[INFO] cloning repository https://github.com/george-lim/pool-allocator [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/george-lim/pool-allocator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeorge-lim%2Fpool-allocator", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeorge-lim%2Fpool-allocator'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5c2d952d5917478aa6d0601d04942b0d68c4f3ed [INFO] checking george-lim/pool-allocator against try#0fe3684930279e4d3be3aca66b30f82946ce9ac2 for pr-138340 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeorge-lim%2Fpool-allocator" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/george-lim/pool-allocator on toolchain 0fe3684930279e4d3be3aca66b30f82946ce9ac2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0fe3684930279e4d3be3aca66b30f82946ce9ac2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/george-lim/pool-allocator [INFO] finished tweaking git repo https://github.com/george-lim/pool-allocator [INFO] tweaked toml for git repo https://github.com/george-lim/pool-allocator written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/george-lim/pool-allocator 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" "+0fe3684930279e4d3be3aca66b30f82946ce9ac2" "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] 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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+0fe3684930279e4d3be3aca66b30f82946ce9ac2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6fd643c63706eaf44c44dce26c9b36f3225bf1485ba556882a4059f81f8be3e6 [INFO] running `Command { std: "docker" "start" "-a" "6fd643c63706eaf44c44dce26c9b36f3225bf1485ba556882a4059f81f8be3e6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6fd643c63706eaf44c44dce26c9b36f3225bf1485ba556882a4059f81f8be3e6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6fd643c63706eaf44c44dce26c9b36f3225bf1485ba556882a4059f81f8be3e6", kill_on_drop: false }` [INFO] [stdout] 6fd643c63706eaf44c44dce26c9b36f3225bf1485ba556882a4059f81f8be3e6 [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=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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+0fe3684930279e4d3be3aca66b30f82946ce9ac2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 473556dce795dc4c1da6df35b11c408e2ce35dc1e2e882c49ec3c92e3c20f95b [INFO] running `Command { std: "docker" "start" "-a" "473556dce795dc4c1da6df35b11c408e2ce35dc1e2e882c49ec3c92e3c20f95b", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.155 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Checking ordered-pool-allocator v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `[u8; 8]` will be dropped [INFO] [stdout] --> src/lib.rs:210:56 [INFO] [stdout] | [INFO] [stdout] 210 | unsafe { return *block_index.to_le_bytes().as_ptr().cast() } [INFO] [stdout] | ------------------------- ^^^^^^ this pointer will immediately be invalid [INFO] [stdout] | | [INFO] [stdout] | this `[u8; 8]` 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 `[u8; 8]` 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: you must make sure that the variable you bind the `[u8; 8]` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `[u8; 8]` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] = note: `#[warn(dangling_pointers_from_temporaries)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking getrandom v0.2.15 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stdout] warning: a dangling pointer will be produced because the temporary `[u8; 8]` will be dropped [INFO] [stdout] --> src/lib.rs:210:56 [INFO] [stdout] | [INFO] [stdout] 210 | unsafe { return *block_index.to_le_bytes().as_ptr().cast() } [INFO] [stdout] | ------------------------- ^^^^^^ this pointer will immediately be invalid [INFO] [stdout] | | [INFO] [stdout] | this `[u8; 8]` 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 `[u8; 8]` 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: you must make sure that the variable you bind the `[u8; 8]` to lives at least as long as the pointer returned by the call to `as_ptr` [INFO] [stdout] = help: in particular, if this pointer is returned from the current function, binding the `[u8; 8]` inside the function will not suffice [INFO] [stdout] = help: for more information, see [INFO] [stdout] = note: `#[warn(dangling_pointers_from_temporaries)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.30s [INFO] running `Command { std: "docker" "inspect" "473556dce795dc4c1da6df35b11c408e2ce35dc1e2e882c49ec3c92e3c20f95b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "473556dce795dc4c1da6df35b11c408e2ce35dc1e2e882c49ec3c92e3c20f95b", kill_on_drop: false }` [INFO] [stdout] 473556dce795dc4c1da6df35b11c408e2ce35dc1e2e882c49ec3c92e3c20f95b