[INFO] fetching crate txl-rs 0.0.3...
[INFO] building txl-rs-0.0.3 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate txl-rs 0.0.3 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate txl-rs 0.0.3
[INFO] finished tweaking crates.io crate txl-rs 0.0.3
[INFO] tweaked toml for crates.io crate txl-rs 0.0.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate txl-rs 0.0.3 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate txl-rs 0.0.3 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.76
[INFO] [stderr]   Downloaded jobserver v0.1.25
[INFO] [stderr]   Downloaded time-core v0.1.0
[INFO] [stderr]   Downloaded zip v0.6.3
[INFO] [stderr]   Downloaded time-macros v0.2.6
[INFO] [stderr]   Downloaded num_cpus v1.14.0
[INFO] [stderr]   Downloaded ipnet v2.5.1
[INFO] [stderr]   Downloaded ryu v1.0.11
[INFO] [stderr]   Downloaded bytes v1.2.1
[INFO] [stderr]   Downloaded openssl-sys v0.9.77
[INFO] [stderr]   Downloaded serde v1.0.147
[INFO] [stderr]   Downloaded time v0.3.17
[INFO] [stderr]   Downloaded aho-corasick v0.7.19
[INFO] [stderr]   Downloaded serde_json v1.0.88
[INFO] [stderr]   Downloaded tar v0.4.38
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.12
[INFO] [stderr]   Downloaded filetime v0.2.18
[INFO] [stderr]   Downloaded xattr v0.2.3
[INFO] [stderr]   Downloaded base64ct v1.5.3
[INFO] [stderr]   Downloaded itoa v1.0.4
[INFO] [stderr]   Downloaded openssl v0.10.42
[INFO] [stderr]   Downloaded tokio v1.22.0
[INFO] [stderr]   Downloaded libc v0.2.137
[INFO] [stderr]   Downloaded zstd-sys v2.0.1+zstd.1.5.2
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 362b321ee5fd086adcbc48b17a0e054813bb292a6dc5e524363cbb4c9a4714e1
[INFO] running `Command { std: "docker" "start" "-a" "362b321ee5fd086adcbc48b17a0e054813bb292a6dc5e524363cbb4c9a4714e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "362b321ee5fd086adcbc48b17a0e054813bb292a6dc5e524363cbb4c9a4714e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "362b321ee5fd086adcbc48b17a0e054813bb292a6dc5e524363cbb4c9a4714e1", kill_on_drop: false }`
[INFO] [stdout] 362b321ee5fd086adcbc48b17a0e054813bb292a6dc5e524363cbb4c9a4714e1
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b73511db5d2aa2fc0844dc2e1134a5ceed2a40b0d857193756999c74e9ddf78
[INFO] running `Command { std: "docker" "start" "-a" "5b73511db5d2aa2fc0844dc2e1134a5ceed2a40b0d857193756999c74e9ddf78", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling bytes v1.2.1
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling itoa v1.0.4
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling tokio v1.22.0
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling openssl v0.10.42
[INFO] [stderr]    Compiling cpufeatures v0.2.5
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling futures-io v0.3.25
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling zstd-safe v5.0.2+zstd.1.5.2
[INFO] [stderr]    Compiling tracing-core v0.1.30
[INFO] [stderr]    Compiling form_urlencoded v1.1.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.22
[INFO] [stderr]    Compiling base64ct v1.5.3
[INFO] [stderr]    Compiling time-core v0.1.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling miniz_oxide v0.5.4
[INFO] [stderr]    Compiling time-macros v0.2.6
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling http v0.2.8
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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 password-hash v0.4.2
[INFO] [stderr]    Compiling ipnet v2.5.1
[INFO] [stderr]    Compiling constant_time_eq v0.1.5
[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" "5b73511db5d2aa2fc0844dc2e1134a5ceed2a40b0d857193756999c74e9ddf78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b73511db5d2aa2fc0844dc2e1134a5ceed2a40b0d857193756999c74e9ddf78", kill_on_drop: false }`
[INFO] [stdout] 5b73511db5d2aa2fc0844dc2e1134a5ceed2a40b0d857193756999c74e9ddf78