[INFO] fetching crate pr47 0.1.4-CHARLIE...
[INFO] testing pr47-0.1.4-CHARLIE against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate pr47 0.1.4-CHARLIE into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate pr47 0.1.4-CHARLIE
[INFO] finished tweaking crates.io crate pr47 0.1.4-CHARLIE
[INFO] tweaked toml for crates.io crate pr47 0.1.4-CHARLIE written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pr47 0.1.4-CHARLIE on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pr47 0.1.4-CHARLIE 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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-io v1.12.0
[INFO] [stderr]   Downloaded phf_macros v0.11.1
[INFO] [stderr]   Downloaded variant_count v1.1.0
[INFO] [stderr]   Downloaded phf v0.11.1
[INFO] [stderr]   Downloaded pr47-codegen v0.0.2
[INFO] [stderr]   Downloaded phf_shared v0.11.1
[INFO] [stderr]   Downloaded blocking v1.3.0
[INFO] [stderr]   Downloaded xjbutil v0.9.0-CHARLIE
[INFO] [stderr]   Downloaded async-lock v2.6.0
[INFO] [stderr]   Downloaded unchecked_unwrap v4.0.0
[INFO] [stderr]   Downloaded atomic-waker v1.1.0
[INFO] [stderr]   Downloaded phf_generator v0.11.1
[INFO] [stderr]   Downloaded async-task v4.3.0
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc7191f714382238e6fc863510f648ebfccb03e177485e2e91cf0125499bc96f
[INFO] running `Command { std: "docker" "start" "-a" "bc7191f714382238e6fc863510f648ebfccb03e177485e2e91cf0125499bc96f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc7191f714382238e6fc863510f648ebfccb03e177485e2e91cf0125499bc96f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc7191f714382238e6fc863510f648ebfccb03e177485e2e91cf0125499bc96f", kill_on_drop: false }`
[INFO] [stdout] bc7191f714382238e6fc863510f648ebfccb03e177485e2e91cf0125499bc96f
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bcd0ac8335dcdc0ec5d3461c7c5510a9f0c1bfb0157c8502ead0fb72ab238239
[INFO] running `Command { std: "docker" "start" "-a" "bcd0ac8335dcdc0ec5d3461c7c5510a9f0c1bfb0157c8502ead0fb72ab238239", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.26
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling futures-task v0.3.26
[INFO] [stderr]    Compiling futures-channel v0.3.26
[INFO] [stderr]    Compiling futures-sink v0.3.26
[INFO] [stderr]    Compiling futures-util v0.3.26
[INFO] [stderr]    Compiling phf_shared v0.11.1
[INFO] [stderr]    Compiling tokio v1.25.0
[INFO] [stderr]    Compiling futures-io v0.3.26
[INFO] [stderr]    Compiling unchecked_unwrap v4.0.0
[INFO] [stderr]    Compiling unicode-width v0.1.10
[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 phf_generator v0.11.1
[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" "bcd0ac8335dcdc0ec5d3461c7c5510a9f0c1bfb0157c8502ead0fb72ab238239", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcd0ac8335dcdc0ec5d3461c7c5510a9f0c1bfb0157c8502ead0fb72ab238239", kill_on_drop: false }`
[INFO] [stdout] bcd0ac8335dcdc0ec5d3461c7c5510a9f0c1bfb0157c8502ead0fb72ab238239