[INFO] cloning repository https://github.com/cyntler/currency-converter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cyntler/currency-converter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcyntler%2Fcurrency-converter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcyntler%2Fcurrency-converter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47aa3866558549bd47cd0473204548f9c96b0bc2
[INFO] checking cyntler/currency-converter against master#426a60abc213b28a7c7198e475476b6e650d871f for pr-129199
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcyntler%2Fcurrency-converter" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cyntler/currency-converter on toolchain 426a60abc213b28a7c7198e475476b6e650d871f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+426a60abc213b28a7c7198e475476b6e650d871f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cyntler/currency-converter
[INFO] finished tweaking git repo https://github.com/cyntler/currency-converter
[INFO] tweaked toml for git repo https://github.com/cyntler/currency-converter written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cyntler/currency-converter 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" "+426a60abc213b28a7c7198e475476b6e650d871f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking cyntler/currency-converter against try#2c70eb47850052381670935f807d41647a7dc992 for pr-129199
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcyntler%2Fcurrency-converter" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cyntler/currency-converter on toolchain 2c70eb47850052381670935f807d41647a7dc992
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2c70eb47850052381670935f807d41647a7dc992" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cyntler/currency-converter
[INFO] finished tweaking git repo https://github.com/cyntler/currency-converter
[INFO] tweaked toml for git repo https://github.com/cyntler/currency-converter written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/cyntler/currency-converter 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" "+2c70eb47850052381670935f807d41647a7dc992" "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-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+2c70eb47850052381670935f807d41647a7dc992" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1d75e0db8855c3c87e9712790519a6a45ebde17c994958c7a28d23527dfb950
[INFO] running `Command { std: "docker" "start" "-a" "e1d75e0db8855c3c87e9712790519a6a45ebde17c994958c7a28d23527dfb950", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1d75e0db8855c3c87e9712790519a6a45ebde17c994958c7a28d23527dfb950", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1d75e0db8855c3c87e9712790519a6a45ebde17c994958c7a28d23527dfb950", kill_on_drop: false }`
[INFO] [stdout] e1d75e0db8855c3c87e9712790519a6a45ebde17c994958c7a28d23527dfb950
[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=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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+2c70eb47850052381670935f807d41647a7dc992" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f0ef823a185b45ec849d8daa157fa9c3b47ad51171952595e9339684ae28fff
[INFO] running `Command { std: "docker" "start" "-a" "7f0ef823a185b45ec849d8daa157fa9c3b47ad51171952595e9339684ae28fff", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling openssl-sys v0.9.77
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling futures-task v0.3.25
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling openssl v0.10.42
[INFO] [stderr]    Compiling futures-util v0.3.25
[INFO] [stderr]    Compiling futures-channel v0.3.25
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]     Checking futures-sink v0.3.25
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking httparse v1.8.0
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.87
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking encoding_rs v0.8.31
[INFO] [stderr]     Checking ipnet v2.5.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.47/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]     Checking tracing v0.1.37
[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" "7f0ef823a185b45ec849d8daa157fa9c3b47ad51171952595e9339684ae28fff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f0ef823a185b45ec849d8daa157fa9c3b47ad51171952595e9339684ae28fff", kill_on_drop: false }`
[INFO] [stdout] 7f0ef823a185b45ec849d8daa157fa9c3b47ad51171952595e9339684ae28fff