[INFO] cloning repository https://github.com/Juan-789/Juan-rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Juan-789/Juan-rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJuan-789%2FJuan-rustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJuan-789%2FJuan-rustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 097f9d66c0cededa8099480c0cba8f95f853ac78
[INFO] testing Juan-789/Juan-rustlings/097f9d66c0cededa8099480c0cba8f95f853ac78 against try#024495a232636f1f9407d7695b2be51edc2c51bd for pr-130285
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJuan-789%2FJuan-rustlings" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Juan-789/Juan-rustlings on toolchain 024495a232636f1f9407d7695b2be51edc2c51bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024495a232636f1f9407d7695b2be51edc2c51bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Juan-789/Juan-rustlings
[INFO] finished tweaking git repo https://github.com/Juan-789/Juan-rustlings
[INFO] tweaked toml for git repo https://github.com/Juan-789/Juan-rustlings written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Juan-789/Juan-rustlings 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" "+024495a232636f1f9407d7695b2be51edc2c51bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+024495a232636f1f9407d7695b2be51edc2c51bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac76eb289e8a8d8784acd58bb739ffeb017fed221ea2bf11f6de88394c0dc175
[INFO] running `Command { std: "docker" "start" "-a" "ac76eb289e8a8d8784acd58bb739ffeb017fed221ea2bf11f6de88394c0dc175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac76eb289e8a8d8784acd58bb739ffeb017fed221ea2bf11f6de88394c0dc175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac76eb289e8a8d8784acd58bb739ffeb017fed221ea2bf11f6de88394c0dc175", kill_on_drop: false }`
[INFO] [stdout] ac76eb289e8a8d8784acd58bb739ffeb017fed221ea2bf11f6de88394c0dc175
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+024495a232636f1f9407d7695b2be51edc2c51bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d3b9f46096ccf9cce981f62d2451ca256bc8a5b54dd328b6592cd2c895a5d4a
[INFO] running `Command { std: "docker" "start" "-a" "3d3b9f46096ccf9cce981f62d2451ca256bc8a5b54dd328b6592cd2c895a5d4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.53
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling serde_derive v1.0.158
[INFO] [stderr]    Compiling serde v1.0.158
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling anstyle-parse v0.2.1
[INFO] [stderr]    Compiling hashbrown v0.14.0
[INFO] [stderr]    Compiling anstyle-query v1.0.0
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.53/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 portable-atomic v1.4.3
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling anstyle v1.0.3
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling winnow v0.5.15
[INFO] [stderr]    Compiling clap_lex v0.5.1
[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" "3d3b9f46096ccf9cce981f62d2451ca256bc8a5b54dd328b6592cd2c895a5d4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d3b9f46096ccf9cce981f62d2451ca256bc8a5b54dd328b6592cd2c895a5d4a", kill_on_drop: false }`
[INFO] [stdout] 3d3b9f46096ccf9cce981f62d2451ca256bc8a5b54dd328b6592cd2c895a5d4a