[INFO] cloning repository https://github.com/Dezzmeister/rust-miner-kernel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dezzmeister/rust-miner-kernel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDezzmeister%2Frust-miner-kernel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDezzmeister%2Frust-miner-kernel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2bea8a759328c19115e455f33e7682f95e53f58
[INFO] building Dezzmeister/rust-miner-kernel against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDezzmeister%2Frust-miner-kernel" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Dezzmeister/rust-miner-kernel on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Dezzmeister/rust-miner-kernel
[INFO] finished tweaking git repo https://github.com/Dezzmeister/rust-miner-kernel
[INFO] tweaked toml for git repo https://github.com/Dezzmeister/rust-miner-kernel written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Dezzmeister/rust-miner-kernel 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" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cuda_std_macros v0.2.0
[INFO] [stderr]   Downloaded vek v0.15.8
[INFO] [stderr]   Downloaded cuda_std v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d786030f2d30bf98e45e45b82cfdaf8c87766dde351a3e796be8f6a8ab772e61
[INFO] running `Command { std: "docker" "start" "-a" "d786030f2d30bf98e45e45b82cfdaf8c87766dde351a3e796be8f6a8ab772e61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d786030f2d30bf98e45e45b82cfdaf8c87766dde351a3e796be8f6a8ab772e61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d786030f2d30bf98e45e45b82cfdaf8c87766dde351a3e796be8f6a8ab772e61", kill_on_drop: false }`
[INFO] [stdout] d786030f2d30bf98e45e45b82cfdaf8c87766dde351a3e796be8f6a8ab772e61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e162bb0ad16408e60640be29fd8947c714ae755205830a505c2a8cb925005f6
[INFO] running `Command { std: "docker" "start" "-a" "9e162bb0ad16408e60640be29fd8947c714ae755205830a505c2a8cb925005f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libm v0.2.5
[INFO] [stderr]    Compiling semver v1.0.14
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling paste v1.0.9
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[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] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling vek v0.15.8
[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" "9e162bb0ad16408e60640be29fd8947c714ae755205830a505c2a8cb925005f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e162bb0ad16408e60640be29fd8947c714ae755205830a505c2a8cb925005f6", kill_on_drop: false }`
[INFO] [stdout] 9e162bb0ad16408e60640be29fd8947c714ae755205830a505c2a8cb925005f6
