[INFO] cloning repository https://github.com/kjvalencik/hello-rust-js
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kjvalencik/hello-rust-js" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkjvalencik%2Fhello-rust-js", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkjvalencik%2Fhello-rust-js'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c00f116862c3c2d26a5bfcf5101004dfe0b8e8c
[INFO] testing kjvalencik/hello-rust-js against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkjvalencik%2Fhello-rust-js" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kjvalencik/hello-rust-js on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kjvalencik/hello-rust-js
[INFO] finished tweaking git repo https://github.com/kjvalencik/hello-rust-js
[INFO] tweaked toml for git repo https://github.com/kjvalencik/hello-rust-js written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/kjvalencik/hello-rust-js already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c449164c717d64b1465d2ba06efde20c90ba99b06cf64a37bab67e243f451081
[INFO] running `Command { std: "docker" "start" "-a" "c449164c717d64b1465d2ba06efde20c90ba99b06cf64a37bab67e243f451081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c449164c717d64b1465d2ba06efde20c90ba99b06cf64a37bab67e243f451081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c449164c717d64b1465d2ba06efde20c90ba99b06cf64a37bab67e243f451081", kill_on_drop: false }`
[INFO] [stdout] c449164c717d64b1465d2ba06efde20c90ba99b06cf64a37bab67e243f451081
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b938ed1c2bf74c43e271b658935bf829ab18662e2395c279c98ffab81d8d23f
[INFO] running `Command { std: "docker" "start" "-a" "6b938ed1c2bf74c43e271b658935bf829ab18662e2395c279c98ffab81d8d23f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.4
[INFO] [stderr]    Compiling hello-rust-js v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `CString`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:35:72
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub extern fn greeter_hello(ptr: *mut Greeter, name: *const c_char) -> CString {
[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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6b938ed1c2bf74c43e271b658935bf829ab18662e2395c279c98ffab81d8d23f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b938ed1c2bf74c43e271b658935bf829ab18662e2395c279c98ffab81d8d23f", kill_on_drop: false }`
[INFO] [stdout] 6b938ed1c2bf74c43e271b658935bf829ab18662e2395c279c98ffab81d8d23f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8a3d24189615c3f2e35f2ccc56c9629c9fe519d05009d9ddfe5ac0fe1058593
[INFO] running `Command { std: "docker" "start" "-a" "d8a3d24189615c3f2e35f2ccc56c9629c9fe519d05009d9ddfe5ac0fe1058593", kill_on_drop: false }`
[INFO] [stderr]    Compiling hello-rust-js v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `CString`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:35:72
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub extern fn greeter_hello(ptr: *mut Greeter, name: *const c_char) -> CString {
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `CString`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:35:72
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub extern fn greeter_hello(ptr: *mut Greeter, name: *const c_char) -> CString {
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "d8a3d24189615c3f2e35f2ccc56c9629c9fe519d05009d9ddfe5ac0fe1058593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8a3d24189615c3f2e35f2ccc56c9629c9fe519d05009d9ddfe5ac0fe1058593", kill_on_drop: false }`
[INFO] [stdout] d8a3d24189615c3f2e35f2ccc56c9629c9fe519d05009d9ddfe5ac0fe1058593
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cc96de067b22466ad17a988a342e6eec5ba6f7c3e806896599ff9967049ae613
[INFO] running `Command { std: "docker" "start" "-a" "cc96de067b22466ad17a988a342e6eec5ba6f7c3e806896599ff9967049ae613", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: `extern` fn uses type `CString`, which is not FFI-safe
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/lib.rs:35:72
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 35 | pub extern fn greeter_hello(ptr: *mut Greeter, name: *const c_char) -> CString {
[INFO] [stdout] 
[INFO] [stderr]    |                                                                        ^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr]    = note: this struct has unspecified layout
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `CString`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:35:72
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub extern fn greeter_hello(ptr: *mut Greeter, name: *const c_char) -> CString {
[INFO] [stderr]    |                                                                        ^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stderr]    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
[INFO] [stderr]    = note: this struct has unspecified layout
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hello_rust_js-b25c2f3ac299ff9c)
[INFO] [stderr]    Doc-tests hello-rust-js
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cc96de067b22466ad17a988a342e6eec5ba6f7c3e806896599ff9967049ae613", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc96de067b22466ad17a988a342e6eec5ba6f7c3e806896599ff9967049ae613", kill_on_drop: false }`
[INFO] [stdout] cc96de067b22466ad17a988a342e6eec5ba6f7c3e806896599ff9967049ae613