[INFO] cloning repository https://github.com/Lashi0812/OSinRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lashi0812/OSinRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLashi0812%2FOSinRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLashi0812%2FOSinRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fb9b5cc85f606cfe3344a0c0d4b2a9951eaf38e9
[INFO] checking Lashi0812/OSinRust against 1.95.0-beta.7 for beta-1.95-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLashi0812%2FOSinRust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Lashi0812/OSinRust
[INFO] finished tweaking git repo https://github.com/Lashi0812/OSinRust
[INFO] tweaked toml for git repo https://github.com/Lashi0812/OSinRust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Lashi0812/OSinRust on toolchain 1.95.0-beta.7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0-beta.7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Lashi0812/OSinRust 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" "+1.95.0-beta.7" "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 syn v2.0.82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0-beta.7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c90f8dc0f2833f75dd8c07726f99d7940c1cfb3ef2a781e1228c6d24ebfcdb76
[INFO] running `Command { std: "docker" "start" "-a" "c90f8dc0f2833f75dd8c07726f99d7940c1cfb3ef2a781e1228c6d24ebfcdb76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c90f8dc0f2833f75dd8c07726f99d7940c1cfb3ef2a781e1228c6d24ebfcdb76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c90f8dc0f2833f75dd8c07726f99d7940c1cfb3ef2a781e1228c6d24ebfcdb76", kill_on_drop: false }`
[INFO] [stdout] c90f8dc0f2833f75dd8c07726f99d7940c1cfb3ef2a781e1228c6d24ebfcdb76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0-beta.7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf421d2a20838490706cea73c6f947081835fdf3db41b09d1ef73630cfca3927
[INFO] running `Command { std: "docker" "start" "-a" "bf421d2a20838490706cea73c6f947081835fdf3db41b09d1ef73630cfca3927", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]     Checking ch_03a_simple_print_strace v0.1.0 (/opt/rustwide/workdir/ch_03a_simple_print_strace)
[INFO] [stderr]     Checking ch_02_stack v0.1.0 (/opt/rustwide/workdir/ch_02_stack)
[INFO] [stderr]     Checking ch_03_byte_write v0.1.0 (/opt/rustwide/workdir/ch_03_byte_write)
[INFO] [stderr]     Checking ch_06_thread_counter v0.1.0 (/opt/rustwide/workdir/ch_06_thread_counter)
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]   --> ch_02_stack/src/main.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 | fn f(depth: i32, bottom: usize) {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] ...
[INFO] [stdout] 12 |     f(depth + 1, bottom)
[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]   --> ch_02_stack/src/main.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout]  1 | fn f(depth: i32, bottom: usize) {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] ...
[INFO] [stdout] 12 |     f(depth + 1, bottom)
[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]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.82
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking ch_01_os_timing v0.1.0 (/opt/rustwide/workdir/ch_01_os_timing)
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ch_05_fork v0.1.0 (/opt/rustwide/workdir/ch_05_fork)
[INFO] [stderr]     Checking ch_04_signal v0.1.0 (/opt/rustwide/workdir/ch_04_signal)
[INFO] [stderr]     Checking ch_04_signal_logger v0.1.0 (/opt/rustwide/workdir/ch_04_signal_logger)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> ch_05_fork/src/main.rs:16:41
[INFO] [stdout]    |
[INFO] [stdout] 15 | /             execvp(&CString::new("ls").unwrap(), &[CString::new("ls").unwrap()])
[INFO] [stdout] 16 | |                 .expect("execlp failed");
[INFO] [stdout]    | |                                        -^ unreachable expression
[INFO] [stdout]    | |________________________________________|
[INFO] [stdout]    |                                          any code following this expression is unreachable
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `Infallible`, which is uninhabited
[INFO] [stdout]   --> ch_05_fork/src/main.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 | /             execvp(&CString::new("ls").unwrap(), &[CString::new("ls").unwrap()])
[INFO] [stdout] 16 | |                 .expect("execlp failed");
[INFO] [stdout]    | |________________________________________^
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> ch_05_fork/src/main.rs:16:41
[INFO] [stdout]    |
[INFO] [stdout] 15 | /             execvp(&CString::new("ls").unwrap(), &[CString::new("ls").unwrap()])
[INFO] [stdout] 16 | |                 .expect("execlp failed");
[INFO] [stdout]    | |                                        -^ unreachable expression
[INFO] [stdout]    | |________________________________________|
[INFO] [stdout]    |                                          any code following this expression is unreachable
[INFO] [stdout]    |
[INFO] [stdout] note: this expression has type `Infallible`, which is uninhabited
[INFO] [stdout]   --> ch_05_fork/src/main.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 | /             execvp(&CString::new("ls").unwrap(), &[CString::new("ls").unwrap()])
[INFO] [stdout] 16 | |                 .expect("execlp failed");
[INFO] [stdout]    | |________________________________________^
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking ch_07_thread_mutex v0.1.0 (/opt/rustwide/workdir/ch_07_thread_mutex)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.11s
[INFO] running `Command { std: "docker" "inspect" "bf421d2a20838490706cea73c6f947081835fdf3db41b09d1ef73630cfca3927", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf421d2a20838490706cea73c6f947081835fdf3db41b09d1ef73630cfca3927", kill_on_drop: false }`
[INFO] [stdout] bf421d2a20838490706cea73c6f947081835fdf3db41b09d1ef73630cfca3927
