[INFO] fetching crate recursion-visualize 0.5.0...
[INFO] testing recursion-visualize-0.5.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate recursion-visualize 0.5.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate recursion-visualize 0.5.0
[INFO] finished tweaking crates.io crate recursion-visualize 0.5.0
[INFO] tweaked toml for crates.io crate recursion-visualize 0.5.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate recursion-visualize 0.5.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate recursion-visualize 0.5.0 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 085645c8ce48b0c4514d3e983a3a2196b20343fc7195239b9565be86af4bfe60
[INFO] running `Command { std: "docker" "start" "-a" "085645c8ce48b0c4514d3e983a3a2196b20343fc7195239b9565be86af4bfe60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "085645c8ce48b0c4514d3e983a3a2196b20343fc7195239b9565be86af4bfe60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "085645c8ce48b0c4514d3e983a3a2196b20343fc7195239b9565be86af4bfe60", kill_on_drop: false }`
[INFO] [stdout] 085645c8ce48b0c4514d3e983a3a2196b20343fc7195239b9565be86af4bfe60
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b196384b5c3a643751ac728c8349c9fe99a18b150a7fd97bf78b005c6ac9addb
[INFO] running `Command { std: "docker" "start" "-a" "b196384b5c3a643751ac728c8349c9fe99a18b150a7fd97bf78b005c6ac9addb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]    Compiling itoa v1.0.9
[INFO] [stderr]    Compiling ryu v1.0.15
[INFO] [stderr]    Compiling json v0.12.4
[INFO] [stderr]    Compiling recursion v0.5.1
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]    Compiling recursion-visualize v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.46s
[INFO] running `Command { std: "docker" "inspect" "b196384b5c3a643751ac728c8349c9fe99a18b150a7fd97bf78b005c6ac9addb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b196384b5c3a643751ac728c8349c9fe99a18b150a7fd97bf78b005c6ac9addb", kill_on_drop: false }`
[INFO] [stdout] b196384b5c3a643751ac728c8349c9fe99a18b150a7fd97bf78b005c6ac9addb
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73e838e0bd50ed03e96139ec5c2492bb762cb5dfe33988f1d3b66cc2af0efdaf
[INFO] running `Command { std: "docker" "start" "-a" "73e838e0bd50ed03e96139ec5c2492bb762cb5dfe33988f1d3b66cc2af0efdaf", kill_on_drop: false }`
[INFO] [stderr]    Compiling recursion-visualize v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]    --> examples/expr.rs:131:12
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn add(a: Expr, b: Expr) -> Expr {
[INFO] [stdout]     |            ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "73e838e0bd50ed03e96139ec5c2492bb762cb5dfe33988f1d3b66cc2af0efdaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73e838e0bd50ed03e96139ec5c2492bb762cb5dfe33988f1d3b66cc2af0efdaf", kill_on_drop: false }`
[INFO] [stdout] 73e838e0bd50ed03e96139ec5c2492bb762cb5dfe33988f1d3b66cc2af0efdaf
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1519e6948b82ce13ba84bea3fe707cf5b173541676e4ba1e85037293e31afa34
[INFO] running `Command { std: "docker" "start" "-a" "1519e6948b82ce13ba84bea3fe707cf5b173541676e4ba1e85037293e31afa34", kill_on_drop: false }`
[INFO] [stderr] warning: function `add` is never used
[INFO] [stderr]    --> examples/expr.rs:131:12
[INFO] [stderr]     |
[INFO] [stderr] 131 |     pub fn add(a: Expr, b: Expr) -> Expr {
[INFO] [stderr]     |            ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `recursion-visualize` (example "expr") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/recursion_visualize-a95446c5c4fa393c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests recursion_visualize
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1519e6948b82ce13ba84bea3fe707cf5b173541676e4ba1e85037293e31afa34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1519e6948b82ce13ba84bea3fe707cf5b173541676e4ba1e85037293e31afa34", kill_on_drop: false }`
[INFO] [stdout] 1519e6948b82ce13ba84bea3fe707cf5b173541676e4ba1e85037293e31afa34