[INFO] fetching crate tiny-mailcatcher 0.9.3...
[INFO] checking tiny-mailcatcher-0.9.3 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate tiny-mailcatcher 0.9.3 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate tiny-mailcatcher 0.9.3 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tiny-mailcatcher 0.9.3
[INFO] finished tweaking crates.io crate tiny-mailcatcher 0.9.3
[INFO] tweaked toml for crates.io crate tiny-mailcatcher 0.9.3 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate tiny-mailcatcher 0.9.3 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mailparse v0.13.7
[INFO] [stderr]   Downloaded routerify v3.0.0
[INFO] [stderr]   Downloaded charset v0.1.3
[INFO] [stderr]   Downloaded lettre v0.10.0-rc.4
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fda7e41c26233de39c1cc004bc17b8ed21747554ec9c3c31caf29cfe7168e47
[INFO] running `Command { std: "docker" "start" "-a" "9fda7e41c26233de39c1cc004bc17b8ed21747554ec9c3c31caf29cfe7168e47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fda7e41c26233de39c1cc004bc17b8ed21747554ec9c3c31caf29cfe7168e47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fda7e41c26233de39c1cc004bc17b8ed21747554ec9c3c31caf29cfe7168e47", kill_on_drop: false }`
[INFO] [stdout] 9fda7e41c26233de39c1cc004bc17b8ed21747554ec9c3c31caf29cfe7168e47
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9fb80915c7035db43debb3afe179e2bc07de6c3aceb6e897a595cfee2e1f8997
[INFO] running `Command { std: "docker" "start" "-a" "9fb80915c7035db43debb3afe179e2bc07de6c3aceb6e897a595cfee2e1f8997", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]     Checking futures-io v0.3.19
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling serde_json v1.0.74
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking quoted_printable v0.4.5
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking charset v0.1.3
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling nom v7.1.0
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking mailparse v0.13.7
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking fastrand v1.6.0
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.19
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]     Checking tokio v1.15.0
[INFO] [stderr]     Checking structopt v0.3.25
[INFO] [stderr]     Checking futures-executor v0.3.19
[INFO] [stderr]     Checking futures v0.3.19
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking lettre v0.10.0-rc.4
[INFO] [stderr]     Checking h2 v0.3.9
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking hyper v0.14.16
[INFO] [stderr]     Checking routerify v3.0.0
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.8
[INFO] [stderr]     Checking tiny-mailcatcher v0.9.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `MessageRepository` is imported redundantly
[INFO] [stdout]    --> src/http.rs:360:51
[INFO] [stdout]     |
[INFO] [stdout] 359 |     use super::*;
[INFO] [stdout]     |         -------- the item `MessageRepository` is already imported here
[INFO] [stdout] 360 |     use crate::repository::{Message, MessagePart, MessageRepository};
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Request` is imported redundantly
[INFO] [stdout]    --> src/http.rs:362:31
[INFO] [stdout]     |
[INFO] [stdout] 359 |     use super::*;
[INFO] [stdout]     |         -------- the item `Request` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 362 |     use hyper::{body, Client, Request, StatusCode};
[INFO] [stdout]     |                               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StatusCode` is imported redundantly
[INFO] [stdout]    --> src/http.rs:362:40
[INFO] [stdout]     |
[INFO] [stdout] 359 |     use super::*;
[INFO] [stdout]     |         -------- the item `StatusCode` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 362 |     use hyper::{body, Client, Request, StatusCode};
[INFO] [stdout]     |                                        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Server` is imported redundantly
[INFO] [stdout]    --> src/http.rs:363:33
[INFO] [stdout]     |
[INFO] [stdout] 359 |     use super::*;
[INFO] [stdout]     |         -------- the item `Server` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 363 |     use hyper::{body::HttpBody, Server};
[INFO] [stdout]     |                                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Router` is imported redundantly
[INFO] [stdout]    --> src/http.rs:364:21
[INFO] [stdout]     |
[INFO] [stdout] 359 |     use super::*;
[INFO] [stdout]     |         -------- the item `Router` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 364 |     use routerify::{Router, RouterService};
[INFO] [stdout]     |                     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RouterService` is imported redundantly
[INFO] [stdout]    --> src/http.rs:364:29
[INFO] [stdout]     |
[INFO] [stdout] 359 |     use super::*;
[INFO] [stdout]     |         -------- the item `RouterService` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 364 |     use routerify::{Router, RouterService};
[INFO] [stdout]     |                             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]    --> src/http.rs:367:16
[INFO] [stdout]     |
[INFO] [stdout] 359 |     use super::*;
[INFO] [stdout]     |         -------- the item `Arc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 367 |         sync::{Arc, Mutex},
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Mutex` is imported redundantly
[INFO] [stdout]    --> src/http.rs:367:21
[INFO] [stdout]     |
[INFO] [stdout] 359 |     use super::*;
[INFO] [stdout]     |         -------- the item `Mutex` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 367 |         sync::{Arc, Mutex},
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.83s
[INFO] running `Command { std: "docker" "inspect" "9fb80915c7035db43debb3afe179e2bc07de6c3aceb6e897a595cfee2e1f8997", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fb80915c7035db43debb3afe179e2bc07de6c3aceb6e897a595cfee2e1f8997", kill_on_drop: false }`
[INFO] [stdout] 9fb80915c7035db43debb3afe179e2bc07de6c3aceb6e897a595cfee2e1f8997