[INFO] cloning repository https://github.com/knrdl/rest2smtp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/knrdl/rest2smtp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknrdl%2Frest2smtp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknrdl%2Frest2smtp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d803d9846232f0b1eff5fd70687da8b081c2a290
[INFO] checking knrdl/rest2smtp against master#6162f6f12339aa81fe16b8a64644ead497e411b2 for pr-113240
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fknrdl%2Frest2smtp" "/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/knrdl/rest2smtp on toolchain 6162f6f12339aa81fe16b8a64644ead497e411b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/knrdl/rest2smtp
[INFO] finished tweaking git repo https://github.com/knrdl/rest2smtp
[INFO] tweaked toml for git repo https://github.com/knrdl/rest2smtp written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/knrdl/rest2smtp 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" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.53
[INFO] [stderr]   Downloaded serde_derive v1.0.158
[INFO] [stderr]   Downloaded is-terminal v0.4.5
[INFO] [stderr]   Downloaded email-encoding v0.2.0
[INFO] [stderr]   Downloaded async-trait v0.1.67
[INFO] [stderr]   Downloaded quoted_printable v0.4.7
[INFO] [stderr]   Downloaded futures v0.3.27
[INFO] [stderr]   Downloaded lettre v0.10.4
[INFO] [stderr]   Downloaded regex v1.7.2
[INFO] [stderr]   Downloaded syn v2.0.5
[INFO] [stderr]   Downloaded email_address v0.2.4
[INFO] [stderr]   Downloaded bitflags v2.0.2
[INFO] [stderr]   Downloaded serde v1.0.158
[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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e685a3de942f5b5f3e63e8c043c78f2b4dbc2741dfc12b2ca1a1064c3c3f8e3d
[INFO] running `Command { std: "docker" "start" "-a" "e685a3de942f5b5f3e63e8c043c78f2b4dbc2741dfc12b2ca1a1064c3c3f8e3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e685a3de942f5b5f3e63e8c043c78f2b4dbc2741dfc12b2ca1a1064c3c3f8e3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e685a3de942f5b5f3e63e8c043c78f2b4dbc2741dfc12b2ca1a1064c3c3f8e3d", kill_on_drop: false }`
[INFO] [stdout] e685a3de942f5b5f3e63e8c043c78f2b4dbc2741dfc12b2ca1a1064c3c3f8e3d
[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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+6162f6f12339aa81fe16b8a64644ead497e411b2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69d18faca811ff54ffeabfdcd97cd90a73d518db5a01fbde50cd188476ff88a3
[INFO] running `Command { std: "docker" "start" "-a" "69d18faca811ff54ffeabfdcd97cd90a73d518db5a01fbde50cd188476ff88a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.53
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling futures-channel v0.3.27
[INFO] [stderr]    Compiling futures-core v0.3.27
[INFO] [stderr]    Compiling serde_derive v1.0.158
[INFO] [stderr]    Compiling tokio v1.26.0
[INFO] [stderr]    Compiling serde v1.0.158
[INFO] [stderr]     Checking futures-sink v0.3.27
[INFO] [stderr]    Compiling futures-task v0.3.27
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling openssl-sys v0.9.90
[INFO] [stderr]    Compiling itoa v1.0.6
[INFO] [stderr]    Compiling time-macros v0.2.8
[INFO] [stderr]    Compiling futures-util v0.3.27
[INFO] [stderr]    Compiling cookie v0.17.0
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.0
[INFO] [stderr]     Checking futures-io v0.3.27
[INFO] [stderr]    Compiling ref-cast v1.0.16
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.9
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling uncased v0.9.7
[INFO] [stderr]    Compiling rustix v0.36.11
[INFO] [stderr]    Compiling bitflags v2.0.2
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.53/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 try-lock v0.2.4
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stdout] error: aborting due to 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" "69d18faca811ff54ffeabfdcd97cd90a73d518db5a01fbde50cd188476ff88a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69d18faca811ff54ffeabfdcd97cd90a73d518db5a01fbde50cd188476ff88a3", kill_on_drop: false }`
[INFO] [stdout] 69d18faca811ff54ffeabfdcd97cd90a73d518db5a01fbde50cd188476ff88a3