[INFO] crate cascade 0.1.4 is already in cache
[INFO] testing cascade-0.1.4 against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] extracting crate cascade 0.1.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cascade 0.1.4 on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate cascade 0.1.4
[INFO] finished tweaking crates.io crate cascade 0.1.4
[INFO] tweaked toml for crates.io crate cascade 0.1.4 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate cascade 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f9f13b9b07c17ef7577514617a2152aa02519b909f89587d46b3552033243274
[INFO] running `"docker" "start" "-a" "f9f13b9b07c17ef7577514617a2152aa02519b909f89587d46b3552033243274"`
[INFO] [stderr]    Compiling cascade v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `"docker" "inspect" "f9f13b9b07c17ef7577514617a2152aa02519b909f89587d46b3552033243274"`
[INFO] running `"docker" "rm" "-f" "f9f13b9b07c17ef7577514617a2152aa02519b909f89587d46b3552033243274"`
[INFO] [stdout] f9f13b9b07c17ef7577514617a2152aa02519b909f89587d46b3552033243274
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4f5fc918b8848634ddc456451ae6f98e8531bf4c53fa8df1af0575b502bf4858
[INFO] running `"docker" "start" "-a" "4f5fc918b8848634ddc456451ae6f98e8531bf4c53fa8df1af0575b502bf4858"`
[INFO] [stderr]    Compiling cascade v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `method_chain_example`
[INFO] [stderr]   --> examples/basic_cascades.rs:87:7
[INFO] [stderr]    |
[INFO] [stderr] 87 |   let method_chain_example = cascade! {
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_method_chain_example`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/basic_cascades.rs:93:3
[INFO] [stderr]    |
[INFO] [stderr] 93 |   option_cascade_test();
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "4f5fc918b8848634ddc456451ae6f98e8531bf4c53fa8df1af0575b502bf4858"`
[INFO] running `"docker" "rm" "-f" "4f5fc918b8848634ddc456451ae6f98e8531bf4c53fa8df1af0575b502bf4858"`
[INFO] [stdout] 4f5fc918b8848634ddc456451ae6f98e8531bf4c53fa8df1af0575b502bf4858
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a13590070ea1ad944391a515445c65cc5cfc3110a8a6f1070c3cbbab58111b0e
[INFO] running `"docker" "start" "-a" "a13590070ea1ad944391a515445c65cc5cfc3110a8a6f1070c3cbbab58111b0e"`
[INFO] [stderr] warning: unused variable: `method_chain_example`
[INFO] [stderr]   --> examples/basic_cascades.rs:87:7
[INFO] [stderr]    |
[INFO] [stderr] 87 |   let method_chain_example = cascade! {
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_method_chain_example`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/basic_cascades.rs:93:3
[INFO] [stderr]    |
[INFO] [stderr] 93 |   option_cascade_test();
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/cascade-97fc23d783e0ad52
[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
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cascade
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - cascade (line 11) ... ok
[INFO] [stdout] test src/lib.rs - cascade (line 58) ... ok
[INFO] [stdout] test src/lib.rs - cascade (line 43) ... ok
[INFO] [stdout] test src/lib.rs - cascade (line 28) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "a13590070ea1ad944391a515445c65cc5cfc3110a8a6f1070c3cbbab58111b0e"`
[INFO] running `"docker" "rm" "-f" "a13590070ea1ad944391a515445c65cc5cfc3110a8a6f1070c3cbbab58111b0e"`
[INFO] [stdout] a13590070ea1ad944391a515445c65cc5cfc3110a8a6f1070c3cbbab58111b0e