[INFO] fetching crate mawby 0.1.0...
[INFO] checking mawby-0.1.0 against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] extracting crate mawby 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate mawby 0.1.0 on toolchain 39cb3386ddc6c71657418be28dbb3987eea4aa4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mawby 0.1.0
[INFO] finished tweaking crates.io crate mawby 0.1.0
[INFO] tweaked toml for crates.io crate mawby 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate mawby 0.1.0 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" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pest_derive v2.5.4
[INFO] [stderr]   Downloaded pest_generator v2.5.4
[INFO] [stderr]   Downloaded tera v1.17.1
[INFO] [stderr]   Downloaded pest_meta v2.5.4
[INFO] [stderr]   Downloaded tokio-test v0.4.2
[INFO] [stderr]   Downloaded pest v2.5.4
[INFO] [stderr]   Downloaded pkcs7 v0.3.0
[INFO] [stderr]   Downloaded atomic-waker v1.1.0
[INFO] [stderr]   Downloaded paste v1.0.11
[INFO] [stderr]   Downloaded bytestring v1.2.0
[INFO] [stderr]   Downloaded zstd v0.12.2+zstd.1.5.2
[INFO] [stderr]   Downloaded ruma-macros v0.10.5
[INFO] [stderr]   Downloaded log4rs v1.2.0
[INFO] [stderr]   Downloaded ruma-client-api v0.15.3
[INFO] [stderr]   Downloaded matrix-sdk v0.6.2
[INFO] [stderr]   Downloaded futures-signals v0.3.31
[INFO] [stderr]   Downloaded actix-http v3.3.0
[INFO] [stderr]   Downloaded matrix-sdk-crypto v0.6.0
[INFO] [stderr]   Downloaded brotli-decompressor v2.3.4
[INFO] [stderr]   Downloaded blake3 v1.3.3
[INFO] [stderr]   Downloaded ruma-common v0.10.5
[INFO] [stderr]   Downloaded actix-web v4.3.0
[INFO] [stderr]   Downloaded bstr v1.2.0
[INFO] [stderr]   Downloaded matrix-sdk-base v0.6.1
[INFO] [stderr]   Downloaded vodozemac v0.3.0
[INFO] [stderr]   Downloaded snafu v0.7.4
[INFO] [stderr]   Downloaded actix-router v0.5.1
[INFO] [stderr]   Downloaded actix-web-codegen v4.1.0
[INFO] [stderr]   Downloaded polling v2.5.2
[INFO] [stderr]   Downloaded async-io v1.12.0
[INFO] [stderr]   Downloaded chrono-tz v0.6.3
[INFO] [stderr]   Downloaded matrix-sdk-indexeddb v0.2.0
[INFO] [stderr]   Downloaded fs_extra v1.2.0
[INFO] [stderr]   Downloaded async-trait v0.1.64
[INFO] [stderr]   Downloaded prost v0.11.6
[INFO] [stderr]   Downloaded js_int v0.2.2
[INFO] [stderr]   Downloaded ruma-federation-api v0.6.0
[INFO] [stderr]   Downloaded pwhash v1.0.0
[INFO] [stderr]   Downloaded blocking v1.3.0
[INFO] [stderr]   Downloaded http-auth-basic v0.3.3
[INFO] [stderr]   Downloaded ordered-float v2.10.0
[INFO] [stderr]   Downloaded async-once-cell v0.3.1
[INFO] [stderr]   Downloaded indexed_db_futures v0.2.3
[INFO] [stderr]   Downloaded lru v0.8.1
[INFO] [stderr]   Downloaded serde_bytes v0.11.8
[INFO] [stderr]   Downloaded zstd-sys v2.0.5+zstd.1.5.2
[INFO] [stderr]   Downloaded prost-derive v0.11.6
[INFO] [stderr]   Downloaded matrix-sdk-sled v0.2.0
[INFO] [stderr]   Downloaded thread-id v4.0.0
[INFO] [stderr]   Downloaded matrix-sdk-common v0.6.0
[INFO] [stderr]   Downloaded constant_time_eq v0.2.4
[INFO] [stderr]   Downloaded ruma-identifiers-validation v0.9.0
[INFO] [stderr]   Downloaded wildmatch v2.1.1
[INFO] [stderr]   Downloaded ruma v0.7.4
[INFO] [stderr]   Downloaded blowfish v0.7.0
[INFO] [stderr]   Downloaded snafu-derive v0.7.4
[INFO] [stderr]   Downloaded chrono-tz-build v0.0.3
[INFO] [stderr]   Downloaded matrix-sdk-store-encryption v0.2.0
[INFO] [stderr]   Downloaded assign v1.1.1
[INFO] [stderr]   Downloaded js_option v0.1.1
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b678e3ed82c5b72734f41d1fcf3f55925917886785bfed8f6c03b53616d7f969
[INFO] running `Command { std: "docker" "start" "-a" "b678e3ed82c5b72734f41d1fcf3f55925917886785bfed8f6c03b53616d7f969", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b678e3ed82c5b72734f41d1fcf3f55925917886785bfed8f6c03b53616d7f969", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b678e3ed82c5b72734f41d1fcf3f55925917886785bfed8f6c03b53616d7f969", kill_on_drop: false }`
[INFO] [stdout] b678e3ed82c5b72734f41d1fcf3f55925917886785bfed8f6c03b53616d7f969
[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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9902c96c9be84b71c86124e54b01159530dd08a71842b60fc7062e187c69c39
[INFO] running `Command { std: "docker" "start" "-a" "e9902c96c9be84b71c86124e54b01159530dd08a71842b60fc7062e187c69c39", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.50
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling libc v0.2.139
[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 typenum v1.16.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.9
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking once_cell v1.17.0
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.50/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]     Checking bytes v1.3.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[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 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e9902c96c9be84b71c86124e54b01159530dd08a71842b60fc7062e187c69c39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9902c96c9be84b71c86124e54b01159530dd08a71842b60fc7062e187c69c39", kill_on_drop: false }`
[INFO] [stdout] e9902c96c9be84b71c86124e54b01159530dd08a71842b60fc7062e187c69c39
