[INFO] fetching crate birds 0.2.0...
[INFO] testing birds-0.2.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate birds 0.2.0 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate birds 0.2.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-26/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 137a5e30ae5a8b0edb1eda9c028ce7af70aa51048cf09eb3c9aec52c18d5f663
[INFO] running `Command { std: "docker" "start" "-a" "137a5e30ae5a8b0edb1eda9c028ce7af70aa51048cf09eb3c9aec52c18d5f663", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "137a5e30ae5a8b0edb1eda9c028ce7af70aa51048cf09eb3c9aec52c18d5f663", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "137a5e30ae5a8b0edb1eda9c028ce7af70aa51048cf09eb3c9aec52c18d5f663", kill_on_drop: false }`
[INFO] [stdout] 137a5e30ae5a8b0edb1eda9c028ce7af70aa51048cf09eb3c9aec52c18d5f663
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dea9e25ceb1ca9d6bb94af7343d72a074aeaca037032cf36dae6a4accdf4ce69
[INFO] running `Command { std: "docker" "start" "-a" "dea9e25ceb1ca9d6bb94af7343d72a074aeaca037032cf36dae6a4accdf4ce69", 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] 145 | | {
[INFO] [stdout] 146 | |     x(sage(x.clone()))
[INFO] [stdout]     | |       --------------- recursive call site
[INFO] [stdout] 147 | | }
[INFO] [stdout]     | |_^ cannot return without recursing
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "dea9e25ceb1ca9d6bb94af7343d72a074aeaca037032cf36dae6a4accdf4ce69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dea9e25ceb1ca9d6bb94af7343d72a074aeaca037032cf36dae6a4accdf4ce69", kill_on_drop: false }`
[INFO] [stdout] dea9e25ceb1ca9d6bb94af7343d72a074aeaca037032cf36dae6a4accdf4ce69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79346c6f3e2e340ecc6bff907bc9aaf7783a4f53de978bfbf2229e6c54c53342
[INFO] running `Command { std: "docker" "start" "-a" "79346c6f3e2e340ecc6bff907bc9aaf7783a4f53de978bfbf2229e6c54c53342", 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] 145 | | {
[INFO] [stdout] 146 | |     x(sage(x.clone()))
[INFO] [stdout]     | |       --------------- recursive call site
[INFO] [stdout] 147 | | }
[INFO] [stdout]     | |_^ cannot return without recursing
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[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] 145 | | {
[INFO] [stdout] 146 | |     x(sage(x.clone()))
[INFO] [stdout]     | |       --------------- recursive call site
[INFO] [stdout] 147 | | }
[INFO] [stdout]     | |_^ cannot return without recursing
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/birds-c3a438e79a5a75bd)
[INFO] running `Command { std: "docker" "inspect" "79346c6f3e2e340ecc6bff907bc9aaf7783a4f53de978bfbf2229e6c54c53342", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79346c6f3e2e340ecc6bff907bc9aaf7783a4f53de978bfbf2229e6c54c53342", kill_on_drop: false }`
[INFO] [stdout] 79346c6f3e2e340ecc6bff907bc9aaf7783a4f53de978bfbf2229e6c54c53342
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a21dde191f362effb78863347dfb26a56136b0f47b1d6010119ac0b0d0731836
[INFO] running `Command { std: "docker" "start" "-a" "a21dde191f362effb78863347dfb26a56136b0f47b1d6010119ac0b0d0731836", 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] 145 | | {
[INFO] [stderr] 146 | |     x(sage(x.clone()))
[INFO] [stderr]     | |       --------------- recursive call site
[INFO] [stderr] 147 | | }
[INFO] [stderr]     | |_^ cannot return without recursing
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stderr]     = help: a `loop` may express intention better if this is on purpose
[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 [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/birds-c3a438e79a5a75bd)
[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 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] running `Command { std: "docker" "inspect" "a21dde191f362effb78863347dfb26a56136b0f47b1d6010119ac0b0d0731836", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a21dde191f362effb78863347dfb26a56136b0f47b1d6010119ac0b0d0731836", kill_on_drop: false }`
[INFO] [stdout] a21dde191f362effb78863347dfb26a56136b0f47b1d6010119ac0b0d0731836