[INFO] fetching crate tailcall-impl 0.1.6...
[INFO] testing tailcall-impl-0.1.6 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate tailcall-impl 0.1.6 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate tailcall-impl 0.1.6 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tailcall-impl 0.1.6
[INFO] finished tweaking crates.io crate tailcall-impl 0.1.6
[INFO] tweaked toml for crates.io crate tailcall-impl 0.1.6 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd397a3bd3630fa2982cd9f80f5f57a092dfc1ddb1bfcf251d8c376066daab6d
[INFO] running `Command { std: "docker" "start" "-a" "dd397a3bd3630fa2982cd9f80f5f57a092dfc1ddb1bfcf251d8c376066daab6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd397a3bd3630fa2982cd9f80f5f57a092dfc1ddb1bfcf251d8c376066daab6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd397a3bd3630fa2982cd9f80f5f57a092dfc1ddb1bfcf251d8c376066daab6d", kill_on_drop: false }`
[INFO] [stdout] dd397a3bd3630fa2982cd9f80f5f57a092dfc1ddb1bfcf251d8c376066daab6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8dad27d7a9d25e0a274720d84692ee1b3d44ab2314432593174d372dccc68c58
[INFO] running `Command { std: "docker" "start" "-a" "8dad27d7a9d25e0a274720d84692ee1b3d44ab2314432593174d372dccc68c58", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling tailcall-impl v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.06s
[INFO] running `Command { std: "docker" "inspect" "8dad27d7a9d25e0a274720d84692ee1b3d44ab2314432593174d372dccc68c58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dad27d7a9d25e0a274720d84692ee1b3d44ab2314432593174d372dccc68c58", kill_on_drop: false }`
[INFO] [stdout] 8dad27d7a9d25e0a274720d84692ee1b3d44ab2314432593174d372dccc68c58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e9f668ff6e517557418e5510a68a66f394b8f83b0171a2072b0679b60efc60a
[INFO] running `Command { std: "docker" "start" "-a" "7e9f668ff6e517557418e5510a68a66f394b8f83b0171a2072b0679b60efc60a", kill_on_drop: false }`
[INFO] [stderr]    Compiling tailcall-impl v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "7e9f668ff6e517557418e5510a68a66f394b8f83b0171a2072b0679b60efc60a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e9f668ff6e517557418e5510a68a66f394b8f83b0171a2072b0679b60efc60a", kill_on_drop: false }`
[INFO] [stdout] 7e9f668ff6e517557418e5510a68a66f394b8f83b0171a2072b0679b60efc60a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ec4a08db7568e3ee4e954f62e21b4e02f23b9f83467bf9b282a39947726e5f89
[INFO] running `Command { std: "docker" "start" "-a" "ec4a08db7568e3ee4e954f62e21b4e02f23b9f83467bf9b282a39947726e5f89", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tailcall_impl-260f6d8eecb675e2)
[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] [stderr]    Doc-tests tailcall-impl
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - tailcall (line 54) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - tailcall (line 33) ... FAILED
[INFO] [stdout] test src/lib.rs - tailcall (line 70) - compile fail ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - tailcall (line 33) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `tailcall`
[INFO] [stdout]  --> src/lib.rs:34:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tailcall::tailcall;
[INFO] [stdout]   |     ^^^^^^^^ use of undeclared crate or module `tailcall`
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the attribute macro `tailcall`
[INFO] [stdout]  --> src/lib.rs:37:7
[INFO] [stdout]   |
[INFO] [stdout] 6 |     #[tailcall]
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - tailcall (line 33)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 2 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.21s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "ec4a08db7568e3ee4e954f62e21b4e02f23b9f83467bf9b282a39947726e5f89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec4a08db7568e3ee4e954f62e21b4e02f23b9f83467bf9b282a39947726e5f89", kill_on_drop: false }`
[INFO] [stdout] ec4a08db7568e3ee4e954f62e21b4e02f23b9f83467bf9b282a39947726e5f89