[INFO] cloning repository https://github.com/pakdev/softkvm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pakdev/softkvm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpakdev%2Fsoftkvm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpakdev%2Fsoftkvm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 370c108aff7cd5111aa951a0b4ec38b0562b9357
[INFO] checking pakdev/softkvm against try#e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837 for pr-143619
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpakdev%2Fsoftkvm" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pakdev/softkvm
[INFO] finished tweaking git repo https://github.com/pakdev/softkvm
[INFO] tweaked toml for git repo https://github.com/pakdev/softkvm written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pakdev/softkvm on toolchain e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pakdev/softkvm 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" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nvapi-sys v0.1.3
[INFO] [stderr]   Downloaded widestring v0.3.0
[INFO] [stderr]   Downloaded ddc-winapi v0.2.0
[INFO] [stderr]   Downloaded ddc-macos v0.2.0
[INFO] [stderr]   Downloaded ddc-i2c v0.2.1
[INFO] [stderr]   Downloaded i2c-linux-sys v0.2.1
[INFO] [stderr]   Downloaded edid v0.3.0
[INFO] [stderr]   Downloaded udev v0.2.0
[INFO] [stderr]   Downloaded i2c-linux v0.1.2
[INFO] [stderr]   Downloaded uninitialized v0.0.2
[INFO] [stderr]   Downloaded mccs-caps v0.1.0
[INFO] [stderr]   Downloaded mccs-db v0.1.2
[INFO] [stderr]   Downloaded i2c v0.1.0
[INFO] [stderr]   Downloaded resize-slice v0.1.3
[INFO] [stderr]   Downloaded mccs v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ee006f2938027412ccf686cc9c615edd43336820746955e690cfb25b81779a8
[INFO] running `Command { std: "docker" "start" "-a" "7ee006f2938027412ccf686cc9c615edd43336820746955e690cfb25b81779a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ee006f2938027412ccf686cc9c615edd43336820746955e690cfb25b81779a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ee006f2938027412ccf686cc9c615edd43336820746955e690cfb25b81779a8", kill_on_drop: false }`
[INFO] [stdout] 7ee006f2938027412ccf686cc9c615edd43336820746955e690cfb25b81779a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e5f83f290e4f4cd7335dcb34c2d7bf331135793b5777d7648e23e1986d6ad02
[INFO] running `Command { std: "docker" "start" "-a" "6e5f83f290e4f4cd7335dcb34c2d7bf331135793b5777d7648e23e1986d6ad02", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling uninitialized v0.0.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling anyhow v1.0.65
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking i2c v0.1.0
[INFO] [stderr]     Checking mccs v0.1.0
[INFO] [stderr]    Compiling ddc-hi v0.4.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking resize-slice v0.1.3
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking ddc v0.2.2
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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] [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" "6e5f83f290e4f4cd7335dcb34c2d7bf331135793b5777d7648e23e1986d6ad02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e5f83f290e4f4cd7335dcb34c2d7bf331135793b5777d7648e23e1986d6ad02", kill_on_drop: false }`
[INFO] [stdout] 6e5f83f290e4f4cd7335dcb34c2d7bf331135793b5777d7648e23e1986d6ad02