[INFO] fetching crate yrs-webrtc 0.1.0...
[INFO] checking yrs-webrtc-0.1.0 against try#377afada703be70d3fdff9164a481570a3cba7fe for pr-113240
[INFO] extracting crate yrs-webrtc 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate yrs-webrtc 0.1.0 on toolchain 377afada703be70d3fdff9164a481570a3cba7fe
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+377afada703be70d3fdff9164a481570a3cba7fe" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yrs-webrtc 0.1.0
[INFO] finished tweaking crates.io crate yrs-webrtc 0.1.0
[INFO] tweaked toml for crates.io crate yrs-webrtc 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate yrs-webrtc 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" "+377afada703be70d3fdff9164a481570a3cba7fe" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+377afada703be70d3fdff9164a481570a3cba7fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96eb6a220f263743334f8ac299e93bb13a884a0bab2c860d3ef4afd0a806c6a8
[INFO] running `Command { std: "docker" "start" "-a" "96eb6a220f263743334f8ac299e93bb13a884a0bab2c860d3ef4afd0a806c6a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96eb6a220f263743334f8ac299e93bb13a884a0bab2c860d3ef4afd0a806c6a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96eb6a220f263743334f8ac299e93bb13a884a0bab2c860d3ef4afd0a806c6a8", kill_on_drop: false }`
[INFO] [stdout] 96eb6a220f263743334f8ac299e93bb13a884a0bab2c860d3ef4afd0a806c6a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+377afada703be70d3fdff9164a481570a3cba7fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5aa90220645984c57b06550c4c5a3c0af73c670b7b785f9567a0a08cd230093
[INFO] running `Command { std: "docker" "start" "-a" "d5aa90220645984c57b06550c4c5a3c0af73c670b7b785f9567a0a08cd230093", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling tokio v1.28.0
[INFO] [stderr]     Checking cpufeatures v0.2.7
[INFO] [stderr]    Compiling serde_derive v1.0.162
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling serde v1.0.162
[INFO] [stderr]    Compiling webrtc-util v0.7.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]     Checking ipnet v2.7.2
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]    Compiling time-macros v0.2.8
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking base64ct v1.6.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling openssl-sys v0.9.87
[INFO] [stderr]     Checking pem-rfc7468 v0.6.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking const-oid v0.9.2
[INFO] [stderr]     Checking url v2.3.1
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling strsim v0.10.0
[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 fnv v1.0.7
[INFO] [stderr]    Compiling platforms v3.0.2
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]     Checking crc-catalog v2.2.0
[INFO] [stderr]    Compiling openssl v0.10.52
[INFO] [stderr]     Checking base16ct v0.1.1
[INFO] [stderr]    Compiling oid-registry v0.6.1
[INFO] [stderr]     Checking crc v3.0.1
[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" "d5aa90220645984c57b06550c4c5a3c0af73c670b7b785f9567a0a08cd230093", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5aa90220645984c57b06550c4c5a3c0af73c670b7b785f9567a0a08cd230093", kill_on_drop: false }`
[INFO] [stdout] d5aa90220645984c57b06550c4c5a3c0af73c670b7b785f9567a0a08cd230093