[INFO] fetching crate math-kit 2.0.0...
[INFO] testing math-kit-2.0.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate math-kit 2.0.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate math-kit 2.0.0
[INFO] finished tweaking crates.io crate math-kit 2.0.0
[INFO] tweaked toml for crates.io crate math-kit 2.0.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate math-kit 2.0.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 146e5557f8e42f858be406a5b8bfe858caa4ed7b57a6ff6239d0ecef30bb0648
[INFO] running `Command { std: "docker" "start" "-a" "146e5557f8e42f858be406a5b8bfe858caa4ed7b57a6ff6239d0ecef30bb0648", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "146e5557f8e42f858be406a5b8bfe858caa4ed7b57a6ff6239d0ecef30bb0648", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "146e5557f8e42f858be406a5b8bfe858caa4ed7b57a6ff6239d0ecef30bb0648", kill_on_drop: false }`
[INFO] [stdout] 146e5557f8e42f858be406a5b8bfe858caa4ed7b57a6ff6239d0ecef30bb0648
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fbbaf5f50e604745a928b01e5f9be4b8e89ca39edf85201fc9d3eeacad06bde
[INFO] running `Command { std: "docker" "start" "-a" "2fbbaf5f50e604745a928b01e5f9be4b8e89ca39edf85201fc9d3eeacad06bde", kill_on_drop: false }`
[INFO] [stderr]    Compiling math-kit v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "2fbbaf5f50e604745a928b01e5f9be4b8e89ca39edf85201fc9d3eeacad06bde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fbbaf5f50e604745a928b01e5f9be4b8e89ca39edf85201fc9d3eeacad06bde", kill_on_drop: false }`
[INFO] [stdout] 2fbbaf5f50e604745a928b01e5f9be4b8e89ca39edf85201fc9d3eeacad06bde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0bb448cd471cda7fd33f459555bee6060c3fec46258c20823bcf480ac437b99
[INFO] running `Command { std: "docker" "start" "-a" "c0bb448cd471cda7fd33f459555bee6060c3fec46258c20823bcf480ac437b99", kill_on_drop: false }`
[INFO] [stderr]    Compiling math-kit v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/lib.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `add` in this scope
[INFO] [stdout]   --> src/lib.rs:33:22
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let result = add(2, 2);
[INFO] [stdout]    |                      ^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> src/lib.rs:3:8
[INFO] [stdout]    |
[INFO] [stdout]  2 | #[cfg(feature="add")]
[INFO] [stdout]    |       ------------- the item is gated behind the `add` feature
[INFO] [stdout]  3 | pub fn add(left: usize, right: usize) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] help: use the `.` operator to call the method `Add::add` on `{integer}`
[INFO] [stdout]    |
[INFO] [stdout] 33 -         let result = add(2, 2);
[INFO] [stdout] 33 +         let result = 2.add(2);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `discount` in this scope
[INFO] [stdout]   --> src/lib.rs:39:22
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let result = discount(100_000.0, 25.0);
[INFO] [stdout]    |                      ^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> src/lib.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | #[cfg(feature="discount")]
[INFO] [stdout]    |       ------------------ the item is gated behind the `discount` feature
[INFO] [stdout] 23 | pub fn discount(total: f64, discount: f64) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `math-kit` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "c0bb448cd471cda7fd33f459555bee6060c3fec46258c20823bcf480ac437b99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0bb448cd471cda7fd33f459555bee6060c3fec46258c20823bcf480ac437b99", kill_on_drop: false }`
[INFO] [stdout] c0bb448cd471cda7fd33f459555bee6060c3fec46258c20823bcf480ac437b99