[INFO] cloning repository https://github.com/0xcrust/falcon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0xcrust/falcon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xcrust%2Ffalcon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xcrust%2Ffalcon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 22efbfa2fd7b9115bec31ac5e4e8aee62944ae71
[INFO] checking 0xcrust/falcon against master#da2544bfbe84df7b24d83c029c74299ebf6112c6 for pr-149681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0xcrust%2Ffalcon" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/0xcrust/falcon
[INFO] finished tweaking git repo https://github.com/0xcrust/falcon
[INFO] tweaked toml for git repo https://github.com/0xcrust/falcon written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/0xcrust/falcon on toolchain da2544bfbe84df7b24d83c029c74299ebf6112c6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/0xcrust/falcon 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" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num_cpus v1.14.0
[INFO] [stderr]   Downloaded actix-web-codegen v0.2.2
[INFO] [stderr]   Downloaded pin-project-internal v0.4.30
[INFO] [stderr]   Downloaded enum-as-inner v0.3.4
[INFO] [stderr]   Downloaded futures-macro v0.3.25
[INFO] [stderr]   Downloaded actix-codec v0.2.0
[INFO] [stderr]   Downloaded actix-testing v1.0.1
[INFO] [stderr]   Downloaded ipnet v2.5.1
[INFO] [stderr]   Downloaded mio v0.8.5
[INFO] [stderr]   Downloaded bytestring v1.2.0
[INFO] [stderr]   Downloaded addr2line v0.17.0
[INFO] [stderr]   Downloaded tokio-util v0.3.1
[INFO] [stderr]   Downloaded actix-router v0.2.7
[INFO] [stderr]   Downloaded pin-project v1.0.12
[INFO] [stderr]   Downloaded trust-dns-resolver v0.18.0-alpha.2
[INFO] [stderr]   Downloaded cxx-build v1.0.81
[INFO] [stderr]   Downloaded mio v0.6.23
[INFO] [stderr]   Downloaded actix-web v2.0.0
[INFO] [stderr]   Downloaded reqwest v0.11.13
[INFO] [stderr]   Downloaded h2 v0.2.7
[INFO] [stderr]   Downloaded actix-http v1.0.1
[INFO] [stderr]   Downloaded cxx v1.0.81
[INFO] [stderr]   Downloaded trust-dns-proto v0.20.4
[INFO] [stderr]   Downloaded trust-dns-proto v0.18.0-alpha.2
[INFO] [stderr]   Downloaded object v0.29.0
[INFO] [stderr]   Downloaded regex v1.7.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.28
[INFO] [stderr]   Downloaded rustls v0.20.7
[INFO] [stderr]   Downloaded webpki-roots v0.22.5
[INFO] [stderr]   Downloaded chrono v0.4.23
[INFO] [stderr]   Downloaded hyper v0.14.23
[INFO] [stderr]   Downloaded h2 v0.3.15
[INFO] [stderr]   Downloaded brotli-sys v0.3.2
[INFO] [stderr]   Downloaded futures-util v0.3.25
[INFO] [stderr]   Downloaded tokio v0.2.25
[INFO] [stderr]   Downloaded backtrace v0.3.66
[INFO] [stderr]   Downloaded futures v0.3.25
[INFO] [stderr]   Downloaded cc v1.0.76
[INFO] [stderr]   Downloaded pin-project v0.4.30
[INFO] [stderr]   Downloaded tokio v1.21.2
[INFO] [stderr]   Downloaded hyper-rustls v0.23.1
[INFO] [stderr]   Downloaded webpki v0.22.0
[INFO] [stderr]   Downloaded tokio-stream v0.1.11
[INFO] [stderr]   Downloaded socket2 v0.3.19
[INFO] [stderr]   Downloaded winreg v0.6.2
[INFO] [stderr]   Downloaded ipconfig v0.2.2
[INFO] [stderr]   Downloaded actix-utils v1.0.6
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.81
[INFO] [stderr]   Downloaded rustc-demangle v0.1.21
[INFO] [stderr]   Downloaded base64 v0.11.0
[INFO] [stderr]   Downloaded gimli v0.26.2
[INFO] [stderr]   Downloaded net2 v0.2.38
[INFO] [stderr]   Downloaded futures-channel v0.3.25
[INFO] [stderr]   Downloaded awc v1.0.1
[INFO] [stderr]   Downloaded futures-executor v0.3.25
[INFO] [stderr]   Downloaded rustls-pemfile v1.0.1
[INFO] [stderr]   Downloaded sct v0.7.0
[INFO] [stderr]   Downloaded async-trait v0.1.58
[INFO] [stderr]   Downloaded data-encoding v2.3.2
[INFO] [stderr]   Downloaded actix-codec v0.3.0
[INFO] [stderr]   Downloaded actix-utils v2.0.0
[INFO] [stderr]   Downloaded actix-server v1.0.4
[INFO] [stderr]   Downloaded actix-tls v1.0.0
[INFO] [stderr]   Downloaded resolv-conf v0.6.3
[INFO] [stderr]   Downloaded tokio-util v0.2.0
[INFO] [stderr]   Downloaded brotli2 v0.3.2
[INFO] [stderr]   Downloaded iana-time-zone v0.1.53
[INFO] [stderr]   Downloaded pin-project-internal v1.0.12
[INFO] [stderr]   Downloaded miow v0.2.2
[INFO] [stderr]   Downloaded actix-rt v1.1.1
[INFO] [stderr]   Downloaded actix-service v1.0.6
[INFO] [stderr]   Downloaded trust-dns-resolver v0.20.4
[INFO] [stderr]   Downloaded actix-connect v1.0.2
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.81
[INFO] [stderr]   Downloaded actix-macros v0.1.3
[INFO] [stderr]   Downloaded actix-threadpool v0.3.3
[INFO] [stderr]   Downloaded dtoa v0.4.8
[INFO] [stderr]   Downloaded serde_urlencoded v0.6.1
[INFO] [stderr]   Downloaded futures-sink v0.3.25
[INFO] [stderr]   Downloaded futures-task v0.3.25
[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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c99bd6e6481a9236cd9be0b09f2ae914a977c791cfa86a7ec3446cd74cdcece7
[INFO] running `Command { std: "docker" "start" "-a" "c99bd6e6481a9236cd9be0b09f2ae914a977c791cfa86a7ec3446cd74cdcece7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c99bd6e6481a9236cd9be0b09f2ae914a977c791cfa86a7ec3446cd74cdcece7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c99bd6e6481a9236cd9be0b09f2ae914a977c791cfa86a7ec3446cd74cdcece7", kill_on_drop: false }`
[INFO] [stdout] c99bd6e6481a9236cd9be0b09f2ae914a977c791cfa86a7ec3446cd74cdcece7
[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=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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+da2544bfbe84df7b24d83c029c74299ebf6112c6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c47456f7c0b4df9212a53785766d395d3c4363519879323324d07cba43df0b1f
[INFO] running `Command { std: "docker" "start" "-a" "c47456f7c0b4df9212a53785766d395d3c4363519879323324d07cba43df0b1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling cc v1.0.76
[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]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]     Checking futures-io v0.3.25
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking once_cell v1.16.0
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[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" "c47456f7c0b4df9212a53785766d395d3c4363519879323324d07cba43df0b1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c47456f7c0b4df9212a53785766d395d3c4363519879323324d07cba43df0b1f", kill_on_drop: false }`
[INFO] [stdout] c47456f7c0b4df9212a53785766d395d3c4363519879323324d07cba43df0b1f
