[INFO] cloning repository https://github.com/gzbakku/letterman
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gzbakku/letterman" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgzbakku%2Fletterman", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgzbakku%2Fletterman'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 02e10611a346e90cbce573130a016ac5fa35307f
[INFO] checking gzbakku/letterman against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgzbakku%2Fletterman" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gzbakku/letterman 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 git repo https://github.com/gzbakku/letterman
[INFO] finished tweaking git repo https://github.com/gzbakku/letterman
[INFO] tweaked toml for git repo https://github.com/gzbakku/letterman written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gzbakku/letterman 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 atomic_refcell v0.1.8
[INFO] [stderr]   Downloaded signal-hook-registry v1.2.1
[INFO] [stderr]   Downloaded tokio-macros v1.7.0
[INFO] [stderr]   Downloaded parking_lot_core v0.9.1
[INFO] [stderr]   Downloaded syn v1.0.67
[INFO] [stderr]   Downloaded widestring v0.4.2
[INFO] [stderr]   Downloaded quoted_printable v0.4.5
[INFO] [stderr]   Downloaded nanorand v0.6.1
[INFO] [stderr]   Downloaded spin v0.9.2
[INFO] [stderr]   Downloaded flume v0.10.9
[INFO] [stderr]   Downloaded dns-lookup v1.0.8
[INFO] [stderr]   Downloaded rustls v0.20.0
[INFO] [stderr]   Downloaded tokio v1.17.0
[INFO] [stderr]   Downloaded json v0.12.4
[INFO] [stderr]   Downloaded ipconfig v0.3.0
[INFO] [stderr]   Downloaded sha256 v1.0.3
[INFO] [stderr]   Downloaded security-framework v2.3.1
[INFO] [stderr]   Downloaded tokio-rustls v0.23.1
[INFO] [stderr]   Downloaded cidr v0.2.1
[INFO] [stderr]   Downloaded futures-executor v0.3.19
[INFO] [stderr]   Downloaded hermit-abi v0.1.17
[INFO] [stderr]   Downloaded windows-sys v0.32.0
[INFO] [stderr]   Downloaded letterman_email_body_parser v1.0.5
[INFO] [stderr]   Downloaded new_mime_guess v4.0.0
[INFO] [stderr]   Downloaded gzb_binary_69 v0.2.2
[INFO] [stderr]   Downloaded rustque v1.1.1
[INFO] [stderr]   Downloaded tokio_spf_validator v1.0.3
[INFO] [stderr]   Downloaded blob-uuid v0.4.0
[INFO] [stderr]   Downloaded unique_id v0.1.3
[INFO] [stderr]   Downloaded trust-dns-resolver v0.21.1
[INFO] [stderr]   Downloaded trust-dns-proto v0.21.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] ead8bd35180cfbe3108ebefed4de32ad7be0d1b5c0df0f07b57bad4791ac1c55
[INFO] running `Command { std: "docker" "start" "-a" "ead8bd35180cfbe3108ebefed4de32ad7be0d1b5c0df0f07b57bad4791ac1c55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ead8bd35180cfbe3108ebefed4de32ad7be0d1b5c0df0f07b57bad4791ac1c55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ead8bd35180cfbe3108ebefed4de32ad7be0d1b5c0df0f07b57bad4791ac1c55", kill_on_drop: false }`
[INFO] [stdout] ead8bd35180cfbe3108ebefed4de32ad7be0d1b5c0df0f07b57bad4791ac1c55
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] b0fb60438d924cd6c649f6875df6ed3c76e60faef3c8d97afc183e3fe14df69c
[INFO] running `Command { std: "docker" "start" "-a" "b0fb60438d924cd6c649f6875df6ed3c76e60faef3c8d97afc183e3fe14df69c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]     Checking futures-sink v0.3.19
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]     Checking arc-swap v0.4.7
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]     Checking futures-io v0.3.19
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]    Compiling serde v1.0.131
[INFO] [stderr]     Checking gzb_binary_69 v0.2.2
[INFO] [stderr]     Checking cidr v0.2.1
[INFO] [stderr]     Checking sha2 v0.9.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking atomic_refcell v0.1.8
[INFO] [stderr]     Checking quoted_printable v0.4.5
[INFO] [stderr]    Compiling new_mime_guess v4.0.0
[INFO] [stderr]     Checking rustls-pemfile v0.2.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.8.0
[INFO] [stderr]     Checking signal-hook-registry v1.2.1
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking ring v0.16.20
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking nanorand v0.6.1
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking resolv-conf v0.7.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking dns-lookup v1.0.8
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking sha256 v1.0.3
[INFO] [stderr]     Checking blob-uuid v0.4.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking unique_id v0.1.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking rustls v0.20.0
[INFO] [stderr]    Compiling futures-macro v0.3.19
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling enum-as-inner v0.4.0
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking pin-project v1.0.8
[INFO] [stderr]     Checking flume v0.10.9
[INFO] [stderr]     Checking futures-executor v0.3.19
[INFO] [stderr]     Checking futures v0.3.19
[INFO] [stderr]     Checking trust-dns-proto v0.21.1
[INFO] [stderr]     Checking trust-dns-proto v0.20.3
[INFO] [stderr]     Checking tokio-rustls v0.23.1
[INFO] [stderr]     Checking rustque v1.1.1
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking trust-dns-resolver v0.20.3
[INFO] [stderr]     Checking trust-dns-resolver v0.21.1
[INFO] [stderr]     Checking tokio_spf_validator v1.0.3
[INFO] [stderr]     Checking letterman_email_body_parser v1.0.5
[INFO] [stderr]     Checking letterman v0.2.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `md5` is imported redundantly
[INFO] [stdout]  --> src/common.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use md5;
[INFO] [stdout]   |     ^^^ the item `md5` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `md5` is imported redundantly
[INFO] [stdout]  --> src/common.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use md5;
[INFO] [stdout]   |     ^^^ the item `md5` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.14s
[INFO] running `Command { std: "docker" "inspect" "b0fb60438d924cd6c649f6875df6ed3c76e60faef3c8d97afc183e3fe14df69c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0fb60438d924cd6c649f6875df6ed3c76e60faef3c8d97afc183e3fe14df69c", kill_on_drop: false }`
[INFO] [stdout] b0fb60438d924cd6c649f6875df6ed3c76e60faef3c8d97afc183e3fe14df69c