[INFO] fetching crate didcomm 0.4.1...
[INFO] checking didcomm-0.4.1 against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] extracting crate didcomm 0.4.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate didcomm 0.4.1 on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate didcomm 0.4.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate didcomm 0.4.1
[INFO] tweaked toml for crates.io crate didcomm 0.4.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate didcomm 0.4.1 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" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded darling v0.12.4
[INFO] [stderr]   Downloaded darling_core v0.12.4
[INFO] [stderr]   Downloaded serde-enum-str v0.1.4
[INFO] [stderr]   Downloaded darling_macro v0.12.4
[INFO] [stderr]   Downloaded rfc6979 v0.1.0
[INFO] [stderr]   Downloaded bit_utils v0.1.1
[INFO] [stderr]   Downloaded varint v0.9.0
[INFO] [stderr]   Downloaded signature v1.4.0
[INFO] [stderr]   Downloaded cpufeatures v0.1.5
[INFO] [stderr]   Downloaded salsa20 v0.8.0
[INFO] [stderr]   Downloaded chacha20 v0.7.1
[INFO] [stderr]   Downloaded xsalsa20poly1305 v0.7.1
[INFO] [stderr]   Downloaded chacha20poly1305 v0.8.0
[INFO] [stderr]   Downloaded x25519-dalek v1.1.1
[INFO] [stderr]   Downloaded k256 v0.10.4
[INFO] [stderr]   Downloaded p256 v0.10.1
[INFO] [stderr]   Downloaded hkdf v0.12.3
[INFO] [stderr]   Downloaded elliptic-curve v0.11.12
[INFO] [stderr]   Downloaded serde-json-core v0.4.0
[INFO] [stderr]   Downloaded crypto_box v0.6.0
[INFO] [stderr]   Downloaded group v0.11.0
[INFO] [stderr]   Downloaded sec1 v0.2.1
[INFO] [stderr]   Downloaded ecdsa v0.13.4
[INFO] [stderr]   Downloaded ff v0.11.1
[INFO] [stderr]   Downloaded bls12_381 v0.6.1
[INFO] [stderr]   Downloaded csv v1.2.1
[INFO] [stderr]   Downloaded askar-crypto v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e057fca475830184c2329ccbe80b6ce3177ed3a9b4f3e0aef9e52981217716e
[INFO] running `Command { std: "docker" "start" "-a" "3e057fca475830184c2329ccbe80b6ce3177ed3a9b4f3e0aef9e52981217716e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e057fca475830184c2329ccbe80b6ce3177ed3a9b4f3e0aef9e52981217716e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e057fca475830184c2329ccbe80b6ce3177ed3a9b4f3e0aef9e52981217716e", kill_on_drop: false }`
[INFO] [stdout] 3e057fca475830184c2329ccbe80b6ce3177ed3a9b4f3e0aef9e52981217716e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e8b164306ac87da87f3202e99ff3d661f91626c657e63a7af6182441479bc15
[INFO] running `Command { std: "docker" "start" "-a" "9e8b164306ac87da87f3202e99ff3d661f91626c657e63a7af6182441479bc15", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]     Checking cpufeatures v0.2.7
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]     Checking const-oid v0.7.1
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking der v0.5.1
[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 futures-core v0.3.28
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]     Checking rand_core v0.5.1
[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" "9e8b164306ac87da87f3202e99ff3d661f91626c657e63a7af6182441479bc15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e8b164306ac87da87f3202e99ff3d661f91626c657e63a7af6182441479bc15", kill_on_drop: false }`
[INFO] [stdout] 9e8b164306ac87da87f3202e99ff3d661f91626c657e63a7af6182441479bc15