[INFO] cloning repository https://github.com/erebe/vSMTP
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/erebe/vSMTP" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferebe%2FvSMTP", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferebe%2FvSMTP'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fd26c87f804426b65124c545debf61738d7ffc9b
[INFO] checking erebe/vSMTP against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferebe%2FvSMTP" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/erebe/vSMTP on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/erebe/vSMTP
[INFO] finished tweaking git repo https://github.com/erebe/vSMTP
[INFO] tweaked toml for git repo https://github.com/erebe/vSMTP written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/erebe/vSMTP 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" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rhai-autodocs v0.1.2
[INFO] [stderr]   Downloaded viaspf-record v0.4.1
[INFO] [stderr]   Downloaded test-log v0.2.11
[INFO] [stderr]   Downloaded lber v0.4.0
[INFO] [stderr]   Downloaded viaspf v0.5.2
[INFO] [stderr]   Downloaded rsa v0.8.1
[INFO] [stderr]   Downloaded ldap3 v0.11.1
[INFO] [stderr]   Downloaded prost-types v0.11.6
[INFO] [stderr]   Downloaded document-features v0.2.7
[INFO] [stderr]   Downloaded console-api v0.4.0
[INFO] [stderr]   Downloaded tracing-journald v0.3.0
[INFO] [stderr]   Downloaded ppp v2.2.0
[INFO] [stderr]   Downloaded prost v0.11.6
[INFO] [stderr]   Downloaded borsh-derive-internal v0.10.0
[INFO] [stderr]   Downloaded lettre v0.10.3
[INFO] [stderr]   Downloaded darling_core v0.14.3
[INFO] [stderr]   Downloaded serde_with_macros v2.2.0
[INFO] [stderr]   Downloaded csv v1.2.0
[INFO] [stderr]   Downloaded serde_with v2.2.0
[INFO] [stderr]   Downloaded prost-derive v0.11.6
[INFO] [stderr]   Downloaded console-subscriber v0.1.8
[INFO] [stderr]   Downloaded borsh-schema-derive-internal v0.10.0
[INFO] [stderr]   Downloaded darling_macro v0.14.3
[INFO] [stderr]   Downloaded darling v0.14.3
[INFO] [stderr]   Downloaded borsh-derive v0.10.0
[INFO] [stderr]   Downloaded borsh v0.10.0
[INFO] [stderr]   Downloaded memcache v0.17.0
[INFO] [stderr]   Downloaded iai v0.1.1
[INFO] [stderr]   Downloaded rhai-dylib v0.1.4
[INFO] [stderr]   Downloaded rsasl v2.0.0
[INFO] [stderr]   Downloaded ed25519 v2.1.0
[INFO] [stderr]   Downloaded ring-compat v0.6.0
[INFO] [stderr]   Downloaded rhai v1.12.0
[INFO] [stderr]   Downloaded acid_io v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59e064a047ea21ac0d00074a765e49081db87e76df2f0e8142f546453239d31b
[INFO] running `Command { std: "docker" "start" "-a" "59e064a047ea21ac0d00074a765e49081db87e76df2f0e8142f546453239d31b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59e064a047ea21ac0d00074a765e49081db87e76df2f0e8142f546453239d31b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59e064a047ea21ac0d00074a765e49081db87e76df2f0e8142f546453239d31b", kill_on_drop: false }`
[INFO] [stdout] 59e064a047ea21ac0d00074a765e49081db87e76df2f0e8142f546453239d31b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20f263de635cb479f0bd1f873978bfcf401b597de14c477b5b3636422981edac
[INFO] running `Command { std: "docker" "start" "-a" "20f263de635cb479f0bd1f873978bfcf401b597de14c477b5b3636422981edac", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling once_cell v1.17.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.51/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling futures-core v0.3.26
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "20f263de635cb479f0bd1f873978bfcf401b597de14c477b5b3636422981edac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20f263de635cb479f0bd1f873978bfcf401b597de14c477b5b3636422981edac", kill_on_drop: false }`
[INFO] [stdout] 20f263de635cb479f0bd1f873978bfcf401b597de14c477b5b3636422981edac