[INFO] cloning repository https://github.com/mlafroce/concurrentes-2018
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mlafroce/concurrentes-2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmlafroce%2Fconcurrentes-2018", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmlafroce%2Fconcurrentes-2018'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71aad11a55ee4cd360686aeec04b1274f22cd1da
[INFO] checking mlafroce/concurrentes-2018 against beta-2021-10-15 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmlafroce%2Fconcurrentes-2018" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mlafroce/concurrentes-2018 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mlafroce/concurrentes-2018
[INFO] finished tweaking git repo https://github.com/mlafroce/concurrentes-2018
[INFO] tweaked toml for git repo https://github.com/mlafroce/concurrentes-2018 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mlafroce/concurrentes-2018 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitflags v1.0.4
[INFO] [stderr]   Downloaded pkg-config v0.3.14
[INFO] [stderr]   Downloaded ncurses v5.94.0
[INFO] [stderr]   Downloaded num-integer v0.1.39
[INFO] [stderr]   Downloaded time v0.1.40
[INFO] [stderr]   Downloaded cc v1.0.25
[INFO] [stderr]   Downloaded num-traits v0.2.6
[INFO] [stderr]   Downloaded getopts v0.2.18
[INFO] [stderr]   Downloaded chrono v0.4.6
[INFO] [stderr]   Downloaded libc v0.2.43
[INFO] [stderr]   Downloaded rand_core v0.2.1
[INFO] [stderr]   Downloaded rand v0.5.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e109c0b642400cd5fa82e5f4cc6c3b562fdbde118790c752b7b9a4c902c56c0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5e109c0b642400cd5fa82e5f4cc6c3b562fdbde118790c752b7b9a4c902c56c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e109c0b642400cd5fa82e5f4cc6c3b562fdbde118790c752b7b9a4c902c56c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e109c0b642400cd5fa82e5f4cc6c3b562fdbde118790c752b7b9a4c902c56c0", kill_on_drop: false }`
[INFO] [stdout] 5e109c0b642400cd5fa82e5f4cc6c3b562fdbde118790c752b7b9a4c902c56c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2dd1f86d1b20abfcf360018802269d702d2dcfb48bdae40bffe3c29473eb23f4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2dd1f86d1b20abfcf360018802269d702d2dcfb48bdae40bffe3c29473eb23f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling ncurses v5.94.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking concurrentes v0.1.0 (/opt/rustwide/workdir/conculib)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> conculib/src/signal.rs:46:28
[INFO] [stdout]    |
[INFO] [stdout] 46 |   handlers: Vec<Rc<RefCell<SignalHandler>>>
[INFO] [stdout]    |                            ^^^^^^^^^^^^^ help: use `dyn`: `dyn SignalHandler`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> conculib/src/signal.rs:52:52
[INFO] [stdout]    |
[INFO] [stdout] 52 |   pub fn register(signum: i32, handler: Rc<RefCell<SignalHandler>>) {
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn SignalHandler`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> conculib/src/signal.rs:64:37
[INFO] [stdout]    |
[INFO] [stdout] 64 |       let mut sa : sigaction = mem::uninitialized();
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> conculib/src/signal.rs:46:28
[INFO] [stdout]    |
[INFO] [stdout] 46 |   handlers: Vec<Rc<RefCell<SignalHandler>>>
[INFO] [stdout]    |                            ^^^^^^^^^^^^^ help: use `dyn`: `dyn SignalHandler`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> conculib/src/signal.rs:52:52
[INFO] [stdout]    |
[INFO] [stdout] 52 |   pub fn register(signum: i32, handler: Rc<RefCell<SignalHandler>>) {
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^ help: use `dyn`: `dyn SignalHandler`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> conculib/src/signal.rs:64:37
[INFO] [stdout]    |
[INFO] [stdout] 64 |       let mut sa : sigaction = mem::uninitialized();
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> conculib/examples/02-shared_memory.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let mut array_cell = shared_ints.get_array_mut();
[INFO] [stdout]    |             ----^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `shared_ints` as immutable because it is also borrowed as mutable
[INFO] [stdout]   --> conculib/examples/02-shared_memory.rs:41:36
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let mut array_cell = shared_ints.get_array_mut();
[INFO] [stdout]    |                              ----------- mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 41 |         println!("Child wrote {}", shared_ints.get_item(4));
[INFO] [stdout]    |                                    ^^^^^^^^^^^ immutable borrow occurs here
[INFO] [stdout] 42 |         println!("Item array: {:?}", shared_ints.get_array());
[INFO] [stdout] 43 |       }
[INFO] [stdout]    |       - mutable borrow might be used here, when `shared_array` is dropped and runs the destructor for type `RefMut<'_, &mut [i32]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0502]: cannot borrow `shared_ints` as immutable because it is also borrowed as mutable
[INFO] [stdout]   --> conculib/examples/02-shared_memory.rs:42:38
[INFO] [stdout]    |
[INFO] [stdout] 35 |         let mut array_cell = shared_ints.get_array_mut();
[INFO] [stdout]    |                              ----------- mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 42 |         println!("Item array: {:?}", shared_ints.get_array());
[INFO] [stdout]    |                                      ^^^^^^^^^^^ immutable borrow occurs here
[INFO] [stdout] 43 |       }
[INFO] [stdout]    |       - mutable borrow might be used here, when `shared_array` is dropped and runs the destructor for type `RefMut<'_, &mut [i32]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0502`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `concurrentes` due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2dd1f86d1b20abfcf360018802269d702d2dcfb48bdae40bffe3c29473eb23f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dd1f86d1b20abfcf360018802269d702d2dcfb48bdae40bffe3c29473eb23f4", kill_on_drop: false }`
[INFO] [stdout] 2dd1f86d1b20abfcf360018802269d702d2dcfb48bdae40bffe3c29473eb23f4
