[INFO] fetching crate maildir 0.6.4...
[INFO] checking maildir-0.6.4 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate maildir 0.6.4 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate maildir 0.6.4 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 maildir 0.6.4
[INFO] finished tweaking crates.io crate maildir 0.6.4
[INFO] tweaked toml for crates.io crate maildir 0.6.4 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate maildir 0.6.4 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded charset v0.1.3
[INFO] [stderr]   Downloaded getrandom v0.1.12
[INFO] [stderr]   Downloaded mailparse v0.14.0
[INFO] [stderr]   Downloaded quoted_printable v0.4.7
[INFO] [stderr]   Downloaded cfg-if v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] dd69604fc4f0c46753b225e6501e574c44146e449462b413b842817a153144fd
[INFO] running `Command { std: "docker" "start" "-a" "dd69604fc4f0c46753b225e6501e574c44146e449462b413b842817a153144fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd69604fc4f0c46753b225e6501e574c44146e449462b413b842817a153144fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd69604fc4f0c46753b225e6501e574c44146e449462b413b842817a153144fd", kill_on_drop: false }`
[INFO] [stdout] dd69604fc4f0c46753b225e6501e574c44146e449462b413b842817a153144fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 5f9e4bb59a8dc74a6e68b94e8f4ed62dc939ce7bebfb286f752c79dedb88a091
[INFO] running `Command { std: "docker" "start" "-a" "5f9e4bb59a8dc74a6e68b94e8f4ed62dc939ce7bebfb286f752c79dedb88a091", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking quoted_printable v0.4.7
[INFO] [stderr]     Checking data-encoding v2.3.3
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking charset v0.1.3
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking mailparse v0.14.0
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking gethostname v0.2.3
[INFO] [stderr]     Checking maildir v0.6.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `Command { std: "docker" "inspect" "5f9e4bb59a8dc74a6e68b94e8f4ed62dc939ce7bebfb286f752c79dedb88a091", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f9e4bb59a8dc74a6e68b94e8f4ed62dc939ce7bebfb286f752c79dedb88a091", kill_on_drop: false }`
[INFO] [stdout] 5f9e4bb59a8dc74a6e68b94e8f4ed62dc939ce7bebfb286f752c79dedb88a091
[INFO] checking maildir-0.6.4 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate maildir 0.6.4 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate maildir 0.6.4 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate maildir 0.6.4
[INFO] finished tweaking crates.io crate maildir 0.6.4
[INFO] tweaked toml for crates.io crate maildir 0.6.4 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate maildir 0.6.4 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05c76fb3ac4069b1e15a568461c698abe35af5c2a27b7653ac18a5228943b445
[INFO] running `Command { std: "docker" "start" "-a" "05c76fb3ac4069b1e15a568461c698abe35af5c2a27b7653ac18a5228943b445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05c76fb3ac4069b1e15a568461c698abe35af5c2a27b7653ac18a5228943b445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05c76fb3ac4069b1e15a568461c698abe35af5c2a27b7653ac18a5228943b445", kill_on_drop: false }`
[INFO] [stdout] 05c76fb3ac4069b1e15a568461c698abe35af5c2a27b7653ac18a5228943b445
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36528ec57b80b4f7ce8de5672d8af2cee0f4efce0bcfb97adb1b015f8e5510b8
[INFO] running `Command { std: "docker" "start" "-a" "36528ec57b80b4f7ce8de5672d8af2cee0f4efce0bcfb97adb1b015f8e5510b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking data-encoding v2.3.3
[INFO] [stderr]     Checking quoted_printable v0.4.7
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking charset v0.1.3
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking mailparse v0.14.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mailparse-0.14.0/src/header.rs:85:9
[INFO] [stdout]     |
[INFO] [stdout] 85  | /         match find_from(line, ix_search, "=?") {
[INFO] [stdout] 86  | |             Some(v) => {
[INFO] [stdout] 87  | |                 let ix_begin = v + 2;
[INFO] [stdout] 88  | |                 if !is_boundary(line, ix_begin.checked_sub(3)) {
[INFO] [stdout] ...   |
[INFO] [stdout] 123 | |             }
[INFO] [stdout] 124 | |         };
[INFO] [stdout]     | |_________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mailparse` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "36528ec57b80b4f7ce8de5672d8af2cee0f4efce0bcfb97adb1b015f8e5510b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36528ec57b80b4f7ce8de5672d8af2cee0f4efce0bcfb97adb1b015f8e5510b8", kill_on_drop: false }`
[INFO] [stdout] 36528ec57b80b4f7ce8de5672d8af2cee0f4efce0bcfb97adb1b015f8e5510b8