[INFO] fetching crate rgreeter 0.1.2...
[INFO] testing rgreeter-0.1.2 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate rgreeter 0.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate rgreeter 0.1.2
[INFO] finished tweaking crates.io crate rgreeter 0.1.2
[INFO] tweaked toml for crates.io crate rgreeter 0.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rgreeter 0.1.2 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rgreeter 0.1.2 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-attributes v0.1.23
[INFO] [stderr]   Downloaded socket2 v0.4.7
[INFO] [stderr]   Downloaded tokio-macros v1.8.2
[INFO] [stderr]   Downloaded futures-core v0.3.26
[INFO] [stderr]   Downloaded once_cell v1.17.0
[INFO] [stderr]   Downloaded matchit v0.7.0
[INFO] [stderr]   Downloaded async-trait v0.1.64
[INFO] [stderr]   Downloaded tokio-util v0.7.7
[INFO] [stderr]   Downloaded futures-task v0.3.26
[INFO] [stderr]   Downloaded futures-sink v0.3.26
[INFO] [stderr]   Downloaded futures-util v0.3.26
[INFO] [stderr]   Downloaded http-range-header v0.3.0
[INFO] [stderr]   Downloaded tokio v1.25.0
[INFO] [stderr]   Downloaded serde_path_to_error v0.1.9
[INFO] [stderr]   Downloaded futures-channel v0.3.26
[INFO] [stderr]   Downloaded axum v0.6.6
[INFO] [stderr]   Downloaded serde_json v1.0.93
[INFO] [stderr]   Downloaded rustversion v1.0.11
[INFO] [stderr]   Downloaded hyper v0.14.24
[INFO] [stderr]   Downloaded tracing-subscriber v0.3.16
[INFO] [stderr]   Downloaded axum-core v0.3.2
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a8d0a39df243fbf13f3ab0755420b583084926fbb34ee201dbc6e30f060dc57
[INFO] running `Command { std: "docker" "start" "-a" "7a8d0a39df243fbf13f3ab0755420b583084926fbb34ee201dbc6e30f060dc57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a8d0a39df243fbf13f3ab0755420b583084926fbb34ee201dbc6e30f060dc57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a8d0a39df243fbf13f3ab0755420b583084926fbb34ee201dbc6e30f060dc57", kill_on_drop: false }`
[INFO] [stdout] 7a8d0a39df243fbf13f3ab0755420b583084926fbb34ee201dbc6e30f060dc57
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ddd7dd00b4c601bd96a2cffd7804177d0a40bfea6e7ed5778290edd7ed357876
[INFO] running `Command { std: "docker" "start" "-a" "ddd7dd00b4c601bd96a2cffd7804177d0a40bfea6e7ed5778290edd7ed357876", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling once_cell v1.17.0
[INFO] [stderr]    Compiling futures-core v0.3.26
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling futures-task v0.3.26
[INFO] [stderr]    Compiling tokio v1.25.0
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling rustversion v1.0.11
[INFO] [stderr]    Compiling futures-util v0.3.26
[INFO] [stderr]    Compiling socket2 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 num_cpus v1.15.0
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling mio v0.8.6
[INFO] [stderr]    Compiling http v0.2.8
[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" "ddd7dd00b4c601bd96a2cffd7804177d0a40bfea6e7ed5778290edd7ed357876", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddd7dd00b4c601bd96a2cffd7804177d0a40bfea6e7ed5778290edd7ed357876", kill_on_drop: false }`
[INFO] [stdout] ddd7dd00b4c601bd96a2cffd7804177d0a40bfea6e7ed5778290edd7ed357876
