[INFO] cloning repository https://github.com/radicle-dev/tracing-bug
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/radicle-dev/tracing-bug" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fradicle-dev%2Ftracing-bug", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fradicle-dev%2Ftracing-bug'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e8f60e4a09594ec22794561f172828cee5c29c6f
[INFO] checking radicle-dev/tracing-bug against master#8424f8e8cdf07010967a57584fd647b30e930d4d for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fradicle-dev%2Ftracing-bug" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/radicle-dev/tracing-bug on toolchain 8424f8e8cdf07010967a57584fd647b30e930d4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/radicle-dev/tracing-bug
[INFO] finished tweaking git repo https://github.com/radicle-dev/tracing-bug
[INFO] tweaked toml for git repo https://github.com/radicle-dev/tracing-bug written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/radicle-dev/tracing-bug 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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "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 radicle-dev/tracing-bug against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fradicle-dev%2Ftracing-bug" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/radicle-dev/tracing-bug on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/radicle-dev/tracing-bug
[INFO] finished tweaking git repo https://github.com/radicle-dev/tracing-bug
[INFO] tweaked toml for git repo https://github.com/radicle-dev/tracing-bug written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/radicle-dev/tracing-bug 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking radicle-dev/tracing-bug against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fradicle-dev%2Ftracing-bug" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/radicle-dev/tracing-bug on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/radicle-dev/tracing-bug
[INFO] finished tweaking git repo https://github.com/radicle-dev/tracing-bug
[INFO] tweaked toml for git repo https://github.com/radicle-dev/tracing-bug written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/radicle-dev/tracing-bug 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b22af34dd627607b6f15853b761e40e6edc3ae9fd9144001eea4f8aa944417ad
[INFO] running `Command { std: "docker" "start" "-a" "b22af34dd627607b6f15853b761e40e6edc3ae9fd9144001eea4f8aa944417ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b22af34dd627607b6f15853b761e40e6edc3ae9fd9144001eea4f8aa944417ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b22af34dd627607b6f15853b761e40e6edc3ae9fd9144001eea4f8aa944417ad", kill_on_drop: false }`
[INFO] [stdout] b22af34dd627607b6f15853b761e40e6edc3ae9fd9144001eea4f8aa944417ad
[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 -Ddereferencing_mut_binding" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18e3f8272017bf58970db7e1403ed4d545cc1fa281a7ef73ee0eb805eec56f0a
[INFO] running `Command { std: "docker" "start" "-a" "18e3f8272017bf58970db7e1403ed4d545cc1fa281a7ef73ee0eb805eec56f0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling tracing-attributes v0.1.12
[INFO] [stderr]     Checking tracing v0.1.23
[INFO] [stderr]     Checking tracing-bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0562]: `impl Trait` is not allowed in closure return types
[INFO] [stdout]   --> src/main.rs:22:30
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn test(&self) -> Result<impl Iterator<Item = u32>, Error> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `impl Trait` is only allowed in arguments and return types of functions and methods
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0562]: `impl Trait` is not allowed in closure return types
[INFO] [stdout]   --> src/main.rs:22:30
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn test(&self) -> Result<impl Iterator<Item = u32>, Error> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `impl Trait` is only allowed in arguments and return types of functions and methods
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0562`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tracing-bug` (bin "tracing-bug") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0562`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tracing-bug` (bin "tracing-bug" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "18e3f8272017bf58970db7e1403ed4d545cc1fa281a7ef73ee0eb805eec56f0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18e3f8272017bf58970db7e1403ed4d545cc1fa281a7ef73ee0eb805eec56f0a", kill_on_drop: false }`
[INFO] [stdout] 18e3f8272017bf58970db7e1403ed4d545cc1fa281a7ef73ee0eb805eec56f0a