[INFO] cloning repository https://github.com/teawithsand/smtpc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/teawithsand/smtpc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteawithsand%2Fsmtpc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteawithsand%2Fsmtpc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a08f6f8c2e99552b782b094a8a3686e02e20a7c
[INFO] checking teawithsand/smtpc against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteawithsand%2Fsmtpc" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/teawithsand/smtpc on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/teawithsand/smtpc
[INFO] finished tweaking git repo https://github.com/teawithsand/smtpc
[INFO] tweaked toml for git repo https://github.com/teawithsand/smtpc written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/teawithsand/smtpc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c91a1de6d70c97a002787ea122ae9c4cbae909292673eb0bb654a34b3d2c827d
[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" "c91a1de6d70c97a002787ea122ae9c4cbae909292673eb0bb654a34b3d2c827d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c91a1de6d70c97a002787ea122ae9c4cbae909292673eb0bb654a34b3d2c827d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c91a1de6d70c97a002787ea122ae9c4cbae909292673eb0bb654a34b3d2c827d", kill_on_drop: false }`
[INFO] [stdout] c91a1de6d70c97a002787ea122ae9c4cbae909292673eb0bb654a34b3d2c827d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c423847dbceb9f0c0db162e9e59627bced56e88ad4d49594c692633eb5d5585
[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" "5c423847dbceb9f0c0db162e9e59627bced56e88ad4d49594c692633eb5d5585", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling ucd-util v0.1.5
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]     Checking mime v0.3.14
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling regex-syntax v0.6.10
[INFO] [stderr]    Compiling aho-corasick v0.7.4
[INFO] [stderr]    Compiling regex v1.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]    Compiling derive_more v0.15.0
[INFO] [stderr]     Checking smtpc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `str::<impl str>::to_ascii_uppercase` that must be used
[INFO] [stdout]   --> src/mail/header/raw_bag.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 data[i..=i].to_ascii_uppercase();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: to uppercase the value in-place, use `make_ascii_uppercase()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `str::<impl str>::to_ascii_lowercase` that must be used
[INFO] [stdout]   --> src/mail/header/raw_bag.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |                 data[i..=i].to_ascii_lowercase();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: to lowercase the value in-place, use `make_ascii_lowercase()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `str::<impl str>::to_ascii_uppercase` that must be used
[INFO] [stdout]   --> src/mail/header/raw_bag.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 data[i..=i].to_ascii_uppercase();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: to uppercase the value in-place, use `make_ascii_uppercase()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `str::<impl str>::to_ascii_lowercase` that must be used
[INFO] [stdout]   --> src/mail/header/raw_bag.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |                 data[i..=i].to_ascii_lowercase();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: to lowercase the value in-place, use `make_ascii_lowercase()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.23s
[INFO] running `Command { std: "docker" "inspect" "5c423847dbceb9f0c0db162e9e59627bced56e88ad4d49594c692633eb5d5585", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c423847dbceb9f0c0db162e9e59627bced56e88ad4d49594c692633eb5d5585", kill_on_drop: false }`
[INFO] [stdout] 5c423847dbceb9f0c0db162e9e59627bced56e88ad4d49594c692633eb5d5585