[INFO] fetching crate etwin_mailer 0.12.3...
[INFO] checking etwin_mailer-0.12.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate etwin_mailer 0.12.3 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate etwin_mailer 0.12.3
[INFO] finished tweaking crates.io crate etwin_mailer 0.12.3
[INFO] tweaked toml for crates.io crate etwin_mailer 0.12.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate etwin_mailer 0.12.3 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 171 packages to latest compatible versions
[INFO] [stderr]       Adding lettre v0.10.4 (available: v0.11.19)
[INFO] [stderr]       Adding neon v0.10.1 (available: v1.1.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e3e0eda929b6d2fbc94aac25e6dc36c7c63139fc894fff7a7bb2e348ecef37e
[INFO] running `Command { std: "docker" "start" "-a" "9e3e0eda929b6d2fbc94aac25e6dc36c7c63139fc894fff7a7bb2e348ecef37e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e3e0eda929b6d2fbc94aac25e6dc36c7c63139fc894fff7a7bb2e348ecef37e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e3e0eda929b6d2fbc94aac25e6dc36c7c63139fc894fff7a7bb2e348ecef37e", kill_on_drop: false }`
[INFO] [stdout] 9e3e0eda929b6d2fbc94aac25e6dc36c7c63139fc894fff7a7bb2e348ecef37e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4037f16dcc05ac38ac397f66210e43b5ea3779bcfb7b2a037d7edcdf148579c8
[INFO] running `Command { std: "docker" "start" "-a" "4037f16dcc05ac38ac397f66210e43b5ea3779bcfb7b2a037d7edcdf148579c8", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling rustls v0.21.12
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking base64 v0.22.1
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking idna v0.3.0
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]    Compiling auto_impl v1.3.0
[INFO] [stderr]     Checking quoted_printable v0.4.8
[INFO] [stderr]     Checking email_address v0.2.9
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking ring v0.17.14
[INFO] [stderr]     Checking email-encoding v0.2.1
[INFO] [stderr]     Checking url v2.5.7
[INFO] [stderr]     Checking chrono v0.4.42
[INFO] [stderr]     Checking uuid v1.18.1
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking tokio v1.48.0
[INFO] [stderr]     Checking regex-automata v0.4.13
[INFO] [stderr]     Checking etwin_config v0.12.3
[INFO] [stderr]     Checking etwin_serde_tools v0.12.3
[INFO] [stderr]     Checking rustls-webpki v0.101.7
[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]     Checking regex v1.12.2
[INFO] [stderr]     Checking rustls-webpki v0.100.3
[INFO] [stderr]     Checking etwin_core v0.12.3
[INFO] [stderr]     Checking webpki-roots v0.23.1
[INFO] [stderr]    Compiling test-generator v0.3.1
[INFO] [stderr]     Checking tokio-rustls v0.24.1
[INFO] [stderr]     Checking lettre v0.10.4
[INFO] [stderr]     Checking etwin_mailer v0.12.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/smtp.rs:192:13
[INFO] [stdout]     |
[INFO] [stdout] 192 | /             "Hi, complete the registration by going to <a href=https://eternal-twin.net>Eternaltwin</a>."
[INFO] [stdout] 193 | |               .parse()
[INFO] [stdout]     | |______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `etwin_mailer` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "4037f16dcc05ac38ac397f66210e43b5ea3779bcfb7b2a037d7edcdf148579c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4037f16dcc05ac38ac397f66210e43b5ea3779bcfb7b2a037d7edcdf148579c8", kill_on_drop: false }`
[INFO] [stdout] 4037f16dcc05ac38ac397f66210e43b5ea3779bcfb7b2a037d7edcdf148579c8