[INFO] cloning repository https://github.com/lamtailoi2/learn-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lamtailoi2/learn-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flamtailoi2%2Flearn-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flamtailoi2%2Flearn-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9db0f3b4961bc15aee914a80d75fe448bfaa98b1
[INFO] checking lamtailoi2/learn-rust against master#c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3 for pr-141352
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flamtailoi2%2Flearn-rust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lamtailoi2/learn-rust on toolchain c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lamtailoi2/learn-rust
[INFO] finished tweaking git repo https://github.com/lamtailoi2/learn-rust
[INFO] tweaked toml for git repo https://github.com/lamtailoi2/learn-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/lamtailoi2/learn-rust 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" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6bbf9350f037c2523b1b2a82a172ef01a2e22b79e03a753a06949b0e3aaeafb4
[INFO] running `Command { std: "docker" "start" "-a" "6bbf9350f037c2523b1b2a82a172ef01a2e22b79e03a753a06949b0e3aaeafb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bbf9350f037c2523b1b2a82a172ef01a2e22b79e03a753a06949b0e3aaeafb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bbf9350f037c2523b1b2a82a172ef01a2e22b79e03a753a06949b0e3aaeafb4", kill_on_drop: false }`
[INFO] [stdout] 6bbf9350f037c2523b1b2a82a172ef01a2e22b79e03a753a06949b0e3aaeafb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+c43786c9b7b8d8dcc3f9c604e0e3074c16ed69d3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b7af30dbab888423ffea12a1df162cb3d939b2dd81c1e022631bc1f070e5f27
[INFO] running `Command { std: "docker" "start" "-a" "1b7af30dbab888423ffea12a1df162cb3d939b2dd81c1e022631bc1f070e5f27", kill_on_drop: false }`
[INFO] [stderr]     Checking log v0.4.26
[INFO] [stderr]     Checking learn-rust-1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/main.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:90:21
[INFO] [stdout]    |
[INFO] [stdout] 90 |                 let mut update_ID_normalized = update_ID.trim().to_lowercase();
[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: method `getName` is never used
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | trait StudentTrait {
[INFO] [stdout]    |       ------------ method in this trait
[INFO] [stdout] 10 |     fn getInfo(&self) -> String;
[INFO] [stdout] 11 |     fn getName(&self) -> String;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `getInfo` should have a snake case name
[INFO] [stdout]   --> src/main.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn getInfo(&self) -> String;
[INFO] [stdout]    |        ^^^^^^^ help: convert the identifier to snake case: `get_info`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `getName` should have a snake case name
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn getName(&self) -> String;
[INFO] [stdout]    |        ^^^^^^^ help: convert the identifier to snake case: `get_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `delete_ID` should have a snake case name
[INFO] [stdout]   --> src/main.rs:67:25
[INFO] [stdout]    |
[INFO] [stdout] 67 |                 let mut delete_ID = String::new();
[INFO] [stdout]    |                         ^^^^^^^^^ help: convert the identifier to snake case: `delete_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `update_ID` should have a snake case name
[INFO] [stdout]   --> src/main.rs:88:25
[INFO] [stdout]    |
[INFO] [stdout] 88 |                 let mut update_ID = String::new();
[INFO] [stdout]    |                         ^^^^^^^^^ help: convert the identifier to snake case: `update_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `update_ID_normalized` should have a snake case name
[INFO] [stdout]   --> src/main.rs:90:25
[INFO] [stdout]    |
[INFO] [stdout] 90 |                 let mut update_ID_normalized = update_ID.trim().to_lowercase();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `update_id_normalized`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/main.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{self, Read, Write};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:90:21
[INFO] [stdout]    |
[INFO] [stdout] 90 |                 let mut update_ID_normalized = update_ID.trim().to_lowercase();
[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: method `getName` is never used
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 9  | trait StudentTrait {
[INFO] [stdout]    |       ------------ method in this trait
[INFO] [stdout] 10 |     fn getInfo(&self) -> String;
[INFO] [stdout] 11 |     fn getName(&self) -> String;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `getInfo` should have a snake case name
[INFO] [stdout]   --> src/main.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn getInfo(&self) -> String;
[INFO] [stdout]    |        ^^^^^^^ help: convert the identifier to snake case: `get_info`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `getName` should have a snake case name
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn getName(&self) -> String;
[INFO] [stdout]    |        ^^^^^^^ help: convert the identifier to snake case: `get_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `delete_ID` should have a snake case name
[INFO] [stdout]   --> src/main.rs:67:25
[INFO] [stdout]    |
[INFO] [stdout] 67 |                 let mut delete_ID = String::new();
[INFO] [stdout]    |                         ^^^^^^^^^ help: convert the identifier to snake case: `delete_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `update_ID` should have a snake case name
[INFO] [stdout]   --> src/main.rs:88:25
[INFO] [stdout]    |
[INFO] [stdout] 88 |                 let mut update_ID = String::new();
[INFO] [stdout]    |                         ^^^^^^^^^ help: convert the identifier to snake case: `update_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `update_ID_normalized` should have a snake case name
[INFO] [stdout]   --> src/main.rs:90:25
[INFO] [stdout]    |
[INFO] [stdout] 90 |                 let mut update_ID_normalized = update_ID.trim().to_lowercase();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `update_id_normalized`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "1b7af30dbab888423ffea12a1df162cb3d939b2dd81c1e022631bc1f070e5f27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b7af30dbab888423ffea12a1df162cb3d939b2dd81c1e022631bc1f070e5f27", kill_on_drop: false }`
[INFO] [stdout] 1b7af30dbab888423ffea12a1df162cb3d939b2dd81c1e022631bc1f070e5f27