[INFO] fetching crate postal-rs 0.1.0...
[INFO] testing postal-rs-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate postal-rs 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate postal-rs 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate postal-rs 0.1.0
[INFO] finished tweaking crates.io crate postal-rs 0.1.0
[INFO] tweaked toml for crates.io crate postal-rs 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a9ea403ca5a214e4f0c73054b84723426e6fa8bcdc7f4908c62b7e79d89f169
[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" "0a9ea403ca5a214e4f0c73054b84723426e6fa8bcdc7f4908c62b7e79d89f169", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a9ea403ca5a214e4f0c73054b84723426e6fa8bcdc7f4908c62b7e79d89f169", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a9ea403ca5a214e4f0c73054b84723426e6fa8bcdc7f4908c62b7e79d89f169", kill_on_drop: false }`
[INFO] [stdout] 0a9ea403ca5a214e4f0c73054b84723426e6fa8bcdc7f4908c62b7e79d89f169
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3c8eed14087f83726b7b4537c95bd9b20da8b7227ae0ea7ce714e154a8f1419
[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" "c3c8eed14087f83726b7b4537c95bd9b20da8b7227ae0ea7ce714e154a8f1419", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling openssl v0.10.32
[INFO] [stderr]    Compiling futures-task v0.3.8
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling encoding_rs v0.8.26
[INFO] [stderr]    Compiling httpdate v0.3.2
[INFO] [stderr]    Compiling ipnet v2.3.0
[INFO] [stderr]    Compiling openssl-sys v0.9.60
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling tracing-core v0.1.17
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling http v0.2.2
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling tracing v0.1.22
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling tokio v0.2.24
[INFO] [stderr]    Compiling pin-project v0.4.27
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling tracing-futures v0.2.4
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tokio-tls v0.3.1
[INFO] [stderr]    Compiling h2 v0.2.7
[INFO] [stderr]    Compiling hyper v0.13.9
[INFO] [stderr]    Compiling hyper-tls v0.4.3
[INFO] [stderr]    Compiling reqwest v0.10.10
[INFO] [stderr]    Compiling postal-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 10s
[INFO] running `Command { std: "docker" "inspect" "c3c8eed14087f83726b7b4537c95bd9b20da8b7227ae0ea7ce714e154a8f1419", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3c8eed14087f83726b7b4537c95bd9b20da8b7227ae0ea7ce714e154a8f1419", kill_on_drop: false }`
[INFO] [stdout] c3c8eed14087f83726b7b4537c95bd9b20da8b7227ae0ea7ce714e154a8f1419
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84681dead92cd2b09e5c5ab646d30de7abf1165594cd88c9c6bd0cd68e7b9c44
[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" "84681dead92cd2b09e5c5ab646d30de7abf1165594cd88c9c6bd0cd68e7b9c44", kill_on_drop: false }`
[INFO] [stderr]    Compiling postal-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `Command { std: "docker" "inspect" "84681dead92cd2b09e5c5ab646d30de7abf1165594cd88c9c6bd0cd68e7b9c44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84681dead92cd2b09e5c5ab646d30de7abf1165594cd88c9c6bd0cd68e7b9c44", kill_on_drop: false }`
[INFO] [stdout] 84681dead92cd2b09e5c5ab646d30de7abf1165594cd88c9c6bd0cd68e7b9c44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b9046bf4bc6b125f483361664e11fdea7d4d42d9da7b74a024a27226fffdcdd4
[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" "b9046bf4bc6b125f483361664e11fdea7d4d42d9da7b74a024a27226fffdcdd4", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/postal_rs-86f3780a329ab4d6
[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 postal-rs
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 6) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 6) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `tokio`
[INFO] [stdout]  --> src/lib.rs:10:3
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[tokio::main]
[INFO] [stdout]   |   ^^^^^ use of undeclared crate or module `tokio`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `main` has invalid return type `impl Future`
[INFO] [stdout]  --> src/lib.rs:11:17
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn main() {
[INFO] [stdout]   |                 ^ `main` can only return types that implement `Termination`
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using `()`, or a `Result`
[INFO] [stdout] 
[INFO] [stdout] error[E0752]: `main` function is not allowed to be `async`
[INFO] [stdout]  --> src/lib.rs:11:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | async fn main() {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^ `main` function is not allowed to be `async`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0433, E0752.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 6)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.63s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "b9046bf4bc6b125f483361664e11fdea7d4d42d9da7b74a024a27226fffdcdd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9046bf4bc6b125f483361664e11fdea7d4d42d9da7b74a024a27226fffdcdd4", kill_on_drop: false }`
[INFO] [stdout] b9046bf4bc6b125f483361664e11fdea7d4d42d9da7b74a024a27226fffdcdd4