[INFO] cloning repository https://github.com/Triballian/isfnset
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Triballian/isfnset" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTriballian%2Fisfnset", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTriballian%2Fisfnset'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bc35866656abd624dea57900833f1c4e0297c8c9
[INFO] testing Triballian/isfnset against try#a7ce54db9b096bd1098d07c645b489195a667c9f for pr-137940
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTriballian%2Fisfnset" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Triballian/isfnset on toolchain a7ce54db9b096bd1098d07c645b489195a667c9f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Triballian/isfnset
[INFO] finished tweaking git repo https://github.com/Triballian/isfnset
[INFO] tweaked toml for git repo https://github.com/Triballian/isfnset written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Triballian/isfnset 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" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1d4ade7742615634bf1cd20c88d5ab6b9218e47fa2bf725226a04a606f52d2e
[INFO] running `Command { std: "docker" "start" "-a" "d1d4ade7742615634bf1cd20c88d5ab6b9218e47fa2bf725226a04a606f52d2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1d4ade7742615634bf1cd20c88d5ab6b9218e47fa2bf725226a04a606f52d2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1d4ade7742615634bf1cd20c88d5ab6b9218e47fa2bf725226a04a606f52d2e", kill_on_drop: false }`
[INFO] [stdout] d1d4ade7742615634bf1cd20c88d5ab6b9218e47fa2bf725226a04a606f52d2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2dac130b95354c6324c2e1e43866f07fba3690aa9a9ab083593a1c775f8b1d82
[INFO] running `Command { std: "docker" "start" "-a" "2dac130b95354c6324c2e1e43866f07fba3690aa9a9ab083593a1c775f8b1d82", kill_on_drop: false }`
[INFO] [stderr]    Compiling isfnset v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `field` is never read
[INFO] [stdout]  --> src/isfn/isfno.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Fnel {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 4 |     pub domain: i32,
[INFO] [stdout] 5 |     pub field: i32
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Fnel` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/isfn/isfno.rs:30:21
[INFO] [stdout]    |
[INFO] [stdout] 30 |                     &adoms.push(set.domain);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 30 |                     let _ = &adoms.push(set.domain);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "2dac130b95354c6324c2e1e43866f07fba3690aa9a9ab083593a1c775f8b1d82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dac130b95354c6324c2e1e43866f07fba3690aa9a9ab083593a1c775f8b1d82", kill_on_drop: false }`
[INFO] [stdout] 2dac130b95354c6324c2e1e43866f07fba3690aa9a9ab083593a1c775f8b1d82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a98212e0efbb109a751deef4eadc8f42c75fd233cba21d7b7f1da257f35b752
[INFO] running `Command { std: "docker" "start" "-a" "8a98212e0efbb109a751deef4eadc8f42c75fd233cba21d7b7f1da257f35b752", kill_on_drop: false }`
[INFO] [stderr]    Compiling isfnset v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `field` is never read
[INFO] [stdout]  --> src/isfn/isfno.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Fnel {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 4 |     pub domain: i32,
[INFO] [stdout] 5 |     pub field: i32
[INFO] [stdout]   |         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Fnel` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/isfn/isfno.rs:30:21
[INFO] [stdout]    |
[INFO] [stdout] 30 |                     &adoms.push(set.domain);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 30 |                     let _ = &adoms.push(set.domain);
[INFO] [stdout]    |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "8a98212e0efbb109a751deef4eadc8f42c75fd233cba21d7b7f1da257f35b752", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a98212e0efbb109a751deef4eadc8f42c75fd233cba21d7b7f1da257f35b752", kill_on_drop: false }`
[INFO] [stdout] 8a98212e0efbb109a751deef4eadc8f42c75fd233cba21d7b7f1da257f35b752
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c52d4c66841bd2addbd92373c7402b6c9e354e7ce8b4003c25a418660633d838
[INFO] running `Command { std: "docker" "start" "-a" "c52d4c66841bd2addbd92373c7402b6c9e354e7ce8b4003c25a418660633d838", kill_on_drop: false }`
[INFO] [stderr] warning: field `field` is never read
[INFO] [stderr]  --> src/isfn/isfno.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct Fnel {
[INFO] [stderr]   |            ---- field in this struct
[INFO] [stderr] 4 |     pub domain: i32,
[INFO] [stderr] 5 |     pub field: i32
[INFO] [stderr]   |         ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `Fnel` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/isfn/isfno.rs:30:21
[INFO] [stderr]    |
[INFO] [stderr] 30 |                     &adoms.push(set.domain);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 30 |                     let _ = &adoms.push(set.domain);
[INFO] [stderr]    |                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `isfnset` (bin "isfnset" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/isfnset-774803988e6f5e1b)
[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" "c52d4c66841bd2addbd92373c7402b6c9e354e7ce8b4003c25a418660633d838", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c52d4c66841bd2addbd92373c7402b6c9e354e7ce8b4003c25a418660633d838", kill_on_drop: false }`
[INFO] [stdout] c52d4c66841bd2addbd92373c7402b6c9e354e7ce8b4003c25a418660633d838