[INFO] fetching crate letterman 0.2.7...
[INFO] checking letterman-0.2.7 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate letterman 0.2.7 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate letterman 0.2.7 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 209 packages to latest compatible versions
[INFO] [stderr]       Adding addr2line v0.22.0 (latest: v0.24.1)
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.1)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.6.0)
[INFO] [stderr]       Adding core-foundation v0.9.4 (latest: v0.10.0)
[INFO] [stderr]       Adding dns-lookup v1.0.8 (latest: v2.0.4)
[INFO] [stderr]       Adding enum-as-inner v0.3.4 (latest: v0.6.0)
[INFO] [stderr]       Adding enum-as-inner v0.4.0 (latest: v0.6.0)
[INFO] [stderr]       Adding flume v0.10.14 (latest: v0.11.0)
[INFO] [stderr]       Adding foreign-types v0.3.2 (latest: v0.5.0)
[INFO] [stderr]       Adding foreign-types-shared v0.1.1 (latest: v0.3.1)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.1.0)
[INFO] [stderr]       Adding gimli v0.29.0 (latest: v0.31.0)
[INFO] [stderr]       Adding heck v0.4.1 (latest: v0.5.0)
[INFO] [stderr]       Adding hermit-abi v0.3.9 (latest: v0.4.0)
[INFO] [stderr]       Adding hostname v0.3.1 (latest: v0.4.0)
[INFO] [stderr]       Adding idna v0.2.3 (latest: v1.0.2)
[INFO] [stderr]       Adding idna v0.5.0 (latest: v1.0.2)
[INFO] [stderr]       Adding ipconfig v0.2.2 (latest: v0.3.2)
[INFO] [stderr]       Adding linux-raw-sys v0.4.14 (latest: v0.6.5)
[INFO] [stderr]       Adding miniz_oxide v0.7.4 (latest: v0.8.0)
[INFO] [stderr]       Adding parking_lot v0.11.2 (latest: v0.12.3)
[INFO] [stderr]       Adding parking_lot_core v0.8.6 (latest: v0.9.10)
[INFO] [stderr]       Adding quick-error v1.2.3 (latest: v2.0.1)
[INFO] [stderr]       Adding quoted_printable v0.4.8 (latest: v0.5.1)
[INFO] [stderr]       Adding redox_syscall v0.2.16 (latest: v0.5.3)
[INFO] [stderr]       Adding ring v0.16.20 (latest: v0.17.8)
[INFO] [stderr]       Adding rustls v0.20.9 (latest: v0.23.12)
[INFO] [stderr]       Adding rustls-pemfile v0.2.1 (latest: v2.1.3)
[INFO] [stderr]       Adding socket2 v0.3.19 (latest: v0.5.7)
[INFO] [stderr]       Adding socket2 v0.4.10 (latest: v0.5.7)
[INFO] [stderr]       Adding spin v0.5.2 (latest: v0.9.8)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] [stderr]       Adding tokio-rustls v0.23.4 (latest: v0.26.0)
[INFO] [stderr]       Adding trust-dns-proto v0.20.4 (latest: v0.23.2)
[INFO] [stderr]       Adding trust-dns-proto v0.21.2 (latest: v0.23.2)
[INFO] [stderr]       Adding trust-dns-resolver v0.20.4 (latest: v0.23.2)
[INFO] [stderr]       Adding trust-dns-resolver v0.21.2 (latest: v0.23.2)
[INFO] [stderr]       Adding untrusted v0.7.1 (latest: v0.9.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding widestring v0.4.3 (latest: v1.1.0)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.58.0)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.59.0)
[INFO] [stderr]       Adding windows-sys v0.52.0 (latest: v0.59.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.6)
[INFO] [stderr]       Adding winreg v0.6.2 (latest: v0.52.0)
[INFO] [stderr]       Adding winreg v0.50.0 (latest: v0.52.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sha256 v1.5.0
[INFO] [stderr]   Downloaded tokio_spf_validator v1.0.3
[INFO] [stderr]   Downloaded trust-dns-resolver v0.20.4
[INFO] [stderr]   Downloaded quoted_printable v0.4.8
[INFO] [stderr]   Downloaded cidr v0.2.3
[INFO] [stderr]   Downloaded dns-lookup v1.0.8
[INFO] [stderr]   Downloaded letterman_email_body_parser v1.0.5
[INFO] [stderr]   Downloaded new_mime_guess v4.0.4
[INFO] [stderr]   Downloaded gzb_binary_69 v0.2.2
[INFO] [stderr]   Downloaded rustque v1.1.1
[INFO] [stderr]   Downloaded trust-dns-proto v0.20.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d28f411184281b36d22bc3671e606d4dee24be905a2157177dda1b9210ccbc6
[INFO] running `Command { std: "docker" "start" "-a" "7d28f411184281b36d22bc3671e606d4dee24be905a2157177dda1b9210ccbc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d28f411184281b36d22bc3671e606d4dee24be905a2157177dda1b9210ccbc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d28f411184281b36d22bc3671e606d4dee24be905a2157177dda1b9210ccbc6", kill_on_drop: false }`
[INFO] [stdout] 7d28f411184281b36d22bc3671e606d4dee24be905a2157177dda1b9210ccbc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 384e8a535820617ee4936b38019d6ff5c9a4dcc00e04af10f2f736a8f2f7a66c
[INFO] running `Command { std: "docker" "start" "-a" "384e8a535820617ee4936b38019d6ff5c9a4dcc00e04af10f2f736a8f2f7a66c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]     Checking instant v0.1.13
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling enum-as-inner v0.3.4
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling enum-as-inner v0.4.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling rustls v0.20.9
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking crossbeam-queue v0.3.11
[INFO] [stderr]    Compiling new_mime_guess v4.0.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.13
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking gzb_binary_69 v0.2.2
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking quoted_printable v0.4.8
[INFO] [stderr]     Checking cidr v0.2.3
[INFO] [stderr]     Checking rustls-pemfile v0.2.1
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[INFO] [stderr]     Checking md5 v0.7.0
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[INFO] [stderr]     Checking rustque v1.1.1
[INFO] [stderr]     Checking sha256 v1.5.0
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking native-tls v0.2.12
[INFO] [stderr]     Checking tokio-native-tls v0.3.1
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[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]    = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[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]    = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.07s
[INFO] running `Command { std: "docker" "inspect" "384e8a535820617ee4936b38019d6ff5c9a4dcc00e04af10f2f736a8f2f7a66c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "384e8a535820617ee4936b38019d6ff5c9a4dcc00e04af10f2f736a8f2f7a66c", kill_on_drop: false }`
[INFO] [stdout] 384e8a535820617ee4936b38019d6ff5c9a4dcc00e04af10f2f736a8f2f7a66c