[INFO] fetching crate busybee 0.2.0...
[INFO] checking busybee-0.2.0 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate busybee 0.2.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate busybee 0.2.0 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate busybee 0.2.0
[INFO] finished tweaking crates.io crate busybee 0.2.0
[INFO] tweaked toml for crates.io crate busybee 0.2.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate busybee 0.2.0 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" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zerror_core v0.2.2
[INFO] [stderr]   Downloaded arrrg v0.1.4
[INFO] [stderr]   Downloaded rpc_pb v0.2.0
[INFO] [stderr]   Downloaded semver v1.0.17
[INFO] [stderr]   Downloaded derive_util v0.1.2
[INFO] [stderr]   Downloaded arrrg_derive v0.1.1
[INFO] [stderr]   Downloaded sync42 v0.2.0
[INFO] [stderr]   Downloaded utilz v0.1.1
[INFO] [stderr]   Downloaded guacamole v0.2.1
[INFO] [stderr]   Downloaded split_channel v0.2.0
[INFO] [stderr]   Downloaded clang-sys v1.6.1
[INFO] [stderr]   Downloaded buffertk v0.3.0
[INFO] [stderr]   Downloaded prototk v0.2.2
[INFO] [stderr]   Downloaded cmake v0.1.50
[INFO] [stderr]   Downloaded prototk_derive v0.3.0
[INFO] [stderr]   Downloaded syn v2.0.13
[INFO] [stderr]   Downloaded indicio v0.1.1
[INFO] [stderr]   Downloaded one_two_eight v0.2.0
[INFO] [stderr]   Downloaded libc v0.2.141
[INFO] [stderr]   Downloaded biometrics v0.3.0
[INFO] [stderr]   Downloaded zerror v0.1.1
[INFO] [stderr]   Downloaded tatl v0.2.1
[INFO] [stderr]   Downloaded boring v2.1.0
[INFO] [stderr]   Downloaded crc32c v0.6.3
[INFO] [stderr]   Downloaded boring-sys v2.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c085b7582022f96a5c9b5819a675455332dc1247617181538746d575b695668
[INFO] running `Command { std: "docker" "start" "-a" "6c085b7582022f96a5c9b5819a675455332dc1247617181538746d575b695668", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c085b7582022f96a5c9b5819a675455332dc1247617181538746d575b695668", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c085b7582022f96a5c9b5819a675455332dc1247617181538746d575b695668", kill_on_drop: false }`
[INFO] [stdout] 6c085b7582022f96a5c9b5819a675455332dc1247617181538746d575b695668
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4563a12487826da629b08af251f1deab0d922f529e670fe8078a81d7769f247
[INFO] running `Command { std: "docker" "start" "-a" "b4563a12487826da629b08af251f1deab0d922f529e670fe8078a81d7769f247", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling buffertk v0.3.0
[INFO] [stderr]     Checking zerror v0.1.1
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling bindgen v0.60.1
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]     Checking biometrics v0.3.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling cmake v0.1.50
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking foreign-types-shared v0.3.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking sync42 v0.2.0
[INFO] [stderr]    Compiling clang-sys v1.6.1
[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 rustc_version v0.4.0
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stdout] error: aborting due to 1 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" "b4563a12487826da629b08af251f1deab0d922f529e670fe8078a81d7769f247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4563a12487826da629b08af251f1deab0d922f529e670fe8078a81d7769f247", kill_on_drop: false }`
[INFO] [stdout] b4563a12487826da629b08af251f1deab0d922f529e670fe8078a81d7769f247
