[INFO] fetching crate letterman 0.2.7...
[INFO] checking letterman-0.2.7 against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] extracting crate letterman 0.2.7 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate letterman 0.2.7
[INFO] finished tweaking crates.io crate letterman 0.2.7
[INFO] tweaked toml for crates.io crate letterman 0.2.7 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate letterman 0.2.7 on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 250 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.13.1 (available: v0.22.1)
[INFO] [stderr]       Adding dns-lookup v1.0.8 (available: v3.0.0)
[INFO] [stderr]       Adding flume v0.10.14 (available: v0.11.1)
[INFO] [stderr]       Adding md5 v0.7.0 (available: v0.8.0)
[INFO] [stderr]       Adding quoted_printable v0.4.8 (available: v0.5.1)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rustls-pemfile v0.2.1 (available: v2.2.0)
[INFO] [stderr]       Adding tokio-rustls v0.23.4 (available: v0.26.2)
[INFO] [stderr]       Adding trust-dns-resolver v0.20.4 (available: v0.23.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unique_id v0.1.7
[INFO] [stderr]   Downloaded tokio_spf_validator v1.0.3
[INFO] [stderr]   Downloaded cidr v0.2.3
[INFO] [stderr]   Downloaded blob-uuid v0.5.0
[INFO] [stderr]   Downloaded new_mime_guess v4.0.4
[INFO] [stderr]   Downloaded gzb_binary_69 v0.2.2
[INFO] [stderr]   Downloaded dns-lookup v1.0.8
[INFO] [stderr]   Downloaded letterman_email_body_parser v1.0.5
[INFO] [stderr]   Downloaded rustque v1.1.1
[INFO] [stderr]   Downloaded trust-dns-proto v0.20.4
[INFO] [stderr]   Downloaded trust-dns-resolver v0.20.4
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce4bc5c0d3661c96169fe94161bd8153f39880fa72fead6ae7b0388f66bbfa66
[INFO] running `Command { std: "docker" "start" "-a" "ce4bc5c0d3661c96169fe94161bd8153f39880fa72fead6ae7b0388f66bbfa66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce4bc5c0d3661c96169fe94161bd8153f39880fa72fead6ae7b0388f66bbfa66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce4bc5c0d3661c96169fe94161bd8153f39880fa72fead6ae7b0388f66bbfa66", kill_on_drop: false }`
[INFO] [stdout] ce4bc5c0d3661c96169fe94161bd8153f39880fa72fead6ae7b0388f66bbfa66
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 993e450bbad532537cca9bc0698d1f504eb2585a98f122489b64a975744f7bd9
[INFO] running `Command { std: "docker" "start" "-a" "993e450bbad532537cca9bc0698d1f504eb2585a98f122489b64a975744f7bd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]    Compiling enum-as-inner v0.4.0
[INFO] [stderr]    Compiling enum-as-inner v0.3.4
[INFO] [stderr]    Compiling rustls v0.20.9
[INFO] [stderr]    Compiling new_mime_guess v4.0.4
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]     Checking crossbeam-channel v0.5.15
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
[INFO] [stderr]     Checking gzb_binary_69 v0.2.2
[INFO] [stderr]     Checking quoted_printable v0.4.8
[INFO] [stderr]     Checking cidr v0.2.3
[INFO] [stderr]     Checking rustls-pemfile v0.2.1
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.9
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking parking_lot_core v0.9.11
[INFO] [stderr]     Checking socket2 v0.6.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.6
[INFO] [stderr]     Checking mio v1.0.4
[INFO] [stderr]     Checking openssl-sys v0.9.109
[INFO] [stderr]     Checking getrandom v0.3.3
[INFO] [stderr]     Checking parking_lot_core v0.8.6
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ring v0.17.14
[INFO] [stderr]     Checking nanorand v0.7.0
[INFO] [stderr]     Checking dns-lookup v1.0.8
[INFO] [stderr]     Checking uuid v1.18.1
[INFO] [stderr]     Checking parking_lot v0.12.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking flume v0.10.14
[INFO] [stderr]     Checking blob-uuid v0.5.0
[INFO] [stderr]     Checking tokio v1.47.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking unique_id v0.1.7
[INFO] [stderr]     Checking sct v0.7.1
[INFO] [stderr]     Checking webpki v0.22.4
[INFO] [stderr]     Checking openssl v0.10.73
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking native-tls v0.2.14
[INFO] [stderr]     Checking trust-dns-proto v0.21.2
[INFO] [stderr]     Checking trust-dns-proto v0.20.4
[INFO] [stderr]     Checking rustque v1.1.1
[INFO] [stderr]     Checking sha256 v1.6.0
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
[INFO] [stderr]     Checking trust-dns-resolver v0.20.4
[INFO] [stderr]     Checking trust-dns-resolver v0.21.2
[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: unused return value of `must_use` that must be used
[INFO] [stdout]   --> src/common.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         format!("!!! {:?}",v);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let _ = format!("!!! {:?}",v);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> src/common.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         format!("!!! {:?}",v);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let _ = format!("!!! {:?}",v);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.60s
[INFO] running `Command { std: "docker" "inspect" "993e450bbad532537cca9bc0698d1f504eb2585a98f122489b64a975744f7bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "993e450bbad532537cca9bc0698d1f504eb2585a98f122489b64a975744f7bd9", kill_on_drop: false }`
[INFO] [stdout] 993e450bbad532537cca9bc0698d1f504eb2585a98f122489b64a975744f7bd9