[INFO] cloning repository https://github.com/qchen-fdii-cardc/symbolic_regression
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qchen-fdii-cardc/symbolic_regression" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqchen-fdii-cardc%2Fsymbolic_regression", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqchen-fdii-cardc%2Fsymbolic_regression'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5f42079af6ac9929dd00e6d21155c9d5539c6e01
[INFO] checking qchen-fdii-cardc/symbolic_regression against try#0bdee9e879c87b7211d316e9152109cfd46c576b for pr-150097
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqchen-fdii-cardc%2Fsymbolic_regression" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/qchen-fdii-cardc/symbolic_regression
[INFO] finished tweaking git repo https://github.com/qchen-fdii-cardc/symbolic_regression
[INFO] tweaked toml for git repo https://github.com/qchen-fdii-cardc/symbolic_regression written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/qchen-fdii-cardc/symbolic_regression on toolchain 0bdee9e879c87b7211d316e9152109cfd46c576b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/qchen-fdii-cardc/symbolic_regression 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" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "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 qchen-fdii-cardc/symbolic_regression against try#0bdee9e879c87b7211d316e9152109cfd46c576b for pr-150097
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqchen-fdii-cardc%2Fsymbolic_regression" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/qchen-fdii-cardc/symbolic_regression
[INFO] finished tweaking git repo https://github.com/qchen-fdii-cardc/symbolic_regression
[INFO] tweaked toml for git repo https://github.com/qchen-fdii-cardc/symbolic_regression written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/qchen-fdii-cardc/symbolic_regression on toolchain 0bdee9e879c87b7211d316e9152109cfd46c576b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/qchen-fdii-cardc/symbolic_regression 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" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18848c4bf8f955b92f8cb54f5a9d3157f6dc70382d3ff3fca89f5b86ea33d5c2
[INFO] running `Command { std: "docker" "start" "-a" "18848c4bf8f955b92f8cb54f5a9d3157f6dc70382d3ff3fca89f5b86ea33d5c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18848c4bf8f955b92f8cb54f5a9d3157f6dc70382d3ff3fca89f5b86ea33d5c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18848c4bf8f955b92f8cb54f5a9d3157f6dc70382d3ff3fca89f5b86ea33d5c2", kill_on_drop: false }`
[INFO] [stdout] 18848c4bf8f955b92f8cb54f5a9d3157f6dc70382d3ff3fca89f5b86ea33d5c2
[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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0bdee9e879c87b7211d316e9152109cfd46c576b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f61ff82f210176b296ad883e59408bb584f366a5802cc5c92bf530b942ca53f
[INFO] running `Command { std: "docker" "start" "-a" "2f61ff82f210176b296ad883e59408bb584f366a5802cc5c92bf530b942ca53f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking symbolic_regression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: direct cast of function item into an integer
[INFO] [stdout]    --> src/lib.rs:327:87
[INFO] [stdout]     |
[INFO] [stdout] 327 |             if stall_counter > config.stall_threshold && fit_func as usize != fitness as usize {
[INFO] [stdout]     |                                                                                       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(function_casts_as_integer)]` on by default
[INFO] [stdout] help: first cast to a pointer `as *const ()`
[INFO] [stdout]     |
[INFO] [stdout] 327 |             if stall_counter > config.stall_threshold && fit_func as usize != fitness as *const () as usize {
[INFO] [stdout]     |                                                                                       ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: direct cast of function item into an integer
[INFO] [stdout]    --> src/lib.rs:327:87
[INFO] [stdout]     |
[INFO] [stdout] 327 |             if stall_counter > config.stall_threshold && fit_func as usize != fitness as usize {
[INFO] [stdout]     |                                                                                       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(function_casts_as_integer)]` on by default
[INFO] [stdout] help: first cast to a pointer `as *const ()`
[INFO] [stdout]     |
[INFO] [stdout] 327 |             if stall_counter > config.stall_threshold && fit_func as usize != fitness as *const () as usize {
[INFO] [stdout]     |                                                                                       ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.70s
[INFO] running `Command { std: "docker" "inspect" "2f61ff82f210176b296ad883e59408bb584f366a5802cc5c92bf530b942ca53f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f61ff82f210176b296ad883e59408bb584f366a5802cc5c92bf530b942ca53f", kill_on_drop: false }`
[INFO] [stdout] 2f61ff82f210176b296ad883e59408bb584f366a5802cc5c92bf530b942ca53f