[INFO] cloning repository https://github.com/Idolf/syscall-challenge [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Idolf/syscall-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIdolf%2Fsyscall-challenge", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIdolf%2Fsyscall-challenge'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ec63f361e67560791d5209106eeac6ea40df8023 [INFO] checking Idolf/syscall-challenge against master#b359ccf1b0b7b2d2c1c4932344b806e68bd053a9 for pr-105483 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIdolf%2Fsyscall-challenge" "/workspace/builds/worker-5/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Idolf/syscall-challenge on toolchain b359ccf1b0b7b2d2c1c4932344b806e68bd053a9 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b359ccf1b0b7b2d2c1c4932344b806e68bd053a9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Idolf/syscall-challenge [INFO] finished tweaking git repo https://github.com/Idolf/syscall-challenge [INFO] tweaked toml for git repo https://github.com/Idolf/syscall-challenge written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/Idolf/syscall-challenge already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b359ccf1b0b7b2d2c1c4932344b806e68bd053a9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating git repository `https://github.com/Idolf/nix.git` [INFO] [stderr] Updating git repository `https://github.com/rust-lang/libc` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded lazy_static v0.2.2 [INFO] [stderr] Downloaded cfg-if v0.1.0 [INFO] [stderr] Downloaded bincode v0.6.1 [INFO] [stderr] Downloaded ipc-channel v0.6.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+b359ccf1b0b7b2d2c1c4932344b806e68bd053a9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0e037679a438acaf7ca8025a3502604462f08a230a6e79d15586ff65397a7ff7 [INFO] running `Command { std: "docker" "start" "-a" "0e037679a438acaf7ca8025a3502604462f08a230a6e79d15586ff65397a7ff7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0e037679a438acaf7ca8025a3502604462f08a230a6e79d15586ff65397a7ff7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0e037679a438acaf7ca8025a3502604462f08a230a6e79d15586ff65397a7ff7", kill_on_drop: false }` [INFO] [stdout] 0e037679a438acaf7ca8025a3502604462f08a230a6e79d15586ff65397a7ff7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+b359ccf1b0b7b2d2c1c4932344b806e68bd053a9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f9557fea1358349ab339147fc98fd3054a8564174470f29a0480426dc6d55946 [INFO] running `Command { std: "docker" "start" "-a" "f9557fea1358349ab339147fc98fd3054a8564174470f29a0480426dc6d55946", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.20 [INFO] [stderr] Checking num-traits v0.1.36 [INFO] [stderr] Checking byteorder v1.0.0 [INFO] [stderr] Checking serde v0.8.23 [INFO] [stderr] Checking rustc-serialize v0.3.22 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking cfg-if v0.1.0 [INFO] [stderr] Checking bitflags v0.4.0 [INFO] [stderr] Checking libc v0.2.20 (https://github.com/rust-lang/libc#bce927b3) [INFO] [stderr] Checking lazy_static v0.2.2 [INFO] [stderr] Checking rand v0.3.15 [INFO] [stderr] Checking nix v0.8.0 (https://github.com/Idolf/nix.git?branch=ptrace-stuff#65f0d512) [INFO] [stderr] Checking uuid v0.3.1 [INFO] [stderr] Checking bincode v0.6.1 [INFO] [stderr] Checking ipc-channel v0.6.0 [INFO] [stderr] Checking syscall-challenge v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: getting the inner pointer of a temporary `CString` [INFO] [stdout] --> src/main.rs:95:69 [INFO] [stdout] | [INFO] [stdout] 95 | assert!(unsafe { libc::rmdir(CString::new("/old_root").unwrap().as_ptr()) } == 0); [INFO] [stdout] | ---------------------------------- ^^^^^^ this pointer will be invalid [INFO] [stdout] | | [INFO] [stdout] | this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime [INFO] [stdout] | [INFO] [stdout] = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned [INFO] [stdout] = help: for more information, see https://doc.rust-lang.org/reference/destructors.html [INFO] [stdout] = note: `#[warn(temporary_cstring_as_ptr)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: getting the inner pointer of a temporary `CString` [INFO] [stdout] --> src/main.rs:95:69 [INFO] [stdout] | [INFO] [stdout] 95 | assert!(unsafe { libc::rmdir(CString::new("/old_root").unwrap().as_ptr()) } == 0); [INFO] [stdout] | ---------------------------------- ^^^^^^ this pointer will be invalid [INFO] [stdout] | | [INFO] [stdout] | this `CString` is deallocated at the end of the statement, bind it to a variable to extend its lifetime [INFO] [stdout] | [INFO] [stdout] = note: pointers do not have a lifetime; when calling `as_ptr` the `CString` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned [INFO] [stdout] = help: for more information, see https://doc.rust-lang.org/reference/destructors.html [INFO] [stdout] = note: `#[warn(temporary_cstring_as_ptr)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.12s [INFO] running `Command { std: "docker" "inspect" "f9557fea1358349ab339147fc98fd3054a8564174470f29a0480426dc6d55946", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f9557fea1358349ab339147fc98fd3054a8564174470f29a0480426dc6d55946", kill_on_drop: false }` [INFO] [stdout] f9557fea1358349ab339147fc98fd3054a8564174470f29a0480426dc6d55946