[INFO] fetching crate rurust 0.1.11...
[INFO] checking rurust-0.1.11 against try#55b3f428b4fac6790b1e8492e0b91ff2d80aec7c for pr-77035
[INFO] extracting crate rurust 0.1.11 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate rurust 0.1.11 on toolchain 55b3f428b4fac6790b1e8492e0b91ff2d80aec7c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rurust 0.1.11
[INFO] finished tweaking crates.io crate rurust 0.1.11
[INFO] tweaked toml for crates.io crate rurust 0.1.11 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mri-sys v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59fcb081789e252773c086b8dcea25dbc5b0ba59cb0eccda5a33bebd7946500e
[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" "59fcb081789e252773c086b8dcea25dbc5b0ba59cb0eccda5a33bebd7946500e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59fcb081789e252773c086b8dcea25dbc5b0ba59cb0eccda5a33bebd7946500e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59fcb081789e252773c086b8dcea25dbc5b0ba59cb0eccda5a33bebd7946500e", kill_on_drop: false }`
[INFO] [stdout] 59fcb081789e252773c086b8dcea25dbc5b0ba59cb0eccda5a33bebd7946500e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a623bd7c762223d35be7236b0fb31df28916e0b047fc87e012f072861d06ab85
[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" "a623bd7c762223d35be7236b0fb31df28916e0b047fc87e012f072861d06ab85", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]    Compiling mri-sys v0.2.4
[INFO] [stderr]     Checking rurust v0.1.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/vm.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | / lazy_static! {
[INFO] [stdout] 20 | |     static ref ACTIVE_VM: Mutex<VM> = Mutex::new(VM::new().expect("failed to create Ruby VM"));
[INFO] [stdout] 21 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/vm.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | / lazy_static! {
[INFO] [stdout] 20 | |     static ref ACTIVE_VM: Mutex<VM> = Mutex::new(VM::new().expect("failed to create Ruby VM"));
[INFO] [stdout] 21 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0624]: associated function `new` is private
[INFO] [stdout]  --> src/test.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut vm = VM::new().unwrap();
[INFO] [stdout]   |                      ^^^ private associated function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0624`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rurust`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: `extern` fn uses type `Value`, which is not FFI-safe
[INFO] [stdout]  --> tools/repl.rs:7:31
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub extern fn thing(self_obj: rurust::Value, num: rurust::Value) -> rurust::Value {
[INFO] [stdout]   |                               ^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]   = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Value`, which is not FFI-safe
[INFO] [stdout]  --> tools/repl.rs:7:51
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub extern fn thing(self_obj: rurust::Value, num: rurust::Value) -> rurust::Value {
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]   = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Value`, which is not FFI-safe
[INFO] [stdout]  --> tools/repl.rs:7:69
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub extern fn thing(self_obj: rurust::Value, num: rurust::Value) -> rurust::Value {
[INFO] [stdout]   |                                                                     ^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]   = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Value`, which is not FFI-safe
[INFO] [stdout]  --> tools/repl.rs:7:31
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub extern fn thing(self_obj: rurust::Value, num: rurust::Value) -> rurust::Value {
[INFO] [stdout]   |                               ^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]   = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Value`, which is not FFI-safe
[INFO] [stdout]  --> tools/repl.rs:7:51
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub extern fn thing(self_obj: rurust::Value, num: rurust::Value) -> rurust::Value {
[INFO] [stdout]   |                                                   ^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]   = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `Value`, which is not FFI-safe
[INFO] [stdout]  --> tools/repl.rs:7:69
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub extern fn thing(self_obj: rurust::Value, num: rurust::Value) -> rurust::Value {
[INFO] [stdout]   |                                                                     ^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stdout]   = note: this struct has unspecified layout
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a623bd7c762223d35be7236b0fb31df28916e0b047fc87e012f072861d06ab85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a623bd7c762223d35be7236b0fb31df28916e0b047fc87e012f072861d06ab85", kill_on_drop: false }`
[INFO] [stdout] a623bd7c762223d35be7236b0fb31df28916e0b047fc87e012f072861d06ab85