] c2f0920487326ee643ff9bf67171dd8b72eba6cc00d0b53869b89c20e0d5282b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c2f271fcfbdd856b1a29c7f935b82292dc809fe38f6e080dfd27f546240f94e
[INFO] running `Command { std: "docker" "start" "-a" "3c2f271fcfbdd856b1a29c7f935b82292dc809fe38f6e080dfd27f546240f94e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling lab1_1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]   --> src/main.rs:70:13
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut bytes: u64 = 0;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut file = File::open(path).expect("Error while reading from file.");
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut bytes: u64 = 0;
[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]   --> src/main.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 |             let mut file = OpenOptions::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]   --> src/main.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let mut file = File::open(path).expect("Error while reading from file.");
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loadAlumnos` should have a snake case name
[INFO] [stdout]   --> src/main.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn loadAlumnos(path: &str) -> Vec<Alumno> {
[INFO] [stdout]    |    ^^^^^^^^^^^ help: convert the identifier to snake case: `load_alumnos`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `loadMatriculas` should have a snake case name
[INFO] [stdout]   --> src/main.rs:56:4
[INFO] [stdout]    |
[INFO] [stdout] 56 | fn loadMatriculas(path: &str) -> Vec<Matricula> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `load_matriculas`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `lineN` should have a snake case name
[INFO] [stdout]   --> src/main.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |     let mut lineN: u64 = 0;
[INFO] [stdout]    |             ^^^^^ help: convert the identifier to snake case: `line_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:113:17
[INFO] [stdout]     |
[INFO] [stdout] 113 |                 file.write(b"\n");
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `alumnoIn` should have a snake case name
[INFO] [stdout]    --> src/main.rs:123:13
[INFO] [stdout]     |
[INFO] [stdout] 123 |         let alumnoIn = "static/alumnos/in.txt";
[INFO] [stdout]     |             ^^^^^^^^ help: convert the identifier to snake case: `alumno_in`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `alumnoOut` should have a snake case name
[INFO] [stdout]    --> src/main.rs:124:13
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let alumnoOut = "static/alumnos/out.txt";
[INFO] [stdout]     |             ^^^^^^^^^ help: convert the identifier to snake case: `alumno_out`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `matriculaIn` should have a snake case name
[INFO] [stdout]    --> src/main.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |         let matriculaIn = "static/matriculas/in.txt";
[INFO] [stdout]     |             ^^^^^^^^^^^ help: convert the identifier to snake case: `matricula_in`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `matriculaOut` should have a snake case name
[INFO] [stdout]    --> src/main.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let matriculaOut = "static/matriculas/out.txt";
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: convert the identifier to snake case: `matricula_out`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "3c2f271fcfbdd856b1a29c7f935b82292dc809fe38f6e080dfd27f546240f94e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c2f271fcfbdd856b1a29c7f935b82292dc809fe38f6e080dfd27f546240f94e", kill_on_drop: false }`
[INFO] [stdout] 3c2f271fcfbdd856b1a29c7f935b82292dc809fe38f6e080dfd27f546240f94e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 05287ca5744cd0e4bf18a80ec19b9659053e2aae70c4e4269a8df61eacb79e4a
[INFO] running `Command { std: "docker" "start" "-a" "05287ca5744cd0e4bf18a80ec19b9659053e2aae70c4e4269a8df61eacb79e4a", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]   --> src/main.rs:70:13
[INFO] [stderr]    |
[INFO] [stderr] 70 |     let mut bytes: u64 = 0;
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:68:9
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let mut file = File::open(path).expect("Error while reading from file.");
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 |     let mut bytes: u64 = 0;
[INFO] [stderr]    |         ----^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |             let mut file = OpenOptions::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]   --> src/main.rs:94:9
[INFO] [stderr]    |
[INFO] [stderr] 94 |     let mut file = File::open(path).expect("Error while reading from file.");
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function `loadAlumnos` should have a snake case name
[INFO] [stderr]   --> src/main.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn loadAlumnos(path: &str) -> Vec<Alumno> {
[INFO] [stderr]    |    ^^^^^^^^^^^ help: convert the identifier to snake case: `load_alumnos`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `loadMatriculas` should have a snake case name
[INFO] [stderr]   --> src/main.rs:56:4
[INFO] [stderr]    |
[INFO] [stderr] 56 | fn loadMatriculas(path: &str) -> Vec<Matricula> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `load_matriculas`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `lineN` should have a snake case name
[INFO] [stderr]   --> src/main.rs:96:13
[INFO] [stderr]    |
[INFO] [stderr] 96 |     let mut lineN: u64 = 0;
[INFO] [stderr]    |             ^^^^^ help: convert the identifier to snake case: `line_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:113:17
[INFO] [stderr]     |
[INFO] [stderr] 113 |                 file.write(b"\n");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable `alumnoIn` should have a snake case name
[INFO] [stderr]    --> src/main.rs:123:13
[INFO] [stderr]     |
[INFO] [stderr] 123 |         let alumnoIn = "static/alumnos/in.txt";
[INFO] [stderr]     |             ^^^^^^^^ help: convert the identifier to snake case: `alumno_in`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `alumnoOut` should have a snake case name
[INFO] [stderr]    --> src/main.rs:124:13
[INFO] [stderr]     |
[INFO] [stderr] 124 |         let alumnoOut = "static/alumnos/out.txt";
[INFO] [stderr]     |             ^^^^^^^^^ help: convert the identifier to snake case: `alumno_out`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `matriculaIn` should have a snake case name
[INFO] [stderr]    --> src/main.rs:141:13
[INFO] [stderr]     |
[INFO] [stderr] 141 |         let matriculaIn = "static/matriculas/in.txt";
[INFO] [stderr]     |             ^^^^^^^^^^^ help: convert the identifier to snake case: `matricula_in`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `matriculaOut` should have a snake case name
[INFO] [stderr]    --> src/main.rs:142:13
[INFO] [stderr]     |
[INFO] [stderr] 142 |         let matriculaOut = "static/matriculas/out.txt";
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: convert the identifier to snake case: `matricula_out`
[INFO] [stderr] 
[INFO] [stderr] warning: `lab1_1` (bin "lab1_1" test) generated 13 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/lab1_1-f2a734ae871cb889)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "05287ca5744cd0e4bf18a80ec19b9659053e2aae70c4e4269a8df61eacb79e4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05287ca5744cd0e4bf18a80ec19b9659053e2aae70c4e4269a8df61eacb79e4a", kill_on_drop: false }`
[INFO] [stdout] 05287ca5744cd0e4bf18a80ec19b9659053e2aae70c4e4269a8df61eacb79e4a