[INFO] cloning repository https://github.com/kgish/rust-ffi-sqrt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kgish/rust-ffi-sqrt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkgish%2Frust-ffi-sqrt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkgish%2Frust-ffi-sqrt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9aa62d1cc1dc1a302fd730ce496e6715b442cd31
[INFO] testing kgish/rust-ffi-sqrt against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkgish%2Frust-ffi-sqrt" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kgish/rust-ffi-sqrt
[INFO] finished tweaking git repo https://github.com/kgish/rust-ffi-sqrt
[INFO] tweaked toml for git repo https://github.com/kgish/rust-ffi-sqrt written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kgish/rust-ffi-sqrt on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kgish/rust-ffi-sqrt 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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f60ecc97ca5acfed3038b0755d63abab9c4d7262714d24266026016021f56dd7
[INFO] running `Command { std: "docker" "start" "-a" "f60ecc97ca5acfed3038b0755d63abab9c4d7262714d24266026016021f56dd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f60ecc97ca5acfed3038b0755d63abab9c4d7262714d24266026016021f56dd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f60ecc97ca5acfed3038b0755d63abab9c4d7262714d24266026016021f56dd7", kill_on_drop: false }`
[INFO] [stdout] f60ecc97ca5acfed3038b0755d63abab9c4d7262714d24266026016021f56dd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50adc3e1376e78f476f83a2e73a399cca7493d30c5a5f344e15ed1c93074f356
[INFO] running `Command { std: "docker" "start" "-a" "50adc3e1376e78f476f83a2e73a399cca7493d30c5a5f344e15ed1c93074f356", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-ffi-sqrt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: attribute should be applied to an `extern` block with non-Rust ABI
[INFO] [stdout]   --> src/main.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout]  5 |   #[link(name = "m")]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  6 | / fn main() {
[INFO] [stdout]  7 | |
[INFO] [stdout]  8 | |     let x: f64 = 2.;
[INFO] [stdout]  9 | |     let result: f64 = unsafe { sqrt(x) };
[INFO] [stdout] 10 | |
[INFO] [stdout] 11 | |     println!("The square root of {} is {}", x, result);
[INFO] [stdout] 12 | | }
[INFO] [stdout]    | |_- not an `extern` block
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "50adc3e1376e78f476f83a2e73a399cca7493d30c5a5f344e15ed1c93074f356", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50adc3e1376e78f476f83a2e73a399cca7493d30c5a5f344e15ed1c93074f356", kill_on_drop: false }`
[INFO] [stdout] 50adc3e1376e78f476f83a2e73a399cca7493d30c5a5f344e15ed1c93074f356
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91796fc83eb883166542eb949a7a53d9249e79fe68c35212c2091af71d5b95e7
[INFO] running `Command { std: "docker" "start" "-a" "91796fc83eb883166542eb949a7a53d9249e79fe68c35212c2091af71d5b95e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-ffi-sqrt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: attribute should be applied to an `extern` block with non-Rust ABI
[INFO] [stdout]   --> src/main.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout]  5 |   #[link(name = "m")]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  6 | / fn main() {
[INFO] [stdout]  7 | |
[INFO] [stdout]  8 | |     let x: f64 = 2.;
[INFO] [stdout]  9 | |     let result: f64 = unsafe { sqrt(x) };
[INFO] [stdout] 10 | |
[INFO] [stdout] 11 | |     println!("The square root of {} is {}", x, result);
[INFO] [stdout] 12 | | }
[INFO] [stdout]    | |_- not an `extern` block
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "91796fc83eb883166542eb949a7a53d9249e79fe68c35212c2091af71d5b95e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91796fc83eb883166542eb949a7a53d9249e79fe68c35212c2091af71d5b95e7", kill_on_drop: false }`
[INFO] [stdout] 91796fc83eb883166542eb949a7a53d9249e79fe68c35212c2091af71d5b95e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3884fc5ad5faa8e1dfa4c5b1138da0e13b3313ce31cf9224aa5e719918e311b3
[INFO] running `Command { std: "docker" "start" "-a" "3884fc5ad5faa8e1dfa4c5b1138da0e13b3313ce31cf9224aa5e719918e311b3", kill_on_drop: false }`
[INFO] [stderr] warning: attribute should be applied to an `extern` block with non-Rust ABI
[INFO] [stderr]   --> src/main.rs:5:1
[INFO] [stderr]    |
[INFO] [stderr]  5 |   #[link(name = "m")]
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]  6 | / fn main() {
[INFO] [stderr]  7 | |
[INFO] [stderr]  8 | |     let x: f64 = 2.;
[INFO] [stderr]  9 | |     let result: f64 = unsafe { sqrt(x) };
[INFO] [stderr] 10 | |
[INFO] [stderr] 11 | |     println!("The square root of {} is {}", x, result);
[INFO] [stderr] 12 | | }
[INFO] [stderr]    | |_- not an `extern` block
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-ffi-sqrt` (bin "rust-ffi-sqrt" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_ffi_sqrt-b679e05e9fe568e8)
[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" "3884fc5ad5faa8e1dfa4c5b1138da0e13b3313ce31cf9224aa5e719918e311b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3884fc5ad5faa8e1dfa4c5b1138da0e13b3313ce31cf9224aa5e719918e311b3", kill_on_drop: false }`
[INFO] [stdout] 3884fc5ad5faa8e1dfa4c5b1138da0e13b3313ce31cf9224aa5e719918e311b3