[INFO] cloning repository https://github.com/dynamohuang/rust-learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dynamohuang/rust-learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdynamohuang%2Frust-learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdynamohuang%2Frust-learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bacd77eb4380a0b5f233491c2c8190c1d244f70f
[INFO] checking dynamohuang/rust-learn against master#8f21a5c92ea55c348c275a1bc4fedbdf181e0d64 for pr-143011
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdynamohuang%2Frust-learn" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dynamohuang/rust-learn
[INFO] finished tweaking git repo https://github.com/dynamohuang/rust-learn
[INFO] tweaked toml for git repo https://github.com/dynamohuang/rust-learn written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dynamohuang/rust-learn on toolchain 8f21a5c92ea55c348c275a1bc4fedbdf181e0d64
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dynamohuang/rust-learn 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" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 016b42dc8026ba66c2979df3694e04677d1852ec5eabb1b8d88f2f8978820d43
[INFO] running `Command { std: "docker" "start" "-a" "016b42dc8026ba66c2979df3694e04677d1852ec5eabb1b8d88f2f8978820d43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "016b42dc8026ba66c2979df3694e04677d1852ec5eabb1b8d88f2f8978820d43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "016b42dc8026ba66c2979df3694e04677d1852ec5eabb1b8d88f2f8978820d43", kill_on_drop: false }`
[INFO] [stdout] 016b42dc8026ba66c2979df3694e04677d1852ec5eabb1b8d88f2f8978820d43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7e71e77ee5e1cb12cb1a63b2b21c3feb0184f18b50627048d10297477a24033
[INFO] running `Command { std: "docker" "start" "-a" "e7e71e77ee5e1cb12cb1a63b2b21c3feb0184f18b50627048d10297477a24033", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `print_a_to_Z` should have a snake case name
[INFO] [stdout]  --> src/level1/mod.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn print_a_to_Z(){
[INFO] [stdout]   |        ^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `print_a_to_z`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_A_to_z` should have a snake case name
[INFO] [stdout]  --> src/level1/level2/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn print_A_to_z(){
[INFO] [stdout]   |        ^^^^^^^^^^^^ help: convert the identifier to snake case: `print_a_to_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_a_to_Z` should have a snake case name
[INFO] [stdout]  --> src/level1/mod.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn print_a_to_Z(){
[INFO] [stdout]   |        ^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `print_a_to_z`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_A_to_z` should have a snake case name
[INFO] [stdout]  --> src/level1/level2/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn print_A_to_z(){
[INFO] [stdout]   |        ^^^^^^^^^^^^ help: convert the identifier to snake case: `print_a_to_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "e7e71e77ee5e1cb12cb1a63b2b21c3feb0184f18b50627048d10297477a24033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7e71e77ee5e1cb12cb1a63b2b21c3feb0184f18b50627048d10297477a24033", kill_on_drop: false }`
[INFO] [stdout] e7e71e77ee5e1cb12cb1a63b2b21c3feb0184f18b50627048d10297477a24033