[INFO] fetching crate mailtutan 0.3.0...
[INFO] checking mailtutan-0.3.0 against master#c2f2db79ca3024f68d22b45aa22b570775c2c4ad for pr-124157
[INFO] extracting crate mailtutan 0.3.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate mailtutan 0.3.0 on toolchain c2f2db79ca3024f68d22b45aa22b570775c2c4ad
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mailtutan 0.3.0
[INFO] finished tweaking crates.io crate mailtutan 0.3.0
[INFO] tweaked toml for crates.io crate mailtutan 0.3.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate mailtutan 0.3.0 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" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ternop v1.0.1
[INFO] [stderr]   Downloaded mailin-embedded v0.8.1
[INFO] [stderr]   Downloaded uuid v1.3.3
[INFO] [stderr]   Downloaded bufstream-fresh v0.3.0
[INFO] [stderr]   Downloaded mailin v0.6.3
[INFO] [stderr]   Downloaded base64-compat v1.0.0
[INFO] [stderr]   Downloaded headers v0.3.8
[INFO] [stderr]   Downloaded mailtutan-lib v0.3.0
[INFO] [stderr]   Downloaded mail-parser v0.8.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4096f7e4bc3e375a6272106183fc5c99679072b295243331491de76981f6e96
[INFO] running `Command { std: "docker" "start" "-a" "f4096f7e4bc3e375a6272106183fc5c99679072b295243331491de76981f6e96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4096f7e4bc3e375a6272106183fc5c99679072b295243331491de76981f6e96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4096f7e4bc3e375a6272106183fc5c99679072b295243331491de76981f6e96", kill_on_drop: false }`
[INFO] [stdout] f4096f7e4bc3e375a6272106183fc5c99679072b295243331491de76981f6e96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+c2f2db79ca3024f68d22b45aa22b570775c2c4ad" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be02f9d99a8a35b5cd27d7c50a08f34e3dea399b3c8c24099196143ddbbeda15
[INFO] running `Command { std: "docker" "start" "-a" "be02f9d99a8a35b5cd27d7c50a08f34e3dea399b3c8c24099196143ddbbeda15", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling rustversion v1.0.12
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling tokio v1.28.1
[INFO] [stderr]     Checking percent-encoding v2.3.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.56/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 io-lifetimes v1.0.11
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]     Checking form_urlencoded v1.2.0
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]     Checking cpufeatures v0.2.7
[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" "be02f9d99a8a35b5cd27d7c50a08f34e3dea399b3c8c24099196143ddbbeda15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be02f9d99a8a35b5cd27d7c50a08f34e3dea399b3c8c24099196143ddbbeda15", kill_on_drop: false }`
[INFO] [stdout] be02f9d99a8a35b5cd27d7c50a08f34e3dea399b3c8c24099196143ddbbeda15
