[INFO] fetching crate t_bang 0.1.4...
[INFO] testing t_bang-0.1.4 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate t_bang 0.1.4 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate t_bang 0.1.4 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 crates.io crate t_bang 0.1.4
[INFO] finished tweaking crates.io crate t_bang 0.1.4
[INFO] tweaked toml for crates.io crate t_bang 0.1.4 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 49ddb2f14bd0317b18808f3fe7ec5c06f6395c7152f6eacbbe733946d510ae32
[INFO] running `Command { std: "docker" "start" "-a" "49ddb2f14bd0317b18808f3fe7ec5c06f6395c7152f6eacbbe733946d510ae32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49ddb2f14bd0317b18808f3fe7ec5c06f6395c7152f6eacbbe733946d510ae32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49ddb2f14bd0317b18808f3fe7ec5c06f6395c7152f6eacbbe733946d510ae32", kill_on_drop: false }`
[INFO] [stdout] 49ddb2f14bd0317b18808f3fe7ec5c06f6395c7152f6eacbbe733946d510ae32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] cfe99bedf7531b362ca908927d297c9aeda22b5cf531aa55157bf244d5af5134
[INFO] running `Command { std: "docker" "start" "-a" "cfe99bedf7531b362ca908927d297c9aeda22b5cf531aa55157bf244d5af5134", kill_on_drop: false }`
[INFO] [stderr]    Compiling t_bang v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   unsafe { std::intrinsics::type_name::<T>() }
[INFO] [stdout]    |   ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:15:39
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub extern fn type_of<'a, T>(_: T) -> &'a str {
[INFO] [stdout]    |                                       ^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]    = help: consider using `*const u8` and a length instead
[INFO] [stdout]    = note: string slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "cfe99bedf7531b362ca908927d297c9aeda22b5cf531aa55157bf244d5af5134", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfe99bedf7531b362ca908927d297c9aeda22b5cf531aa55157bf244d5af5134", kill_on_drop: false }`
[INFO] [stdout] cfe99bedf7531b362ca908927d297c9aeda22b5cf531aa55157bf244d5af5134
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] d082ef14744f7fb529eb2c0f376bd89568609f430b8ecd4aa782044f2ce2ce15
[INFO] running `Command { std: "docker" "start" "-a" "d082ef14744f7fb529eb2c0f376bd89568609f430b8ecd4aa782044f2ce2ce15", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   unsafe { std::intrinsics::type_name::<T>() }
[INFO] [stdout]    |   ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling t_bang v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:15:39
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub extern fn type_of<'a, T>(_: T) -> &'a str {
[INFO] [stdout]    |                                       ^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]    = help: consider using `*const u8` and a length instead
[INFO] [stdout]    = note: string slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/lib.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   unsafe { std::intrinsics::type_name::<T>() }
[INFO] [stdout]    |   ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stdout]   --> src/lib.rs:15:39
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub extern fn type_of<'a, T>(_: T) -> &'a str {
[INFO] [stdout]    |                                       ^^^^^^^ not FFI-safe
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout]    = help: consider using `*const u8` and a length instead
[INFO] [stdout]    = note: string slices have no C equivalent
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d082ef14744f7fb529eb2c0f376bd89568609f430b8ecd4aa782044f2ce2ce15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d082ef14744f7fb529eb2c0f376bd89568609f430b8ecd4aa782044f2ce2ce15", kill_on_drop: false }`
[INFO] [stdout] d082ef14744f7fb529eb2c0f376bd89568609f430b8ecd4aa782044f2ce2ce15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 4069a6b8b6b698e355c3d2a25428434154c63d9cc83ee4796df7cf95e56d7f69
[INFO] running `Command { std: "docker" "start" "-a" "4069a6b8b6b698e355c3d2a25428434154c63d9cc83ee4796df7cf95e56d7f69", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/lib.rs:16:3
[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] 16 |   unsafe { std::intrinsics::type_name::<T>() }
[INFO] [stdout] 
[INFO] [stderr]    |   ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:15:39
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub extern fn type_of<'a, T>(_: T) -> &'a str {
[INFO] [stderr]    |                                       ^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stderr]    = help: consider using `*const u8` and a length instead
[INFO] [stderr]    = note: string slices have no C equivalent
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/lib.rs:16:3
[INFO] [stderr]    |
[INFO] [stderr] 16 |   unsafe { std::intrinsics::type_name::<T>() }
[INFO] [stderr]    |   ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` fn uses type `str`, which is not FFI-safe
[INFO] [stderr]   --> src/lib.rs:15:39
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub extern fn type_of<'a, T>(_: T) -> &'a str {
[INFO] [stderr]    |                                       ^^^^^^^ not FFI-safe
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stderr]    = help: consider using `*const u8` and a length instead
[INFO] [stderr]    = note: string slices have no C equivalent
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/t_bang-98f4ece9f51ad4f9)
[INFO] [stderr]    Doc-tests t_bang
[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" "4069a6b8b6b698e355c3d2a25428434154c63d9cc83ee4796df7cf95e56d7f69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4069a6b8b6b698e355c3d2a25428434154c63d9cc83ee4796df7cf95e56d7f69", kill_on_drop: false }`
[INFO] [stdout] 4069a6b8b6b698e355c3d2a25428434154c63d9cc83ee4796df7cf95e56d7f69