[INFO] fetching crate fast_ode 1.0.0...
[INFO] testing fast_ode-1.0.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate fast_ode 1.0.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate fast_ode 1.0.0
[INFO] finished tweaking crates.io crate fast_ode 1.0.0
[INFO] tweaked toml for crates.io crate fast_ode 1.0.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fast_ode 1.0.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 29 packages to latest compatible versions
[INFO] [stderr]       Adding mathru v0.15.5 (available: v0.16.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lambert_w v1.2.28
[INFO] [stderr]   Downloaded thread-tree v0.3.3
[INFO] [stderr]   Downloaded mathru v0.15.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5469411f4965672946ae94d39ba77070a77af366ba87de93c58a0676f6feee34
[INFO] running `Command { std: "docker" "start" "-a" "5469411f4965672946ae94d39ba77070a77af366ba87de93c58a0676f6feee34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5469411f4965672946ae94d39ba77070a77af366ba87de93c58a0676f6feee34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5469411f4965672946ae94d39ba77070a77af366ba87de93c58a0676f6feee34", kill_on_drop: false }`
[INFO] [stdout] 5469411f4965672946ae94d39ba77070a77af366ba87de93c58a0676f6feee34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0995347e06bf540d4e8e9ad1008c0d8570ea61800c374e5ccec8bc0ae710c3f5
[INFO] running `Command { std: "docker" "start" "-a" "0995347e06bf540d4e8e9ad1008c0d8570ea61800c374e5ccec8bc0ae710c3f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling float_next_after v1.0.0
[INFO] [stderr]    Compiling fast_ode v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `dormand_prince_logging`
[INFO] [stdout]   --> src/lib.rs:85:7
[INFO] [stdout]    |
[INFO] [stdout] 85 | #[cfg(dormand_prince_logging)]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^ help: found config with similar value: `feature = "dormand_prince_logging"`
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(dormand_prince_logging)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(dormand_prince_logging)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `dormand_prince_logging`
[INFO] [stdout]   --> src/lib.rs:89:7
[INFO] [stdout]    |
[INFO] [stdout] 89 | #[cfg(dormand_prince_logging)]
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^ help: found config with similar value: `feature = "dormand_prince_logging"`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(dormand_prince_logging)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(dormand_prince_logging)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `dormand_prince_logging`
[INFO] [stdout]   --> src/lib.rs:98:11
[INFO] [stdout]    |
[INFO] [stdout] 98 | #[cfg(not(dormand_prince_logging))]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^ help: found config with similar value: `feature = "dormand_prince_logging"`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(dormand_prince_logging)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(dormand_prince_logging)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `dormand_prince_logging`
[INFO] [stdout]    --> src/lib.rs:102:11
[INFO] [stdout]     |
[INFO] [stdout] 102 | #[cfg(not(dormand_prince_logging))]
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^ help: found config with similar value: `feature = "dormand_prince_logging"`
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(dormand_prince_logging)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(dormand_prince_logging)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fast_ode` (lib) due to 1 previous error; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0995347e06bf540d4e8e9ad1008c0d8570ea61800c374e5ccec8bc0ae710c3f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0995347e06bf540d4e8e9ad1008c0d8570ea61800c374e5ccec8bc0ae710c3f5", kill_on_drop: false }`
[INFO] [stdout] 0995347e06bf540d4e8e9ad1008c0d8570ea61800c374e5ccec8bc0ae710c3f5