[INFO] cloning repository https://github.com/f-a24/math-algorithm-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/f-a24/math-algorithm-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ff-a24%2Fmath-algorithm-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ff-a24%2Fmath-algorithm-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1eeb5a1b3c0cc24c156df8b2c890029d53c2c6d4
[INFO] checking f-a24/math-algorithm-rust against try#44e31dee3cf6f37b4f652572897bb0eb25c477ee for pr-139763
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ff-a24%2Fmath-algorithm-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/f-a24/math-algorithm-rust on toolchain 44e31dee3cf6f37b4f652572897bb0eb25c477ee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/f-a24/math-algorithm-rust
[INFO] finished tweaking git repo https://github.com/f-a24/math-algorithm-rust
[INFO] tweaked toml for git repo https://github.com/f-a24/math-algorithm-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/f-a24/math-algorithm-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" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proconio v0.3.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91398c2928059e4ed9beeaada4d2bc1c92b0833f619e82673b69d30fb0dd00a9
[INFO] running `Command { std: "docker" "start" "-a" "91398c2928059e4ed9beeaada4d2bc1c92b0833f619e82673b69d30fb0dd00a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91398c2928059e4ed9beeaada4d2bc1c92b0833f619e82673b69d30fb0dd00a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91398c2928059e4ed9beeaada4d2bc1c92b0833f619e82673b69d30fb0dd00a9", kill_on_drop: false }`
[INFO] [stdout] 91398c2928059e4ed9beeaada4d2bc1c92b0833f619e82673b69d30fb0dd00a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+44e31dee3cf6f37b4f652572897bb0eb25c477ee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 030c621d9e6096d09ca7e6e7fb18378479cd6159d36fd226a9e2a0612f3884c7
[INFO] running `Command { std: "docker" "start" "-a" "030c621d9e6096d09ca7e6e7fb18378479cd6159d36fd226a9e2a0612f3884c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking proconio v0.3.8
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking math-algorithm-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/chapter3/codes/code06_6.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | fn func(n: i32) -> i32 {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 10 |     func(n - 1) * n
[INFO] [stdout]    |     ----------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> src/chapter3/codes/code06_6.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | fn func(n: i32) -> i32 {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] 10 |     func(n - 1) * n
[INFO] [stdout]    |     ----------- recursive call site
[INFO] [stdout]    |
[INFO] [stdout]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.74s
[INFO] running `Command { std: "docker" "inspect" "030c621d9e6096d09ca7e6e7fb18378479cd6159d36fd226a9e2a0612f3884c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "030c621d9e6096d09ca7e6e7fb18378479cd6159d36fd226a9e2a0612f3884c7", kill_on_drop: false }`
[INFO] [stdout] 030c621d9e6096d09ca7e6e7fb18378479cd6159d36fd226a9e2a0612f3884c7