[INFO] cloning repository https://github.com/Js2Go/demo-toml
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Js2Go/demo-toml" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJs2Go%2Fdemo-toml", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJs2Go%2Fdemo-toml'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a2f0991ce32e5b840b41c9f33863868b0adebbf7
[INFO] checking Js2Go/demo-toml against master#8424f8e8cdf07010967a57584fd647b30e930d4d for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJs2Go%2Fdemo-toml" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Js2Go/demo-toml 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/Js2Go/demo-toml
[INFO] finished tweaking git repo https://github.com/Js2Go/demo-toml
[INFO] tweaked toml for git repo https://github.com/Js2Go/demo-toml written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Js2Go/demo-toml 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
[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 Js2Go/demo-toml 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%2FJs2Go%2Fdemo-toml" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Js2Go/demo-toml 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/Js2Go/demo-toml
[INFO] finished tweaking git repo https://github.com/Js2Go/demo-toml
[INFO] tweaked toml for git repo https://github.com/Js2Go/demo-toml written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Js2Go/demo-toml 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 78d2211b24e20525bdeaa9631aaf0dca61c3e401fb53ecedac0ad88bcbb4981a
[INFO] running `Command { std: "docker" "start" "-a" "78d2211b24e20525bdeaa9631aaf0dca61c3e401fb53ecedac0ad88bcbb4981a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78d2211b24e20525bdeaa9631aaf0dca61c3e401fb53ecedac0ad88bcbb4981a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78d2211b24e20525bdeaa9631aaf0dca61c3e401fb53ecedac0ad88bcbb4981a", kill_on_drop: false }`
[INFO] [stdout] 78d2211b24e20525bdeaa9631aaf0dca61c3e401fb53ecedac0ad88bcbb4981a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 3495f49b85c134f115703a60cc88d8a7972d469267eb986d80c31d3c1fe37a53
[INFO] running `Command { std: "docker" "start" "-a" "3495f49b85c134f115703a60cc88d8a7972d469267eb986d80c31d3c1fe37a53", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking toml-demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `adapter`, `db_name`, and `pool` are never read
[INFO] [stdout]  --> src/conf/basic_config.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Database {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 5 |     pub(crate) adapter: String,
[INFO] [stdout]   |                ^^^^^^^
[INFO] [stdout] 6 |     pub(crate) db_name: String,
[INFO] [stdout]   |                ^^^^^^^
[INFO] [stdout] 7 |     pub(crate) pool: u32,
[INFO] [stdout]   |                ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Database` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `adapter`, `db_name`, and `pool` are never read
[INFO] [stdout]  --> src/conf/basic_config.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Database {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 5 |     pub(crate) adapter: String,
[INFO] [stdout]   |                ^^^^^^^
[INFO] [stdout] 6 |     pub(crate) db_name: String,
[INFO] [stdout]   |                ^^^^^^^
[INFO] [stdout] 7 |     pub(crate) pool: u32,
[INFO] [stdout]   |                ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Database` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.92s
[INFO] running `Command { std: "docker" "inspect" "3495f49b85c134f115703a60cc88d8a7972d469267eb986d80c31d3c1fe37a53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3495f49b85c134f115703a60cc88d8a7972d469267eb986d80c31d3c1fe37a53", kill_on_drop: false }`
[INFO] [stdout] 3495f49b85c134f115703a60cc88d8a7972d469267eb986d80c31d3c1fe37a53