[INFO] cloning repository https://github.com/zmrush/rust-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zmrush/rust-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzmrush%2Frust-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzmrush%2Frust-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ffd6f34d19a736b53c544a72fd3f1f089a4706f
[INFO] checking zmrush/rust-learning against try#d8a5ee01b913730aca7ab44c72c8f2722c0533ff for pr-139022
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzmrush%2Frust-learning" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zmrush/rust-learning on toolchain d8a5ee01b913730aca7ab44c72c8f2722c0533ff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zmrush/rust-learning
[INFO] finished tweaking git repo https://github.com/zmrush/rust-learning
[INFO] tweaked toml for git repo https://github.com/zmrush/rust-learning written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/zmrush/rust-learning 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" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "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 zmrush/rust-learning against try#d8a5ee01b913730aca7ab44c72c8f2722c0533ff for pr-139022
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzmrush%2Frust-learning" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zmrush/rust-learning on toolchain d8a5ee01b913730aca7ab44c72c8f2722c0533ff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zmrush/rust-learning
[INFO] finished tweaking git repo https://github.com/zmrush/rust-learning
[INFO] tweaked toml for git repo https://github.com/zmrush/rust-learning written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/zmrush/rust-learning 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" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "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 zmrush/rust-learning against try#d8a5ee01b913730aca7ab44c72c8f2722c0533ff for pr-139022
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzmrush%2Frust-learning" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zmrush/rust-learning on toolchain d8a5ee01b913730aca7ab44c72c8f2722c0533ff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zmrush/rust-learning
[INFO] finished tweaking git repo https://github.com/zmrush/rust-learning
[INFO] tweaked toml for git repo https://github.com/zmrush/rust-learning written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/zmrush/rust-learning 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" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "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 zmrush/rust-learning against try#d8a5ee01b913730aca7ab44c72c8f2722c0533ff for pr-139022
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzmrush%2Frust-learning" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zmrush/rust-learning on toolchain d8a5ee01b913730aca7ab44c72c8f2722c0533ff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zmrush/rust-learning
[INFO] finished tweaking git repo https://github.com/zmrush/rust-learning
[INFO] tweaked toml for git repo https://github.com/zmrush/rust-learning written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/zmrush/rust-learning 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" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc1748cb70014c5c27752058c8ba15a96b8916062d65c19964408097736b9f6d
[INFO] running `Command { std: "docker" "start" "-a" "cc1748cb70014c5c27752058c8ba15a96b8916062d65c19964408097736b9f6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc1748cb70014c5c27752058c8ba15a96b8916062d65c19964408097736b9f6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc1748cb70014c5c27752058c8ba15a96b8916062d65c19964408097736b9f6d", kill_on_drop: false }`
[INFO] [stdout] cc1748cb70014c5c27752058c8ba15a96b8916062d65c19964408097736b9f6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+d8a5ee01b913730aca7ab44c72c8f2722c0533ff" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc15970ea1035772dbfbfdea89fdb5d5f71ded42bc0caba6f6b889222352cd55
[INFO] running `Command { std: "docker" "start" "-a" "fc15970ea1035772dbfbfdea89fdb5d5f71ded42bc0caba6f6b889222352cd55", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `g`
[INFO] [stdout]   --> tests/test_trait_lifetime.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let g = G{
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_g`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0597]: `b` does not live long enough
[INFO] [stdout]   --> tests/test_trait_lifetime.rs:54:18
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut b: Option<Box<dyn X>> = Some(Box::new(XX));
[INFO] [stdout]    |         ----- binding `b` declared here
[INFO] [stdout] ...
[INFO] [stdout] 54 |         mut_ref: b.as_deref_mut()
[INFO] [stdout]    |                  ^ borrowed value does not live long enough
[INFO] [stdout] ...
[INFO] [stdout] 61 | }
[INFO] [stdout]    | -
[INFO] [stdout]    | |
[INFO] [stdout]    | `b` dropped here while still borrowed
[INFO] [stdout]    | borrow might be used here, when `b` is dropped and runs the destructor for type `Option<Box<dyn X>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0597`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-learning` (test "test_trait_lifetime") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "fc15970ea1035772dbfbfdea89fdb5d5f71ded42bc0caba6f6b889222352cd55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc15970ea1035772dbfbfdea89fdb5d5f71ded42bc0caba6f6b889222352cd55", kill_on_drop: false }`
[INFO] [stdout] fc15970ea1035772dbfbfdea89fdb5d5f71ded42bc0caba6f6b889222352cd55