[INFO] fetching crate recursion-visualize 0.5.0...
[INFO] testing recursion-visualize-0.5.0 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate recursion-visualize 0.5.0 into /workspace/builds/worker-2-tc1/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-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate recursion-visualize 0.5.0 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded recursion v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3fb18d8cffb8dcb6ca201bd013ee80866775b17487e8c79ab24bcba6c1ce36f2
[INFO] running `Command { std: "docker" "start" "-a" "3fb18d8cffb8dcb6ca201bd013ee80866775b17487e8c79ab24bcba6c1ce36f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fb18d8cffb8dcb6ca201bd013ee80866775b17487e8c79ab24bcba6c1ce36f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fb18d8cffb8dcb6ca201bd013ee80866775b17487e8c79ab24bcba6c1ce36f2", kill_on_drop: false }`
[INFO] [stdout] 3fb18d8cffb8dcb6ca201bd013ee80866775b17487e8c79ab24bcba6c1ce36f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] a1cb12f075e0d4b775f5542bbd5f1e204dbf0196c8bd1f565a7f1709ec440e01
[INFO] running `Command { std: "docker" "start" "-a" "a1cb12f075e0d4b775f5542bbd5f1e204dbf0196c8bd1f565a7f1709ec440e01", kill_on_drop: false }`
[INFO] [stderr]    Compiling recursion v0.5.1
[INFO] [stderr]    Compiling json v0.12.4
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]    Compiling recursion-visualize v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.44s
[INFO] running `Command { std: "docker" "inspect" "a1cb12f075e0d4b775f5542bbd5f1e204dbf0196c8bd1f565a7f1709ec440e01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1cb12f075e0d4b775f5542bbd5f1e204dbf0196c8bd1f565a7f1709ec440e01", kill_on_drop: false }`
[INFO] [stdout] a1cb12f075e0d4b775f5542bbd5f1e204dbf0196c8bd1f565a7f1709ec440e01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] f68d6604e02f23940852a7d016a82b90691812309a7377b49007ccd062e31aed
[INFO] running `Command { std: "docker" "start" "-a" "f68d6604e02f23940852a7d016a82b90691812309a7377b49007ccd062e31aed", 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "f68d6604e02f23940852a7d016a82b90691812309a7377b49007ccd062e31aed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f68d6604e02f23940852a7d016a82b90691812309a7377b49007ccd062e31aed", kill_on_drop: false }`
[INFO] [stdout] f68d6604e02f23940852a7d016a82b90691812309a7377b49007ccd062e31aed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] d7a4a94e6ece4988ddbf22ce7874485b8ef1fe8eb366cdacd45c12ab83752654
[INFO] running `Command { std: "docker" "start" "-a" "d7a4a94e6ece4988ddbf22ce7874485b8ef1fe8eb366cdacd45c12ab83752654", 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)]` 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 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/recursion_visualize-eb8266fbd442e399)
[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" "d7a4a94e6ece4988ddbf22ce7874485b8ef1fe8eb366cdacd45c12ab83752654", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7a4a94e6ece4988ddbf22ce7874485b8ef1fe8eb366cdacd45c12ab83752654", kill_on_drop: false }`
[INFO] [stdout] d7a4a94e6ece4988ddbf22ce7874485b8ef1fe8eb366cdacd45c12ab83752654