[INFO] cloning repository https://github.com/42yeah/rust-book-impls
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/42yeah/rust-book-impls" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F42yeah%2Frust-book-impls", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F42yeah%2Frust-book-impls'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4e7f532c8fbfea3bc002200610071b035515aebd
[INFO] checking 42yeah/rust-book-impls against master#c8551d3c63c51f290cf1dc9dc4714249ea849fd1 for pr-148946
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F42yeah%2Frust-book-impls" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/42yeah/rust-book-impls
[INFO] finished tweaking git repo https://github.com/42yeah/rust-book-impls
[INFO] tweaked toml for git repo https://github.com/42yeah/rust-book-impls written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/42yeah/rust-book-impls on toolchain c8551d3c63c51f290cf1dc9dc4714249ea849fd1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/42yeah/rust-book-impls 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" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_core v0.6.2
[INFO] [stderr]   Downloaded rand v0.8.3
[INFO] [stderr]   Downloaded wasi v0.10.2+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded libc v0.2.94
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c373bdfc6d66f5adc79f4eac6995d8ef7a6229278929dfba9c5a0d17e844b830
[INFO] running `Command { std: "docker" "start" "-a" "c373bdfc6d66f5adc79f4eac6995d8ef7a6229278929dfba9c5a0d17e844b830", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c373bdfc6d66f5adc79f4eac6995d8ef7a6229278929dfba9c5a0d17e844b830", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c373bdfc6d66f5adc79f4eac6995d8ef7a6229278929dfba9c5a0d17e844b830", kill_on_drop: false }`
[INFO] [stdout] c373bdfc6d66f5adc79f4eac6995d8ef7a6229278929dfba9c5a0d17e844b830
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2afeacee47a4be27f1d441e3b8d2ff9e6198bbe351996f8d3f7e845f7d31c644
[INFO] running `Command { std: "docker" "start" "-a" "2afeacee47a4be27f1d441e3b8d2ff9e6198bbe351996f8d3f7e845f7d31c644", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking http-server v0.1.0 (/opt/rustwide/workdir/http-server)
[INFO] [stderr]     Checking ptr v0.1.0 (/opt/rustwide/workdir/ptr)
[INFO] [stderr]     Checking minigrep v0.1.0 (/opt/rustwide/workdir/minigrep)
[INFO] [stderr]     Checking adder v0.1.0 (/opt/rustwide/workdir/adder)
[INFO] [stderr]     Checking state-pattern v0.1.0 (/opt/rustwide/workdir/state-pattern)
[INFO] [stderr]     Checking playground v0.1.0 (/opt/rustwide/workdir/playground)
[INFO] [stderr]     Checking area v0.1.0 (/opt/rustwide/workdir/area)
[INFO] [stderr]     Checking concurrency v0.1.0 (/opt/rustwide/workdir/concurrency)
[INFO] [stderr]     Checking dangerous v0.1.0 (/opt/rustwide/workdir/dangerous)
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> playground/src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let v = vecky!(1; 2; 3);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `str`, which is not FFI-safe
[INFO] [stdout]  --> dangerous/src/main.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fn printf(fmt: &str);
[INFO] [stdout]   |                    ^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using `*const u8` and a length instead
[INFO] [stdout]   = note: string slices have no C equivalent
[INFO] [stdout]   = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]   --> dangerous/src/main.rs:11:32
[INFO] [stdout]    |
[INFO] [stdout] 11 |         println!("number: {}", NUMBER);
[INFO] [stdout]    |                                ^^^^^^ shared reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]    = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` block uses type `str`, which is not FFI-safe
[INFO] [stdout]  --> dangerous/src/main.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fn printf(fmt: &str);
[INFO] [stdout]   |                    ^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using `*const u8` and a length instead
[INFO] [stdout]   = note: string slices have no C equivalent
[INFO] [stdout]   = note: `#[warn(improper_ctypes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a shared reference to mutable static
[INFO] [stdout]   --> dangerous/src/main.rs:11:32
[INFO] [stdout]    |
[INFO] [stdout] 11 |         println!("number: {}", NUMBER);
[INFO] [stdout]    |                                ^^^^^^ shared reference to mutable static
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/static-mut-references.html>
[INFO] [stdout]    = note: shared references to mutable statics are dangerous; it's undefined behavior if the static is mutated or if a mutable reference is created for it while the shared reference lives
[INFO] [stdout]    = note: `#[warn(static_mut_refs)]` (part of `#[warn(rust_2024_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking pig-latin v0.1.0 (/opt/rustwide/workdir/pig-latin)
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> playground/src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let v = vecky!(1; 2; 3);
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `data` and `children` are never read
[INFO] [stdout]    --> ptr/src/lib.rs:101:13
[INFO] [stdout]     |
[INFO] [stdout] 100 |         struct Node {
[INFO] [stdout]     |                ---- fields in this struct
[INFO] [stdout] 101 |             data: i32,
[INFO] [stdout]     |             ^^^^
[INFO] [stdout] 102 |             children: RefCell<Vec<Rc<Node>>>,
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Node` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking guessing-game v0.1.0 (/opt/rustwide/workdir/guessing-game)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "2afeacee47a4be27f1d441e3b8d2ff9e6198bbe351996f8d3f7e845f7d31c644", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2afeacee47a4be27f1d441e3b8d2ff9e6198bbe351996f8d3f7e845f7d31c644", kill_on_drop: false }`
[INFO] [stdout] 2afeacee47a4be27f1d441e3b8d2ff9e6198bbe351996f8d3f7e845f7d31c644
