[INFO] fetching crate etwin_mailer 0.10.0...
[INFO] testing etwin_mailer-0.10.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate etwin_mailer 0.10.0 into /workspace/builds/worker-115/source
[INFO] validating manifest of crates.io crate etwin_mailer 0.10.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate etwin_mailer 0.10.0
[INFO] finished tweaking crates.io crate etwin_mailer 0.10.0
[INFO] tweaked toml for crates.io crate etwin_mailer 0.10.0 written to /workspace/builds/worker-115/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 08004f746fa9d092cb44b6fc2ebb514d691a3c90fccbfbca6cc137765e540485
[INFO] running `Command { std: "docker" "start" "-a" "08004f746fa9d092cb44b6fc2ebb514d691a3c90fccbfbca6cc137765e540485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08004f746fa9d092cb44b6fc2ebb514d691a3c90fccbfbca6cc137765e540485", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08004f746fa9d092cb44b6fc2ebb514d691a3c90fccbfbca6cc137765e540485", kill_on_drop: false }`
[INFO] [stdout] 08004f746fa9d092cb44b6fc2ebb514d691a3c90fccbfbca6cc137765e540485
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-115/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3c483939afe87984b139a4138eb2f9d18a8ac2c6ba3c9eb3b1f4847d6865438
[INFO] running `Command { std: "docker" "start" "-a" "f3c483939afe87984b139a4138eb2f9d18a8ac2c6ba3c9eb3b1f4847d6865438", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling untrusted v0.7.1
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling async-trait v0.1.53
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling rustls v0.20.4
[INFO] [stderr]    Compiling pin-project-lite v0.2.8
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling futures-io v0.3.21
[INFO] [stderr]    Compiling match_cfg v0.1.0
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling slab v0.4.6
[INFO] [stderr]    Compiling itoa v1.0.1
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling ryu v1.0.9
[INFO] [stderr]    Compiling quoted_printable v0.4.5
[INFO] [stderr]    Compiling fastrand v1.7.0
[INFO] [stderr]    Compiling httpdate v1.0.2
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling tinyvec v1.5.1
[INFO] [stderr]    Compiling email-encoding v0.1.0
[INFO] [stderr]    Compiling rustls-pemfile v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling nom v7.1.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling mio v0.8.2
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling getrandom v0.2.6
[INFO] [stderr]    Compiling hostname v0.3.1
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling enum-iterator-derive v0.7.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling auto_impl v0.5.0
[INFO] [stderr]    Compiling webpki v0.22.0
[INFO] [stderr]    Compiling sct v0.7.0
[INFO] [stderr]    Compiling webpki-roots v0.22.3
[INFO] [stderr]    Compiling tokio v1.17.0
[INFO] [stderr]    Compiling enum-iterator v0.7.0
[INFO] [stderr]    Compiling tokio-rustls v0.23.3
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling lettre v0.10.0-rc.5
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling etwin_serde_tools v0.10.0
[INFO] [stderr]    Compiling etwin_core v0.10.0
[INFO] [stderr]    Compiling etwin_mailer v0.10.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0053]: method `display` has an incompatible type for trait
[INFO] [stdout]   --> src/smtp.rs:53:24
[INFO] [stdout]    |
[INFO] [stdout] 53 |   fn display(&self) -> String {
[INFO] [stdout]    |                        ^^^^^^
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        expected struct `HeaderValue`, found struct `std::string::String`
[INFO] [stdout]    |                        help: change the output type to match the trait: `HeaderValue`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&PmMessageStream) -> HeaderValue`
[INFO] [stdout]               found fn pointer `fn(&PmMessageStream) -> std::string::String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0053`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `etwin_mailer` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f3c483939afe87984b139a4138eb2f9d18a8ac2c6ba3c9eb3b1f4847d6865438", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3c483939afe87984b139a4138eb2f9d18a8ac2c6ba3c9eb3b1f4847d6865438", kill_on_drop: false }`
[INFO] [stdout] f3c483939afe87984b139a4138eb2f9d18a8ac2c6ba3c9eb3b1f4847d6865438