[INFO] fetching crate birds 0.2.0...
[INFO] testing birds-0.2.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate birds 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate birds 0.2.0
[INFO] finished tweaking crates.io crate birds 0.2.0
[INFO] tweaked toml for crates.io crate birds 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate birds 0.2.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 34160d7eb9ffd256d192ac5710dfc1ecc53a2c89c0fe40026723c59ec11cccda
[INFO] running `Command { std: "docker" "start" "-a" "34160d7eb9ffd256d192ac5710dfc1ecc53a2c89c0fe40026723c59ec11cccda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34160d7eb9ffd256d192ac5710dfc1ecc53a2c89c0fe40026723c59ec11cccda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34160d7eb9ffd256d192ac5710dfc1ecc53a2c89c0fe40026723c59ec11cccda", kill_on_drop: false }`
[INFO] [stdout] 34160d7eb9ffd256d192ac5710dfc1ecc53a2c89c0fe40026723c59ec11cccda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c970fd827d9f3f7909581694159eae59bec0850a11ed9c6b6f971c56e0b244e
[INFO] running `Command { std: "docker" "start" "-a" "5c970fd827d9f3f7909581694159eae59bec0850a11ed9c6b6f971c56e0b244e", kill_on_drop: false }`
[INFO] [stderr]    Compiling birds v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/lib.rs:142:1
[INFO] [stdout]     |
[INFO] [stdout] 142 | / pub fn sage<A, X>(x: X) -> A
[INFO] [stdout] 143 | | where
[INFO] [stdout] 144 | |     X: Fn(A) -> A + Clone,
[INFO] [stdout]     | |__________________________^ cannot return without recursing
[INFO] [stdout] 145 |   {
[INFO] [stdout] 146 |       x(sage(x.clone()))
[INFO] [stdout]     |         --------------- recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "5c970fd827d9f3f7909581694159eae59bec0850a11ed9c6b6f971c56e0b244e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c970fd827d9f3f7909581694159eae59bec0850a11ed9c6b6f971c56e0b244e", kill_on_drop: false }`
[INFO] [stdout] 5c970fd827d9f3f7909581694159eae59bec0850a11ed9c6b6f971c56e0b244e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e0ba2f58f3c2c0d2e4caf00e31936cc3b9263729953ae889219da06236550ceb
[INFO] running `Command { std: "docker" "start" "-a" "e0ba2f58f3c2c0d2e4caf00e31936cc3b9263729953ae889219da06236550ceb", kill_on_drop: false }`
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/lib.rs:142:1
[INFO] [stdout]     |
[INFO] [stdout] 142 | / pub fn sage<A, X>(x: X) -> A
[INFO] [stdout] 143 | | where
[INFO] [stdout] 144 | |     X: Fn(A) -> A + Clone,
[INFO] [stdout]     | |__________________________^ cannot return without recursing
[INFO] [stdout] 145 |   {
[INFO] [stdout] 146 |       x(sage(x.clone()))
[INFO] [stdout]     |         --------------- recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling birds v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/lib.rs:142:1
[INFO] [stdout]     |
[INFO] [stdout] 142 | / pub fn sage<A, X>(x: X) -> A
[INFO] [stdout] 143 | | where
[INFO] [stdout] 144 | |     X: Fn(A) -> A + Clone,
[INFO] [stdout]     | |__________________________^ cannot return without recursing
[INFO] [stdout] 145 |   {
[INFO] [stdout] 146 |       x(sage(x.clone()))
[INFO] [stdout]     |         --------------- recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "e0ba2f58f3c2c0d2e4caf00e31936cc3b9263729953ae889219da06236550ceb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0ba2f58f3c2c0d2e4caf00e31936cc3b9263729953ae889219da06236550ceb", kill_on_drop: false }`
[INFO] [stdout] e0ba2f58f3c2c0d2e4caf00e31936cc3b9263729953ae889219da06236550ceb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cc3224f5f381bae608422311ce2268c275d69e788ba66c0a32c9cb053977526a
[INFO] running `Command { std: "docker" "start" "-a" "cc3224f5f381bae608422311ce2268c275d69e788ba66c0a32c9cb053977526a", kill_on_drop: false }`
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]    --> src/lib.rs:142:1
[INFO] [stderr]     |
[INFO] [stderr] 142 | / pub fn sage<A, X>(x: X) -> A
[INFO] [stderr] 143 | | where
[INFO] [stderr] 144 | |     X: Fn(A) -> A + Clone,
[INFO] [stderr]     | |__________________________^ cannot return without recursing
[INFO] [stderr] 145 |   {
[INFO] [stderr] 146 |       x(sage(x.clone()))
[INFO] [stderr]     |         --------------- recursive call site
[INFO] [stderr]     |
[INFO] [stderr]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `birds` (lib) generated 1 warning
[INFO] [stderr] warning: `birds` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/birds-57bf0c9028f96c77)
[INFO] [stderr]    Doc-tests birds
[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] [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" "cc3224f5f381bae608422311ce2268c275d69e788ba66c0a32c9cb053977526a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc3224f5f381bae608422311ce2268c275d69e788ba66c0a32c9cb053977526a", kill_on_drop: false }`
[INFO] [stdout] cc3224f5f381bae608422311ce2268c275d69e788ba66c0a32c9cb053977526a
