[INFO] cloning repository https://github.com/cbreeden/math833_project [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cbreeden/math833_project" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcbreeden%2Fmath833_project", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcbreeden%2Fmath833_project'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] b651e86b4695f2883ac61eb246719128584a3258 [INFO] checking cbreeden/math833_project against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcbreeden%2Fmath833_project" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/cbreeden/math833_project 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/cbreeden/math833_project [INFO] finished tweaking git repo https://github.com/cbreeden/math833_project [INFO] tweaked toml for git repo https://github.com/cbreeden/math833_project written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/cbreeden/math833_project 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] Downloading crates ... [INFO] [stderr] Downloaded gnuplot v0.0.22 [INFO] [stderr] Downloaded statrs v0.6.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] fec7ed7375abf34d86f6f4ada5086c313a46c540a0b3fe40d16a7df2ba96b260 [INFO] running `Command { std: "docker" "start" "-a" "fec7ed7375abf34d86f6f4ada5086c313a46c540a0b3fe40d16a7df2ba96b260", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fec7ed7375abf34d86f6f4ada5086c313a46c540a0b3fe40d16a7df2ba96b260", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fec7ed7375abf34d86f6f4ada5086c313a46c540a0b3fe40d16a7df2ba96b260", kill_on_drop: false }` [INFO] [stdout] fec7ed7375abf34d86f6f4ada5086c313a46c540a0b3fe40d16a7df2ba96b260 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 32d3efec80ec1ca8b9c2cd0d64f6db649bfcd240a55cd2a5fe95e826b7c55b9f [INFO] running `Command { std: "docker" "start" "-a" "32d3efec80ec1ca8b9c2cd0d64f6db649bfcd240a55cd2a5fe95e826b7c55b9f", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.22 [INFO] [stderr] Checking gnuplot v0.0.22 [INFO] [stderr] Checking rand v0.3.15 [INFO] [stderr] Checking statrs v0.6.0 [INFO] [stderr] Checking project v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/markov2011.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/markov2014.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/markov2011.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Axis` [INFO] [stdout] --> src/markov2011.rs:124:62 [INFO] [stdout] | [INFO] [stdout] 124 | use gnuplot::{Figure, Caption, Color, AutoOption, Graph, Axis}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/markov2014.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.66s [INFO] running `Command { std: "docker" "inspect" "32d3efec80ec1ca8b9c2cd0d64f6db649bfcd240a55cd2a5fe95e826b7c55b9f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "32d3efec80ec1ca8b9c2cd0d64f6db649bfcd240a55cd2a5fe95e826b7c55b9f", kill_on_drop: false }` [INFO] [stdout] 32d3efec80ec1ca8b9c2cd0d64f6db649bfcd240a55cd2a5fe95e826b7c55b9f [INFO] checking cbreeden/math833_project against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcbreeden%2Fmath833_project" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/cbreeden/math833_project 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/cbreeden/math833_project [INFO] finished tweaking git repo https://github.com/cbreeden/math833_project [INFO] tweaked toml for git repo https://github.com/cbreeden/math833_project written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/cbreeden/math833_project 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 1825b034802df88d1ee2c07c109db7cddaf4e18a55684ea228c08aef96b8708c [INFO] running `Command { std: "docker" "start" "-a" "1825b034802df88d1ee2c07c109db7cddaf4e18a55684ea228c08aef96b8708c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1825b034802df88d1ee2c07c109db7cddaf4e18a55684ea228c08aef96b8708c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1825b034802df88d1ee2c07c109db7cddaf4e18a55684ea228c08aef96b8708c", kill_on_drop: false }` [INFO] [stdout] 1825b034802df88d1ee2c07c109db7cddaf4e18a55684ea228c08aef96b8708c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9a7d0b0a64927281241a259a56b1d702260b9821f1edc0b2d8b43252bf8357be [INFO] running `Command { std: "docker" "start" "-a" "9a7d0b0a64927281241a259a56b1d702260b9821f1edc0b2d8b43252bf8357be", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.22 [INFO] [stderr] Checking gnuplot v0.0.22 [INFO] [stderr] Checking rand v0.3.15 [INFO] [stderr] Checking statrs v0.6.0 [INFO] [stderr] Checking project v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/markov2011.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/markov2014.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/markov2011.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Axis` [INFO] [stdout] --> src/markov2011.rs:124:62 [INFO] [stdout] | [INFO] [stdout] 124 | use gnuplot::{Figure, Caption, Color, AutoOption, Graph, Axis}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/markov2014.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/main.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> src/markov2011.rs:103:17 [INFO] [stdout] | [INFO] [stdout] 103 | panic!(); [INFO] [stdout] | ^^^^^^^^ cannot infer type [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> src/markov2011.rs:103:17 [INFO] [stdout] | [INFO] [stdout] 103 | panic!(); [INFO] [stdout] | ^^^^^^^^ cannot infer type [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 2 warnings 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 `project` (bin "project") due to 2 previous errors; 2 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: aborting due to 1 previous error; 3 warnings 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 `project` (bin "project" test) due to 2 previous errors; 3 warnings emitted [INFO] running `Command { std: "docker" "inspect" "9a7d0b0a64927281241a259a56b1d702260b9821f1edc0b2d8b43252bf8357be", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9a7d0b0a64927281241a259a56b1d702260b9821f1edc0b2d8b43252bf8357be", kill_on_drop: false }` [INFO] [stdout] 9a7d0b0a64927281241a259a56b1d702260b9821f1edc0b2d8b43252bf8357be