[INFO] fetching crate check-if-email-exists 0.8.24...
[INFO] testing check-if-email-exists-0.8.24 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate check-if-email-exists 0.8.24 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate check-if-email-exists 0.8.24 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 check-if-email-exists 0.8.24
[INFO] finished tweaking crates.io crate check-if-email-exists 0.8.24
[INFO] tweaked toml for crates.io crate check-if-email-exists 0.8.24 written to /workspace/builds/worker-10/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fast-socks5 v0.4.3
[INFO] [stderr]   Downloaded async-smtp v0.4.0
[INFO] [stderr]   Downloaded mailchecker v4.0.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 7c105eb01d4bed811249fa78f7f50baad3e7e6c65bb08f2d1c4c910c2ae4af62
[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" "7c105eb01d4bed811249fa78f7f50baad3e7e6c65bb08f2d1c4c910c2ae4af62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c105eb01d4bed811249fa78f7f50baad3e7e6c65bb08f2d1c4c910c2ae4af62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c105eb01d4bed811249fa78f7f50baad3e7e6c65bb08f2d1c4c910c2ae4af62", kill_on_drop: false }`
[INFO] [stdout] 7c105eb01d4bed811249fa78f7f50baad3e7e6c65bb08f2d1c4c910c2ae4af62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 1879e053836ab12518a90ae1d50a1245a4a1e85f91127eac091daaff6fbe8a38
[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" "1879e053836ab12518a90ae1d50a1245a4a1e85f91127eac091daaff6fbe8a38", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling futures-io v0.3.17
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling cache-padded v1.1.1
[INFO] [stderr]    Compiling fastrand v1.5.0
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling event-listener v2.5.1
[INFO] [stderr]    Compiling signal-hook v0.3.10
[INFO] [stderr]    Compiling async-task v4.0.3
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling data-encoding v2.3.2
[INFO] [stderr]    Compiling ascii_utils v0.9.3
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling openssl-sys v0.9.66
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling lock_api v0.4.5
[INFO] [stderr]    Compiling async-mutex v1.4.0
[INFO] [stderr]    Compiling async-lock v2.4.0
[INFO] [stderr]    Compiling lru-cache v0.1.2
[INFO] [stderr]    Compiling fast_chemail v0.9.6
[INFO] [stderr]    Compiling futures-lite v1.12.0
[INFO] [stderr]    Compiling async-channel v1.6.1
[INFO] [stderr]    Compiling mailchecker v4.0.11
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling socket2 v0.4.1
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling hostname v0.3.1
[INFO] [stderr]    Compiling hostname v0.1.5
[INFO] [stderr]    Compiling blocking v1.0.2
[INFO] [stderr]    Compiling async-executor v1.4.1
[INFO] [stderr]    Compiling resolv-conf v0.7.0
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling ctor v0.1.21
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling polling v2.1.0
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling pin-project v1.0.8
[INFO] [stderr]    Compiling async-io v1.6.0
[INFO] [stderr]    Compiling thiserror v1.0.29
[INFO] [stderr]    Compiling async-process v1.2.0
[INFO] [stderr]    Compiling async-global-executor v2.0.2
[INFO] [stderr]    Compiling async-std v1.10.0
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling tokio-util v0.6.8
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling trust-dns-proto v0.20.3
[INFO] [stderr]    Compiling tokio-socks v0.5.1
[INFO] [stderr]    Compiling h2 v0.3.4
[INFO] [stderr]    Compiling fast-socks5 v0.4.3
[INFO] [stderr]    Compiling async-native-tls v0.3.3
[INFO] [stderr]    Compiling trust-dns-resolver v0.20.3
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling async-std-resolver v0.20.3
[INFO] [stderr]    Compiling async-smtp v0.4.0
[INFO] [stderr]    Compiling hyper v0.14.12
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.4
[INFO] [stderr]    Compiling check-if-email-exists v0.8.24 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 43s
[INFO] running `Command { std: "docker" "inspect" "1879e053836ab12518a90ae1d50a1245a4a1e85f91127eac091daaff6fbe8a38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1879e053836ab12518a90ae1d50a1245a4a1e85f91127eac091daaff6fbe8a38", kill_on_drop: false }`
[INFO] [stdout] 1879e053836ab12518a90ae1d50a1245a4a1e85f91127eac091daaff6fbe8a38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] d06056da4886142c3397078916ae53231a1dd2e8a48a3c3c4ffde9762a391894
[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" "d06056da4886142c3397078916ae53231a1dd2e8a48a3c3c4ffde9762a391894", kill_on_drop: false }`
[INFO] [stderr]    Compiling check-if-email-exists v0.8.24 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 11.56s
[INFO] running `Command { std: "docker" "inspect" "d06056da4886142c3397078916ae53231a1dd2e8a48a3c3c4ffde9762a391894", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d06056da4886142c3397078916ae53231a1dd2e8a48a3c3c4ffde9762a391894", kill_on_drop: false }`
[INFO] [stdout] d06056da4886142c3397078916ae53231a1dd2e8a48a3c3c4ffde9762a391894
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 7865cf2378fc9d16dcea8c2f9a918c6f8cfb38e44bd39d8a8424e8eeeea7ff07
[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" "7865cf2378fc9d16dcea8c2f9a918c6f8cfb38e44bd39d8a8424e8eeeea7ff07", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/check_if_email_exists-e448d0a2ba21e4db)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test syntax::tests::should_work_for_valid_email ... ok
[INFO] [stdout] test syntax::tests::should_return_invalid_for_invalid_email ... ok
[INFO] [stdout] test syntax::tests::should_return_invalid_for_invalid_email_with_at ... ok
[INFO] [stdout] test smtp::tests::should_timeout ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests check-if-email-exists
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 36) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.06s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7865cf2378fc9d16dcea8c2f9a918c6f8cfb38e44bd39d8a8424e8eeeea7ff07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7865cf2378fc9d16dcea8c2f9a918c6f8cfb38e44bd39d8a8424e8eeeea7ff07", kill_on_drop: false }`
[INFO] [stdout] 7865cf2378fc9d16dcea8c2f9a918c6f8cfb38e44bd39d8a8424e8eeeea7ff07