[INFO] fetching crate lp-modeler 0.5.0...
[INFO] checking lp-modeler-0.5.0 against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] extracting crate lp-modeler 0.5.0 into /workspace/builds/worker-87/source
[INFO] validating manifest of crates.io crate lp-modeler 0.5.0 on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lp-modeler 0.5.0
[INFO] finished tweaking crates.io crate lp-modeler 0.5.0
[INFO] tweaked toml for crates.io crate lp-modeler 0.5.0 written to /workspace/builds/worker-87/source/Cargo.toml
[INFO] crate crates.io crate lp-modeler 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded coin_cbc_sys v0.1.0
[INFO] [stderr]   Downloaded sprs v0.7.1
[INFO] [stderr]   Downloaded coin_cbc v0.1.3
[INFO] [stderr]   Downloaded minilp v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 433aff956013460d2885879336f45b6d4236bdb2d9d27b36b54f0e41a957d015
[INFO] running `Command { std: "docker" "start" "-a" "433aff956013460d2885879336f45b6d4236bdb2d9d27b36b54f0e41a957d015", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "433aff956013460d2885879336f45b6d4236bdb2d9d27b36b54f0e41a957d015", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "433aff956013460d2885879336f45b6d4236bdb2d9d27b36b54f0e41a957d015", kill_on_drop: false }`
[INFO] [stdout] 433aff956013460d2885879336f45b6d4236bdb2d9d27b36b54f0e41a957d015
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35144482f0f065d4e3c610500b921c8299356198fb1432ed66ac5de3f64b00ca
[INFO] running `Command { std: "docker" "start" "-a" "35144482f0f065d4e3c610500b921c8299356198fb1432ed66ac5de3f64b00ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking lp-modeler v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `EmptyExpr`
[INFO] [stdout]    --> src/dsl/variables.rs:174:5
[INFO] [stdout]     |
[INFO] [stdout] 174 |     EmptyExpr,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/solvers/mod.rs:105:42
[INFO] [stdout]     |
[INFO] [stdout] 105 |         assert!( is_zero( f-(i as f32)), format!("Value {} cannot be interpreted as integer.", f) );
[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] 105 -         assert!( is_zero( f-(i as f32)), format!("Value {} cannot be interpreted as integer.", f) );
[INFO] [stdout] 105 +         assert!( is_zero( f-(i as f32)), "Value {} cannot be interpreted as integer.", f );
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/solvers/mod.rs:105:42
[INFO] [stdout]     |
[INFO] [stdout] 105 |         assert!( is_zero( f-(i as f32)), format!("Value {} cannot be interpreted as integer.", f) );
[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] 105 -         assert!( is_zero( f-(i as f32)), format!("Value {} cannot be interpreted as integer.", f) );
[INFO] [stdout] 105 +         assert!( is_zero( f-(i as f32)), "Value {} cannot be interpreted as integer.", f );
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> examples/assignment.rs:64:29
[INFO] [stdout]    |
[INFO] [stdout] 64 |     assert!(result.is_ok(), result.unwrap_err());
[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] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 64 |     assert!(result.is_ok(), "{}", result.unwrap_err());
[INFO] [stdout]    |                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/problems.rs:79:41
[INFO] [stdout]    |
[INFO] [stdout] 79 |         assert!(output1.contains(expr), format!("{} is not present",expr));
[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] 79 -         assert!(output1.contains(expr), format!("{} is not present",expr));
[INFO] [stdout] 79 +         assert!(output1.contains(expr), "{} is not present",expr);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/problems.rs:154:29
[INFO] [stdout]     |
[INFO] [stdout] 154 |     assert!(result.is_ok(), result.unwrap_err());
[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] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 154 |     assert!(result.is_ok(), "{}", result.unwrap_err());
[INFO] [stdout]     |                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.93s
[INFO] running `Command { std: "docker" "inspect" "35144482f0f065d4e3c610500b921c8299356198fb1432ed66ac5de3f64b00ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35144482f0f065d4e3c610500b921c8299356198fb1432ed66ac5de3f64b00ca", kill_on_drop: false }`
[INFO] [stdout] 35144482f0f065d4e3c610500b921c8299356198fb1432ed66ac5de3f64b00ca