[INFO] fetching crate rproxy 0.1.7...
[INFO] checking rproxy-0.1.7 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate rproxy 0.1.7 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate rproxy 0.1.7
[INFO] finished tweaking crates.io crate rproxy 0.1.7
[INFO] tweaked toml for crates.io crate rproxy 0.1.7 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rproxy 0.1.7 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rproxy 0.1.7 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded argh v0.1.7
[INFO] [stderr]   Downloaded log4rs v1.1.1
[INFO] [stderr]   Downloaded argh_shared v0.1.7
[INFO] [stderr]   Downloaded num_cpus v1.11.1
[INFO] [stderr]   Downloaded argh_derive v0.1.7
[INFO] [stderr]   Downloaded futures-macro v0.3.26
[INFO] [stderr]   Downloaded futures v0.3.26
[INFO] [stderr]   Downloaded serde_repr v0.1.10
[INFO] [stderr]   Downloaded cargo_metadata v0.10.0
[INFO] [stderr]   Downloaded futures-executor v0.3.26
[INFO] [stderr]   Downloaded cargo-strip v0.2.3
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01f5e9606fc487754807b5329d0ae0baf418672ae04dd018c8132b9cb6bd7edc
[INFO] running `Command { std: "docker" "start" "-a" "01f5e9606fc487754807b5329d0ae0baf418672ae04dd018c8132b9cb6bd7edc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01f5e9606fc487754807b5329d0ae0baf418672ae04dd018c8132b9cb6bd7edc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01f5e9606fc487754807b5329d0ae0baf418672ae04dd018c8132b9cb6bd7edc", kill_on_drop: false }`
[INFO] [stdout] 01f5e9606fc487754807b5329d0ae0baf418672ae04dd018c8132b9cb6bd7edc
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eab6a8441e659317eb9c06bdddd8a40edc4cff06122031d8295d4c222e6ad558
[INFO] running `Command { std: "docker" "start" "-a" "eab6a8441e659317eb9c06bdddd8a40edc4cff06122031d8295d4c222e6ad558", kill_on_drop: false }`
[INFO] [stderr] warning: rproxy v0.1.7 (/opt/rustwide/workdir) ignoring invalid dependency `cargo-strip` which is missing a lib target
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling futures-core v0.3.26
[INFO] [stderr]    Compiling futures-channel v0.3.26
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.51/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 log v0.4.8
[INFO] [stderr]    Compiling futures-task v0.3.26
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking futures-sink v0.3.26
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling futures-util v0.3.26
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling anyhow v1.0.58
[INFO] [stderr]     Checking hashbrown v0.12.1
[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" "eab6a8441e659317eb9c06bdddd8a40edc4cff06122031d8295d4c222e6ad558", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eab6a8441e659317eb9c06bdddd8a40edc4cff06122031d8295d4c222e6ad558", kill_on_drop: false }`
[INFO] [stdout] eab6a8441e659317eb9c06bdddd8a40edc4cff06122031d8295d4c222e6ad558