[INFO] fetching crate rootfind 0.7.0...
[INFO] testing rootfind-0.7.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate rootfind 0.7.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rootfind 0.7.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rootfind 0.7.0
[INFO] finished tweaking crates.io crate rootfind 0.7.0
[INFO] tweaked toml for crates.io crate rootfind 0.7.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d04866d1d7c5d65d4ac7f1edd6fef157c644d12f4b95c683c444495b92d834e
[INFO] running `Command { std: "docker" "start" "-a" "6d04866d1d7c5d65d4ac7f1edd6fef157c644d12f4b95c683c444495b92d834e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d04866d1d7c5d65d4ac7f1edd6fef157c644d12f4b95c683c444495b92d834e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d04866d1d7c5d65d4ac7f1edd6fef157c644d12f4b95c683c444495b92d834e", kill_on_drop: false }`
[INFO] [stdout] 6d04866d1d7c5d65d4ac7f1edd6fef157c644d12f4b95c683c444495b92d834e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 282cfb2b8680f9de9e4fc041e78cb1fb95a6c63cd842c0dc70027022d062a73a
[INFO] running `Command { std: "docker" "start" "-a" "282cfb2b8680f9de9e4fc041e78cb1fb95a6c63cd842c0dc70027022d062a73a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rootfind v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "282cfb2b8680f9de9e4fc041e78cb1fb95a6c63cd842c0dc70027022d062a73a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "282cfb2b8680f9de9e4fc041e78cb1fb95a6c63cd842c0dc70027022d062a73a", kill_on_drop: false }`
[INFO] [stdout] 282cfb2b8680f9de9e4fc041e78cb1fb95a6c63cd842c0dc70027022d062a73a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] acb9274285ab5a68dec51c53fa767ef8a78cdb6d9dde9e3450001171b62bffe2
[INFO] running `Command { std: "docker" "start" "-a" "acb9274285ab5a68dec51c53fa767ef8a78cdb6d9dde9e3450001171b62bffe2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rootfind v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/integration.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |             format!("got={}, wanted={}", computed_root, expected_root)
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of assert!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 34 -             format!("got={}, wanted={}", computed_root, expected_root)
[INFO] [stdout] 34 +             "got={}, wanted={}", computed_root, expected_root
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/solver.rs:326:16
[INFO] [stdout]     |
[INFO] [stdout] 326 |         f: Box<Fn(f64) -> f64>,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 326 -         f: Box<Fn(f64) -> f64>,
[INFO] [stdout] 326 +         f: Box<dyn Fn(f64) -> f64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/solver.rs:327:17
[INFO] [stdout]     |
[INFO] [stdout] 327 |         df: Box<Fn(f64) -> f64>,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 327 -         df: Box<Fn(f64) -> f64>,
[INFO] [stdout] 327 +         df: Box<dyn Fn(f64) -> f64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/solver.rs:328:18
[INFO] [stdout]     |
[INFO] [stdout] 328 |         d2f: Box<Fn(f64) -> f64>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 328 -         d2f: Box<Fn(f64) -> f64>,
[INFO] [stdout] 328 +         d2f: Box<dyn Fn(f64) -> f64>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/solver.rs:947:21
[INFO] [stdout]     |
[INFO] [stdout] 947 |                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of assert!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 947 -                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stdout] 947 +                     "{} root wanted={}, got={}", t.name, t.roots[i], root
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/solver.rs:967:21
[INFO] [stdout]     |
[INFO] [stdout] 967 |                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of assert!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 967 -                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stdout] 967 +                     "{} root wanted={}, got={}", t.name, t.roots[i], root
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/solver.rs:987:21
[INFO] [stdout]     |
[INFO] [stdout] 987 |                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of assert!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]     |
[INFO] [stdout] 987 -                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stdout] 987 +                     "{} root wanted={}, got={}", t.name, t.roots[i], root
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/solver.rs:1003:21
[INFO] [stdout]      |
[INFO] [stdout] 1003 |                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stdout]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this usage of assert!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]      = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]      |
[INFO] [stdout] 1003 -                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stdout] 1003 +                     "{} root wanted={}, got={}", t.name, t.roots[i], root
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.62s
[INFO] running `Command { std: "docker" "inspect" "acb9274285ab5a68dec51c53fa767ef8a78cdb6d9dde9e3450001171b62bffe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acb9274285ab5a68dec51c53fa767ef8a78cdb6d9dde9e3450001171b62bffe2", kill_on_drop: false }`
[INFO] [stdout] acb9274285ab5a68dec51c53fa767ef8a78cdb6d9dde9e3450001171b62bffe2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0b58451671b5d7efccd7c24faecbe296ca37af4351757d12316e3f81158db311
[INFO] running `Command { std: "docker" "start" "-a" "0b58451671b5d7efccd7c24faecbe296ca37af4351757d12316e3f81158db311", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/solver.rs:326:16
[INFO] [stderr]     |
[INFO] [stderr] 326 |         f: Box<Fn(f64) -> f64>,
[INFO] [stderr]     |                ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 326 -         f: Box<Fn(f64) -> f64>,
[INFO] [stderr] 326 +         f: Box<dyn Fn(f64) -> f64>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/solver.rs:327:17
[INFO] [stderr]     |
[INFO] [stderr] 327 |         df: Box<Fn(f64) -> f64>,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 327 -         df: Box<Fn(f64) -> f64>,
[INFO] [stderr] 327 +         df: Box<dyn Fn(f64) -> f64>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/solver.rs:328:18
[INFO] [stderr]     |
[INFO] [stderr] 328 |         d2f: Box<Fn(f64) -> f64>,
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 328 -         d2f: Box<Fn(f64) -> f64>,
[INFO] [stderr] 328 +         d2f: Box<dyn Fn(f64) -> f64>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/solver.rs:947:21
[INFO] [stderr]     |
[INFO] [stderr] 947 |                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr]     = note: this usage of assert!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]     |
[INFO] [stderr] 947 -                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stderr] 947 +                     "{} root wanted={}, got={}", t.name, t.roots[i], root
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/solver.rs:967:21
[INFO] [stderr]     |
[INFO] [stderr] 967 |                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of assert!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]     |
[INFO] [stderr] 967 -                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stderr] 967 +                     "{} root wanted={}, got={}", t.name, t.roots[i], root
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/solver.rs:987:21
[INFO] [stderr]     |
[INFO] [stderr] 987 |                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of assert!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]     |
[INFO] [stderr] 987 -                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stderr] 987 +                     "{} root wanted={}, got={}", t.name, t.roots[i], root
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]     --> src/solver.rs:1003:21
[INFO] [stderr]      |
[INFO] [stderr] 1003 |                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stderr]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this usage of assert!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]      = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]      |
[INFO] [stderr] 1003 -                     format!("{} root wanted={}, got={}", t.name, t.roots[i], root)
[INFO] [stderr] 1003 +                     "{} root wanted={}, got={}", t.name, t.roots[i], root
[INFO] [stderr]      | 
[INFO] [stderr] 
[INFO] [stderr] warning: `rootfind` (lib test) generated 7 warnings
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]   --> tests/integration.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |             format!("got={}, wanted={}", computed_root, expected_root)
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr]    = note: this usage of assert!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]    = note: the assert!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stderr] help: remove the `format!(..)` macro call
[INFO] [stderr]    |
[INFO] [stderr] 34 -             format!("got={}, wanted={}", computed_root, expected_root)
[INFO] [stderr] 34 +             "got={}, wanted={}", computed_root, expected_root
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `rootfind` (test "integration") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rootfind-9df4d739b3aef720)
[INFO] [stdout] 
[INFO] [stdout] running 42 tests
[INFO] [stdout] test bracket::tests::test_bounds_middle_degenerate ... ok
[INFO] [stdout] test bracket::tests::test_bounds_middle_symmetric ... ok
[INFO] [stdout] test bracket::tests::test_bounds_middle_offset ... ok
[INFO] [stdout] test bracket::tests::test_bounds_contains ... ok
[INFO] [stdout] test bracket::tests::test_first_bracket_miss ... ok
[INFO] [stdout] test bracket::tests::test_first_bracket_hit ... ok
[INFO] [stdout] test bracket::tests::test_is_sign_change_overflow ... ok
[INFO] [stdout] test bracket::tests::test_is_sign_change_underflow ... ok
[INFO] [stdout] test bracket::tests::test_bounds_new_signed_zeros ... ok
[INFO] [stdout] test bracket::tests::test_bounds_new_valid ... ok
[INFO] [stdout] test bracket::tests::test_bracket_generator_hits ... ok
[INFO] [stdout] test bracket::tests::test_bounds_size ... ok
[INFO] [stdout] test bracket::tests::test_is_sign_change ... ok
[INFO] [stdout] test bracket::tests::test_bracket_generator_empty ... ok
[INFO] [stdout] test convergence::tests::test_delta_x_convergence ... ok
[INFO] [stdout] test bracket::tests::test_first_bracket_even_degree ... ok
[INFO] [stdout] test convergence::tests::test_fn_residual_convergence ... ok
[INFO] [stdout] test convergence::tests::test_dual_convergence ... ok
[INFO] [stdout] test solver::tests::test_bisection_centered_root ... ok
[INFO] [stdout] test solver::tests::test_newton_zero_derivative ... ok
[INFO] [stdout] test solver::tests::test_pathology_flatlining ... ok
[INFO] [stdout] test solver::tests::test_pathology_microstep ... ok
[INFO] [stdout] test solver::tests::test_table_halley ... ok
[INFO] [stdout] test solver::tests::test_table_illinois ... ok
[INFO] [stdout] test solver::tests::test_table_newton ... ok
[INFO] [stdout] test solver::tests::test_table_bisection ... ok
[INFO] [stdout] test bracket::tests::test_bounds_new_infinite - should panic ... ok
[INFO] [stdout] test bracket::tests::test_bracket_generator_window_negative - should panic ... ok
[INFO] [stdout] test bracket::tests::test_is_sign_change_nan_rhs - should panic ... ok
[INFO] [stdout] test bracket::tests::test_first_bracket_zero_window - should panic ... ok
[INFO] [stdout] test bracket::tests::test_bounds_new_nan - should panic ... ok
[INFO] [stdout] test bracket::tests::test_first_bracket_negative_window - should panic ... ok
[INFO] [stdout] test convergence::tests::test_delta_x_epsabs_nan - should panic ... ok
[INFO] [stdout] test bracket::tests::test_is_sign_change_nan_lhs - should panic ... ok
[INFO] [stdout] test convergence::tests::test_delta_x_epsabs_negative - should panic ... ok
[INFO] [stdout] test bracket::tests::test_bounds_new_flipped_extents - should panic ... ok
[INFO] [stdout] test convergence::tests::test_delta_x_epsabs_zero - should panic ... ok
[INFO] [stdout] test convergence::tests::test_fn_residual_epsabs_nan - should panic ... ok
[INFO] [stdout] test convergence::tests::test_fn_residual_epsabs_negative - should panic ... ok
[INFO] [stdout] test solver::tests::test_bisection_no_straddle - should panic ... ok
[INFO] [stderr]      Running tests/integration.rs (/opt/rustwide/target/debug/deps/integration-ea0354d6c43b5502)
[INFO] [stdout] test solver::tests::test_halley_nonfinite_start - should panic ... ok
[INFO] [stdout] test solver::tests::test_newton_nonfinite_start - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 42 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_end_to_end ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rootfind
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/wrap.rs - wrap (line 36) ... ok
[INFO] [stdout] test src/wrap.rs - wrap (line 22) ... ok
[INFO] [stdout] test src/bracket.rs - bracket (line 25) ... ok
[INFO] [stdout] test src/convergence.rs - convergence (line 16) ... ok
[INFO] [stdout] test src/solver.rs - solver (line 35) ... ok
[INFO] [stdout] test src/solver.rs - solver (line 12) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.45s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0b58451671b5d7efccd7c24faecbe296ca37af4351757d12316e3f81158db311", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b58451671b5d7efccd7c24faecbe296ca37af4351757d12316e3f81158db311", kill_on_drop: false }`
[INFO] [stdout] 0b58451671b5d7efccd7c24faecbe296ca37af4351757d12316e3f81158db311