[INFO] fetching crate ngnk 0.2.3...
[INFO] testing ngnk-0.2.3 against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759
[INFO] extracting crate ngnk 0.2.3 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate ngnk 0.2.3
[INFO] finished tweaking crates.io crate ngnk 0.2.3
[INFO] tweaked toml for crates.io crate ngnk 0.2.3 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ngnk 0.2.3 on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 46 packages to latest compatible versions
[INFO] [stderr]       Adding bindgen v0.65.1 (available: v0.72.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 39bcb00919378a41fac272b99390cac0967156c20522c5aa03353cf50126b892
[INFO] running `Command { std: "docker" "start" "-a" "39bcb00919378a41fac272b99390cac0967156c20522c5aa03353cf50126b892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39bcb00919378a41fac272b99390cac0967156c20522c5aa03353cf50126b892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39bcb00919378a41fac272b99390cac0967156c20522c5aa03353cf50126b892", kill_on_drop: false }`
[INFO] [stdout] 39bcb00919378a41fac272b99390cac0967156c20522c5aa03353cf50126b892
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a67c55f4f5ad71b062468d295906e2cd61d254ec10569bca26f3bafb69bb91c
[INFO] running `Command { std: "docker" "start" "-a" "7a67c55f4f5ad71b062468d295906e2cd61d254ec10569bca26f3bafb69bb91c", kill_on_drop: false }`
[INFO] [stderr]    Compiling ngnk v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a dangling pointer will be produced because the temporary `Vec<i8>` will be dropped
[INFO] [stdout]   --> src/lib.rs:32:34
[INFO] [stdout]    |
[INFO] [stdout] 32 |     unsafe{ let b:*mut i8=vec![].as_mut_ptr();raw::CK(b,a);
[INFO] [stdout]    |                           ------ ^^^^^^^^^^ this pointer will immediately be invalid
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           this `Vec<i8>` 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_mut_ptr` the `Vec<i8>` 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 `Vec<i8>` to lives at least as long as the pointer returned by the call to `as_mut_ptr`
[INFO] [stdout]    = help: in particular, if this pointer is returned from the current function, binding the `Vec<i8>` inside the function will not suffice
[INFO] [stdout]    = help: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[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 2.95s
[INFO] running `Command { std: "docker" "inspect" "7a67c55f4f5ad71b062468d295906e2cd61d254ec10569bca26f3bafb69bb91c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a67c55f4f5ad71b062468d295906e2cd61d254ec10569bca26f3bafb69bb91c", kill_on_drop: false }`
[INFO] [stdout] 7a67c55f4f5ad71b062468d295906e2cd61d254ec10569bca26f3bafb69bb91c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0227e169d12d40a543a84e60085fadf2a34be6993c0b0f8abcf0f2ccf20aaafa
[INFO] running `Command { std: "docker" "start" "-a" "0227e169d12d40a543a84e60085fadf2a34be6993c0b0f8abcf0f2ccf20aaafa", kill_on_drop: false }`
[INFO] [stdout] warning: a dangling pointer will be produced because the temporary `Vec<i8>` will be dropped
[INFO] [stdout]   --> src/lib.rs:32:34
[INFO] [stdout]    |
[INFO] [stdout] 32 |     unsafe{ let b:*mut i8=vec![].as_mut_ptr();raw::CK(b,a);
[INFO] [stdout]    |                           ------ ^^^^^^^^^^ this pointer will immediately be invalid
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           this `Vec<i8>` 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_mut_ptr` the `Vec<i8>` 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 `Vec<i8>` to lives at least as long as the pointer returned by the call to `as_mut_ptr`
[INFO] [stdout]    = help: in particular, if this pointer is returned from the current function, binding the `Vec<i8>` inside the function will not suffice
[INFO] [stdout]    = help: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stdout]    = note: `#[warn(dangling_pointers_from_temporaries)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ngnk v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: a dangling pointer will be produced because the temporary `Vec<i8>` will be dropped
[INFO] [stdout]   --> src/lib.rs:32:34
[INFO] [stdout]    |
[INFO] [stdout] 32 |     unsafe{ let b:*mut i8=vec![].as_mut_ptr();raw::CK(b,a);
[INFO] [stdout]    |                           ------ ^^^^^^^^^^ this pointer will immediately be invalid
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           this `Vec<i8>` 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_mut_ptr` the `Vec<i8>` 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 `Vec<i8>` to lives at least as long as the pointer returned by the call to `as_mut_ptr`
[INFO] [stdout]    = help: in particular, if this pointer is returned from the current function, binding the `Vec<i8>` inside the function will not suffice
[INFO] [stdout]    = help: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stdout]    = note: `#[warn(dangling_pointers_from_temporaries)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "0227e169d12d40a543a84e60085fadf2a34be6993c0b0f8abcf0f2ccf20aaafa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0227e169d12d40a543a84e60085fadf2a34be6993c0b0f8abcf0f2ccf20aaafa", kill_on_drop: false }`
[INFO] [stdout] 0227e169d12d40a543a84e60085fadf2a34be6993c0b0f8abcf0f2ccf20aaafa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d107cd554034daef6727f6837bb75657468c10264f90cc30b36969e49e9eff3e
[INFO] running `Command { std: "docker" "start" "-a" "d107cd554034daef6727f6837bb75657468c10264f90cc30b36969e49e9eff3e", kill_on_drop: false }`
[INFO] [stderr] warning: a dangling pointer will be produced because the temporary `Vec<i8>` will be dropped
[INFO] [stderr]   --> src/lib.rs:32:34
[INFO] [stderr]    |
[INFO] [stderr] 32 |     unsafe{ let b:*mut i8=vec![].as_mut_ptr();raw::CK(b,a);
[INFO] [stderr]    |                           ------ ^^^^^^^^^^ this pointer will immediately be invalid
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           this `Vec<i8>` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
[INFO] [stderr]    |
[INFO] [stderr]    = note: pointers do not have a lifetime; when calling `as_mut_ptr` the `Vec<i8>` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
[INFO] [stderr]    = help: you must make sure that the variable you bind the `Vec<i8>` to lives at least as long as the pointer returned by the call to `as_mut_ptr`
[INFO] [stderr]    = help: in particular, if this pointer is returned from the current function, binding the `Vec<i8>` inside the function will not suffice
[INFO] [stderr]    = help: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
[INFO] [stderr]    = note: `#[warn(dangling_pointers_from_temporaries)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ngnk` (lib) generated 1 warning
[INFO] [stderr] warning: `ngnk` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ngnk-5c42fcabd3bf10cf)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/ngnk-5c42fcabd3bf10cf` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "d107cd554034daef6727f6837bb75657468c10264f90cc30b36969e49e9eff3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d107cd554034daef6727f6837bb75657468c10264f90cc30b36969e49e9eff3e", kill_on_drop: false }`
[INFO] [stdout] d107cd554034daef6727f6837bb75657468c10264f90cc30b36969e49e9eff3e
