[INFO] cloning repository https://github.com/gamanicoercion/eq_solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gamanicoercion/eq_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgamanicoercion%2Feq_solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgamanicoercion%2Feq_solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d78d85e9579cf1560315faf796113919b3c4098e
[INFO] checking gamanicoercion/eq_solver against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgamanicoercion%2Feq_solver" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gamanicoercion/eq_solver on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gamanicoercion/eq_solver
[INFO] finished tweaking git repo https://github.com/gamanicoercion/eq_solver
[INFO] tweaked toml for git repo https://github.com/gamanicoercion/eq_solver written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gamanicoercion/eq_solver 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.71
[INFO] [stderr]   Downloaded roots v0.0.8
[INFO] [stderr]   Downloaded thiserror-impl v1.0.51
[INFO] [stderr]   Downloaded thiserror v1.0.51
[INFO] [stderr]   Downloaded terminfo v0.8.0
[INFO] [stderr]   Downloaded clearscreen v2.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fad8986a7812a4ce9a35a41db89fbe8b4ade976273ecc7db10282e7a9dd87dd5
[INFO] running `Command { std: "docker" "start" "-a" "fad8986a7812a4ce9a35a41db89fbe8b4ade976273ecc7db10282e7a9dd87dd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fad8986a7812a4ce9a35a41db89fbe8b4ade976273ecc7db10282e7a9dd87dd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fad8986a7812a4ce9a35a41db89fbe8b4ade976273ecc7db10282e7a9dd87dd5", kill_on_drop: false }`
[INFO] [stdout] fad8986a7812a4ce9a35a41db89fbe8b4ade976273ecc7db10282e7a9dd87dd5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8e520aaee0968148c833d95d01b42a144efc51905d1e437a16ae2774fb89d43
[INFO] running `Command { std: "docker" "start" "-a" "f8e520aaee0968148c833d95d01b42a144efc51905d1e437a16ae2774fb89d43", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling proc-macro2 v1.0.71
[INFO] [stderr]    Compiling rustix v0.38.28
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking linux-raw-sys v0.4.12
[INFO] [stderr]    Compiling thiserror v1.0.51
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking home v0.5.9
[INFO] [stderr]     Checking roots v0.0.8
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]    Compiling terminfo v0.8.0
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.42
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking which v4.4.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.51
[INFO] [stderr]     Checking clearscreen v2.0.1
[INFO] [stderr]     Checking eq_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `clearscreen` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clearscreen;
[INFO] [stdout]   |     ^^^^^^^^^^^ the item `clearscreen` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `clearscreen` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clearscreen;
[INFO] [stdout]   |     ^^^^^^^^^^^ the item `clearscreen` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.50s
[INFO] running `Command { std: "docker" "inspect" "f8e520aaee0968148c833d95d01b42a144efc51905d1e437a16ae2774fb89d43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8e520aaee0968148c833d95d01b42a144efc51905d1e437a16ae2774fb89d43", kill_on_drop: false }`
[INFO] [stdout] f8e520aaee0968148c833d95d01b42a144efc51905d1e437a16ae2774fb89d43
[INFO] checking gamanicoercion/eq_solver against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgamanicoercion%2Feq_solver" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gamanicoercion/eq_solver on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gamanicoercion/eq_solver
[INFO] finished tweaking git repo https://github.com/gamanicoercion/eq_solver
[INFO] tweaked toml for git repo https://github.com/gamanicoercion/eq_solver written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/gamanicoercion/eq_solver 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91fee43b5f507bfa759010d23187648c7dce6bb591be9a5ffefe1c18a5a5c875
[INFO] running `Command { std: "docker" "start" "-a" "91fee43b5f507bfa759010d23187648c7dce6bb591be9a5ffefe1c18a5a5c875", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91fee43b5f507bfa759010d23187648c7dce6bb591be9a5ffefe1c18a5a5c875", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91fee43b5f507bfa759010d23187648c7dce6bb591be9a5ffefe1c18a5a5c875", kill_on_drop: false }`
[INFO] [stdout] 91fee43b5f507bfa759010d23187648c7dce6bb591be9a5ffefe1c18a5a5c875
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7377e841fdd041facbc1ec5956383a13b75ecea0a54671c7f9e65c20a4fadec8
[INFO] running `Command { std: "docker" "start" "-a" "7377e841fdd041facbc1ec5956383a13b75ecea0a54671c7f9e65c20a4fadec8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling proc-macro2 v1.0.71
[INFO] [stderr]     Checking siphasher v0.3.11
[INFO] [stderr]    Compiling rustix v0.38.28
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking linux-raw-sys v0.4.12
[INFO] [stderr]    Compiling thiserror v1.0.51
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking home v0.5.9
[INFO] [stderr]     Checking roots v0.0.8
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling phf_codegen v0.11.2
[INFO] [stderr]     Checking phf_shared v0.11.2
[INFO] [stderr]    Compiling terminfo v0.8.0
[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.42
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking nix v0.26.4
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking which v4.4.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.51
[INFO] [stderr]     Checking clearscreen v2.0.1
[INFO] [stderr]     Checking eq_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `clearscreen` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clearscreen;
[INFO] [stdout]   |     ^^^^^^^^^^^ the item `clearscreen` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `clearscreen` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clearscreen;
[INFO] [stdout]   |     ^^^^^^^^^^^ the item `clearscreen` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/main.rs:98:9
[INFO] [stdout]     |
[INFO] [stdout] 98  | /         match &*option.trim() {
[INFO] [stdout] 99  | |             "1" => {
[INFO] [stdout] 100 | |                 clearscreen::clear().expect("failed to clear screen");
[INFO] [stdout] 101 | |                 println!("Chosen: Linear Equation");
[INFO] [stdout] ...   |
[INFO] [stdout] 122 | |             }
[INFO] [stdout] 123 | |         };
[INFO] [stdout]     | |_________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/main.rs:98:9
[INFO] [stdout]     |
[INFO] [stdout] 98  | /         match &*option.trim() {
[INFO] [stdout] 99  | |             "1" => {
[INFO] [stdout] 100 | |                 clearscreen::clear().expect("failed to clear screen");
[INFO] [stdout] 101 | |                 println!("Chosen: Linear Equation");
[INFO] [stdout] ...   |
[INFO] [stdout] 122 | |             }
[INFO] [stdout] 123 | |         };
[INFO] [stdout]     | |_________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `eq_solver` (bin "eq_solver") due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `eq_solver` (bin "eq_solver" test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "7377e841fdd041facbc1ec5956383a13b75ecea0a54671c7f9e65c20a4fadec8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7377e841fdd041facbc1ec5956383a13b75ecea0a54671c7f9e65c20a4fadec8", kill_on_drop: false }`
[INFO] [stdout] 7377e841fdd041facbc1ec5956383a13b75ecea0a54671c7f9e65c20a4fadec8