[INFO] cloning repository https://github.com/serkonon/web_app
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/serkonon/web_app" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fserkonon%2Fweb_app", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fserkonon%2Fweb_app'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e0df4d4576755731a7cd2c2610f7f42857f69ac7
[INFO] checking serkonon/web_app against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fserkonon%2Fweb_app" "/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/serkonon/web_app on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/serkonon/web_app
[INFO] finished tweaking git repo https://github.com/serkonon/web_app
[INFO] tweaked toml for git repo https://github.com/serkonon/web_app written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/serkonon/web_app 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "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 serkonon/web_app against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fserkonon%2Fweb_app" "/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/serkonon/web_app on toolchain f9935d29d867449445ee008640ccca1bf1ae0889
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/serkonon/web_app
[INFO] finished tweaking git repo https://github.com/serkonon/web_app
[INFO] tweaked toml for git repo https://github.com/serkonon/web_app written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/serkonon/web_app 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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9217ff3a79497b75b0922d46a8bec0783c5f757893fa02d4959ba8501b5849a
[INFO] running `Command { std: "docker" "start" "-a" "b9217ff3a79497b75b0922d46a8bec0783c5f757893fa02d4959ba8501b5849a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9217ff3a79497b75b0922d46a8bec0783c5f757893fa02d4959ba8501b5849a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9217ff3a79497b75b0922d46a8bec0783c5f757893fa02d4959ba8501b5849a", kill_on_drop: false }`
[INFO] [stdout] b9217ff3a79497b75b0922d46a8bec0783c5f757893fa02d4959ba8501b5849a
[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 -Dtail_expr_drop_order" "-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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 025922b932d652d49a501af2dc2fed064957a9aa928951aeb2966bc4bb78a4fa
[INFO] running `Command { std: "docker" "start" "-a" "025922b932d652d49a501af2dc2fed064957a9aa928951aeb2966bc4bb78a4fa", kill_on_drop: false }`
[INFO] [stderr]     Checking web_app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `status` is never read
[INFO] [stdout]  --> src/to_do/structs/base.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Base {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 5 |     pub title: String,
[INFO] [stdout] 6 |     pub status: TaskStatus
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `stringify` is never used
[INFO] [stdout]  --> src/to_do/enums.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl TaskStatus {
[INFO] [stdout]   | --------------- method in this implementation
[INFO] [stdout] 9 |     pub fn stringify(&self) -> String {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Create` is never used
[INFO] [stdout]  --> src/to_do/traits/create.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Create {
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_to_pending` is never used
[INFO] [stdout]  --> src/to_do/traits/edit.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Edit {
[INFO] [stdout]   |           ---- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 5 |     fn set_to_pending(&self, title: &str) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `status` is never read
[INFO] [stdout]  --> src/to_do/structs/base.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Base {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 5 |     pub title: String,
[INFO] [stdout] 6 |     pub status: TaskStatus
[INFO] [stdout]   |         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `stringify` is never used
[INFO] [stdout]  --> src/to_do/enums.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl TaskStatus {
[INFO] [stdout]   | --------------- method in this implementation
[INFO] [stdout] 9 |     pub fn stringify(&self) -> String {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Create` is never used
[INFO] [stdout]  --> src/to_do/traits/create.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Create {
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_to_pending` is never used
[INFO] [stdout]  --> src/to_do/traits/edit.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Edit {
[INFO] [stdout]   |           ---- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 5 |     fn set_to_pending(&self, title: &str) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "025922b932d652d49a501af2dc2fed064957a9aa928951aeb2966bc4bb78a4fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "025922b932d652d49a501af2dc2fed064957a9aa928951aeb2966bc4bb78a4fa", kill_on_drop: false }`
[INFO] [stdout] 025922b932d652d49a501af2dc2fed064957a9aa928951aeb2966bc4bb78a4fa