[INFO] cloning repository https://github.com/jhaenen/JSON_hierachy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jhaenen/JSON_hierachy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjhaenen%2FJSON_hierachy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjhaenen%2FJSON_hierachy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c781d238008374b803d9224e89fc4561be58d731
[INFO] checking jhaenen/JSON_hierachy against try#028201683a76a5cd349729c6819c46607119c4e8 for pr-144157
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjhaenen%2FJSON_hierachy" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jhaenen/JSON_hierachy
[INFO] finished tweaking git repo https://github.com/jhaenen/JSON_hierachy
[INFO] tweaked toml for git repo https://github.com/jhaenen/JSON_hierachy written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jhaenen/JSON_hierachy on toolchain 028201683a76a5cd349729c6819c46607119c4e8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jhaenen/JSON_hierachy 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" "+028201683a76a5cd349729c6819c46607119c4e8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indoc v1.0.7
[INFO] [stderr]   Downloaded pyo3-build-config v0.17.3
[INFO] [stderr]   Downloaded unindent v0.1.10
[INFO] [stderr]   Downloaded pyo3-ffi v0.17.3
[INFO] [stderr]   Downloaded pyo3-macros v0.17.3
[INFO] [stderr]   Downloaded dot v0.1.4
[INFO] [stderr]   Downloaded enum-map v2.4.2
[INFO] [stderr]   Downloaded target-lexicon v0.12.5
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.17.3
[INFO] [stderr]   Downloaded pyo3 v0.17.3
[INFO] [stderr]   Downloaded text-template v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2cc25b7e554ee7d013b27269a7d9b0dd72b1cbea4ff94575bf514a97d2fab685
[INFO] running `Command { std: "docker" "start" "-a" "2cc25b7e554ee7d013b27269a7d9b0dd72b1cbea4ff94575bf514a97d2fab685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cc25b7e554ee7d013b27269a7d9b0dd72b1cbea4ff94575bf514a97d2fab685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cc25b7e554ee7d013b27269a7d9b0dd72b1cbea4ff94575bf514a97d2fab685", kill_on_drop: false }`
[INFO] [stdout] 2cc25b7e554ee7d013b27269a7d9b0dd72b1cbea4ff94575bf514a97d2fab685
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+028201683a76a5cd349729c6819c46607119c4e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9503ae269da36c3bec0eacbc520e679785a510d3f525034e249ef558a5f42618
[INFO] running `Command { std: "docker" "start" "-a" "9503ae269da36c3bec0eacbc520e679785a510d3f525034e249ef558a5f42618", 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 syn v1.0.105
[INFO] [stderr]    Compiling target-lexicon v0.12.5
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling parking_lot_core v0.9.5
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling indoc v1.0.7
[INFO] [stderr]     Checking unindent v0.1.10
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]     Checking dot v0.1.4
[INFO] [stderr]     Checking text-template 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] [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" "9503ae269da36c3bec0eacbc520e679785a510d3f525034e249ef558a5f42618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9503ae269da36c3bec0eacbc520e679785a510d3f525034e249ef558a5f42618", kill_on_drop: false }`
[INFO] [stdout] 9503ae269da36c3bec0eacbc520e679785a510d3f525034e249ef558a5f42618