[INFO] cloning repository https://github.com/opentelekomcloud-infra/cloudmon-plugin-smtp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/opentelekomcloud-infra/cloudmon-plugin-smtp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopentelekomcloud-infra%2Fcloudmon-plugin-smtp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopentelekomcloud-infra%2Fcloudmon-plugin-smtp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2b296709f9e6ebab5569fc36d1da9a1d2449c7b9
[INFO] checking opentelekomcloud-infra/cloudmon-plugin-smtp against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopentelekomcloud-infra%2Fcloudmon-plugin-smtp" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/opentelekomcloud-infra/cloudmon-plugin-smtp on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/opentelekomcloud-infra/cloudmon-plugin-smtp
[INFO] finished tweaking git repo https://github.com/opentelekomcloud-infra/cloudmon-plugin-smtp
[INFO] tweaked toml for git repo https://github.com/opentelekomcloud-infra/cloudmon-plugin-smtp written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/opentelekomcloud-infra/cloudmon-plugin-smtp 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded statsd v0.13.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3175821d252f607b2719bd378d92af98991eab5d1084da2b8cc2c912a116b0c5
[INFO] running `Command { std: "docker" "start" "-a" "3175821d252f607b2719bd378d92af98991eab5d1084da2b8cc2c912a116b0c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3175821d252f607b2719bd378d92af98991eab5d1084da2b8cc2c912a116b0c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3175821d252f607b2719bd378d92af98991eab5d1084da2b8cc2c912a116b0c5", kill_on_drop: false }`
[INFO] [stdout] 3175821d252f607b2719bd378d92af98991eab5d1084da2b8cc2c912a116b0c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc1b4432ee2a28bcf451eef766204691a8b92694fcf9ced791c6449a2d978d31
[INFO] running `Command { std: "docker" "start" "-a" "bc1b4432ee2a28bcf451eef766204691a8b92694fcf9ced791c6449a2d978d31", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking statsd v0.13.1
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking serde v1.0.136
[INFO] [stderr]     Checking serde_yaml v0.8.23
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking cloudmon-plugin-smtp v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/main.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 | use serde_yaml::{self};
[INFO] [stdout]    |                  ^^^^ the item `serde_yaml` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.40s
[INFO] running `Command { std: "docker" "inspect" "bc1b4432ee2a28bcf451eef766204691a8b92694fcf9ced791c6449a2d978d31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc1b4432ee2a28bcf451eef766204691a8b92694fcf9ced791c6449a2d978d31", kill_on_drop: false }`
[INFO] [stdout] bc1b4432ee2a28bcf451eef766204691a8b92694fcf9ced791c6449a2d978d31
[INFO] checking opentelekomcloud-infra/cloudmon-plugin-smtp against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fopentelekomcloud-infra%2Fcloudmon-plugin-smtp" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/opentelekomcloud-infra/cloudmon-plugin-smtp on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/opentelekomcloud-infra/cloudmon-plugin-smtp
[INFO] finished tweaking git repo https://github.com/opentelekomcloud-infra/cloudmon-plugin-smtp
[INFO] tweaked toml for git repo https://github.com/opentelekomcloud-infra/cloudmon-plugin-smtp written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/opentelekomcloud-infra/cloudmon-plugin-smtp 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d8f30db99e691de4bac811a173bc7adc6e3b6c1924e8cc567b791965af3e0fb
[INFO] running `Command { std: "docker" "start" "-a" "2d8f30db99e691de4bac811a173bc7adc6e3b6c1924e8cc567b791965af3e0fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d8f30db99e691de4bac811a173bc7adc6e3b6c1924e8cc567b791965af3e0fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d8f30db99e691de4bac811a173bc7adc6e3b6c1924e8cc567b791965af3e0fb", kill_on_drop: false }`
[INFO] [stdout] 2d8f30db99e691de4bac811a173bc7adc6e3b6c1924e8cc567b791965af3e0fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18b6103c6c23f1f82ffca732b49cbbcc55f2b5f2758a27fb18c9cc2f75e15a73
[INFO] running `Command { std: "docker" "start" "-a" "18b6103c6c23f1f82ffca732b49cbbcc55f2b5f2758a27fb18c9cc2f75e15a73", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking statsd v0.13.1
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking serde v1.0.136
[INFO] [stderr]     Checking serde_yaml v0.8.23
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking cloudmon-plugin-smtp v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/main.rs:11:18
[INFO] [stdout]    |
[INFO] [stdout] 11 | use serde_yaml::{self};
[INFO] [stdout]    |                  ^^^^ the item `serde_yaml` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.48s
[INFO] running `Command { std: "docker" "inspect" "18b6103c6c23f1f82ffca732b49cbbcc55f2b5f2758a27fb18c9cc2f75e15a73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18b6103c6c23f1f82ffca732b49cbbcc55f2b5f2758a27fb18c9cc2f75e15a73", kill_on_drop: false }`
[INFO] [stdout] 18b6103c6c23f1f82ffca732b49cbbcc55f2b5f2758a27fb18c9cc2f75e15a73