[INFO] fetching crate palacinke 0.0.5-dev...
[INFO] building palacinke-0.0.5-dev against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate palacinke 0.0.5-dev into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate palacinke 0.0.5-dev
[INFO] finished tweaking crates.io crate palacinke 0.0.5-dev
[INFO] tweaked toml for crates.io crate palacinke 0.0.5-dev written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate palacinke 0.0.5-dev on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate palacinke 0.0.5-dev 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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5e2639e396ffa52ee79511eba491f3065858192f48f1ca84c94f069ada45699
[INFO] running `Command { std: "docker" "start" "-a" "f5e2639e396ffa52ee79511eba491f3065858192f48f1ca84c94f069ada45699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5e2639e396ffa52ee79511eba491f3065858192f48f1ca84c94f069ada45699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5e2639e396ffa52ee79511eba491f3065858192f48f1ca84c94f069ada45699", kill_on_drop: false }`
[INFO] [stdout] f5e2639e396ffa52ee79511eba491f3065858192f48f1ca84c94f069ada45699
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4cf7ada7482386d09c93b6a6bab5dc0e2446e5136e99b68d1097ccfa8b11b3d
[INFO] running `Command { std: "docker" "start" "-a" "f4cf7ada7482386d09c93b6a6bab5dc0e2446e5136e99b68d1097ccfa8b11b3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling syn v1.0.105
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.3
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling rustix v0.36.5
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling linux-raw-sys v0.1.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling bytes v1.3.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling paste v1.0.9
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling endian-type v0.1.2
[INFO] [stderr]    Compiling os_str_bytes v6.4.1
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling nibble_vec v0.1.0
[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 strsim v0.10.0
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling radix_trie v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling clap_lex v0.3.0
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling utf8parse v0.2.0
[INFO] [stderr]    Compiling unicode-segmentation v1.10.0
[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" "f4cf7ada7482386d09c93b6a6bab5dc0e2446e5136e99b68d1097ccfa8b11b3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4cf7ada7482386d09c93b6a6bab5dc0e2446e5136e99b68d1097ccfa8b11b3d", kill_on_drop: false }`
[INFO] [stdout] f4cf7ada7482386d09c93b6a6bab5dc0e2446e5136e99b68d1097ccfa8b11b3d