[INFO] fetching crate metrics-exporter-tcp 0.8.0...
[INFO] checking metrics-exporter-tcp-0.8.0 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-4
[INFO] extracting crate metrics-exporter-tcp 0.8.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate metrics-exporter-tcp 0.8.0 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metrics-exporter-tcp 0.8.0
[INFO] finished tweaking crates.io crate metrics-exporter-tcp 0.8.0
[INFO] tweaked toml for crates.io crate metrics-exporter-tcp 0.8.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate metrics-exporter-tcp 0.8.0 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded metrics-macros v0.7.0
[INFO] [stderr]   Downloaded quanta v0.10.1
[INFO] [stderr]   Downloaded metrics v0.21.0
[INFO] [stderr]   Downloaded portable-atomic v1.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e75be1efd6e0ab9ac18dd20fcc4482f6f0517e7ebd96a0e008c1f712d9b43b4
[INFO] running `Command { std: "docker" "start" "-a" "3e75be1efd6e0ab9ac18dd20fcc4482f6f0517e7ebd96a0e008c1f712d9b43b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e75be1efd6e0ab9ac18dd20fcc4482f6f0517e7ebd96a0e008c1f712d9b43b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e75be1efd6e0ab9ac18dd20fcc4482f6f0517e7ebd96a0e008c1f712d9b43b4", kill_on_drop: false }`
[INFO] [stdout] 3e75be1efd6e0ab9ac18dd20fcc4482f6f0517e7ebd96a0e008c1f712d9b43b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69c5b0a9b3b598e933e1abe4cc9bb56c5bc517a23376bd685b7e74bad8113bf6
[INFO] running `Command { std: "docker" "start" "-a" "69c5b0a9b3b598e933e1abe4cc9bb56c5bc517a23376bd685b7e74bad8113bf6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling anyhow v1.0.70
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]    Compiling rustix v0.37.7
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling prettyplease v0.1.25
[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 itertools v0.10.5
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling bytes v1.4.0
[INFO] [stderr]    Compiling linux-raw-sys v0.3.1
[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" "69c5b0a9b3b598e933e1abe4cc9bb56c5bc517a23376bd685b7e74bad8113bf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69c5b0a9b3b598e933e1abe4cc9bb56c5bc517a23376bd685b7e74bad8113bf6", kill_on_drop: false }`
[INFO] [stdout] 69c5b0a9b3b598e933e1abe4cc9bb56c5bc517a23376bd685b7e74bad8113bf6
[INFO] checking metrics-exporter-tcp-0.8.0 against try#36dbcaee1a55543dfc181be52a69d99ff46ff62f for pr-122960-4
[INFO] extracting crate metrics-exporter-tcp 0.8.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate metrics-exporter-tcp 0.8.0 on toolchain 36dbcaee1a55543dfc181be52a69d99ff46ff62f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metrics-exporter-tcp 0.8.0
[INFO] finished tweaking crates.io crate metrics-exporter-tcp 0.8.0
[INFO] tweaked toml for crates.io crate metrics-exporter-tcp 0.8.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate metrics-exporter-tcp 0.8.0 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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e03eb2f84ec0e27c6cc3fdafc29e0a4bb5c2603c960888569645c956bef001ec
[INFO] running `Command { std: "docker" "start" "-a" "e03eb2f84ec0e27c6cc3fdafc29e0a4bb5c2603c960888569645c956bef001ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e03eb2f84ec0e27c6cc3fdafc29e0a4bb5c2603c960888569645c956bef001ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e03eb2f84ec0e27c6cc3fdafc29e0a4bb5c2603c960888569645c956bef001ec", kill_on_drop: false }`
[INFO] [stdout] e03eb2f84ec0e27c6cc3fdafc29e0a4bb5c2603c960888569645c956bef001ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63f5e28d5fc82be1c1401ae6412fcc56ebffa138bc32b4337080ab2b27f4bcb5
[INFO] running `Command { std: "docker" "start" "-a" "63f5e28d5fc82be1c1401ae6412fcc56ebffa138bc32b4337080ab2b27f4bcb5", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] skipping non-2021 edition `2018`
[INFO] running `Command { std: "docker" "inspect" "63f5e28d5fc82be1c1401ae6412fcc56ebffa138bc32b4337080ab2b27f4bcb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63f5e28d5fc82be1c1401ae6412fcc56ebffa138bc32b4337080ab2b27f4bcb5", kill_on_drop: false }`
[INFO] [stdout] 63f5e28d5fc82be1c1401ae6412fcc56ebffa138bc32b4337080ab2b27f4bcb5