[INFO] cloning repository https://github.com/vojtech-petrak/Draw
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vojtech-petrak/Draw" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvojtech-petrak%2FDraw", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvojtech-petrak%2FDraw'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74d38b2fc35c27f249bd07699b244f2d6c204f86
[INFO] checking vojtech-petrak/Draw against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvojtech-petrak%2FDraw" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vojtech-petrak/Draw on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vojtech-petrak/Draw
[INFO] finished tweaking git repo https://github.com/vojtech-petrak/Draw
[INFO] tweaked toml for git repo https://github.com/vojtech-petrak/Draw written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/vojtech-petrak/Draw 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0b5ef5c5e92bcdd8368f70b268e1ec66dca7a45f26e450d7ae91d946410b405
[INFO] running `Command { std: "docker" "start" "-a" "c0b5ef5c5e92bcdd8368f70b268e1ec66dca7a45f26e450d7ae91d946410b405", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0b5ef5c5e92bcdd8368f70b268e1ec66dca7a45f26e450d7ae91d946410b405", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0b5ef5c5e92bcdd8368f70b268e1ec66dca7a45f26e450d7ae91d946410b405", kill_on_drop: false }`
[INFO] [stdout] c0b5ef5c5e92bcdd8368f70b268e1ec66dca7a45f26e450d7ae91d946410b405
[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=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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b99ac85651cd953305615b08f1623e49b2af16016ad0ee13e70d9094c76e6b18
[INFO] running `Command { std: "docker" "start" "-a" "b99ac85651cd953305615b08f1623e49b2af16016ad0ee13e70d9094c76e6b18", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling signal-hook v0.3.15
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.6
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.26.1
[INFO] [stderr]     Checking draw v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]  --> src/canvas.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{stdout, Write, Error, prelude::*, ErrorKind, Seek, SeekFrom},
[INFO] [stdout]   |                  ^^^^^         ---------- the item `Write` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]  --> src/canvas.rs:3:55
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{stdout, Write, Error, prelude::*, ErrorKind, Seek, SeekFrom},
[INFO] [stdout]   |                                ----------             ^^^^
[INFO] [stdout]   |                                |
[INFO] [stdout]   |                                the item `Seek` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]  --> src/canvas.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{stdout, Write, Error, prelude::*, ErrorKind, Seek, SeekFrom},
[INFO] [stdout]   |                  ^^^^^         ---------- the item `Write` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]  --> src/canvas.rs:3:55
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{stdout, Write, Error, prelude::*, ErrorKind, Seek, SeekFrom},
[INFO] [stdout]   |                                ----------             ^^^^
[INFO] [stdout]   |                                |
[INFO] [stdout]   |                                the item `Seek` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.40s
[INFO] running `Command { std: "docker" "inspect" "b99ac85651cd953305615b08f1623e49b2af16016ad0ee13e70d9094c76e6b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b99ac85651cd953305615b08f1623e49b2af16016ad0ee13e70d9094c76e6b18", kill_on_drop: false }`
[INFO] [stdout] b99ac85651cd953305615b08f1623e49b2af16016ad0ee13e70d9094c76e6b18
[INFO] checking vojtech-petrak/Draw against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvojtech-petrak%2FDraw" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vojtech-petrak/Draw on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vojtech-petrak/Draw
[INFO] finished tweaking git repo https://github.com/vojtech-petrak/Draw
[INFO] tweaked toml for git repo https://github.com/vojtech-petrak/Draw written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/vojtech-petrak/Draw 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e79ba9855e19fec00373ca65f2e710caa7fd36c217d2259b0e151ef3be11bc0
[INFO] running `Command { std: "docker" "start" "-a" "3e79ba9855e19fec00373ca65f2e710caa7fd36c217d2259b0e151ef3be11bc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e79ba9855e19fec00373ca65f2e710caa7fd36c217d2259b0e151ef3be11bc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e79ba9855e19fec00373ca65f2e710caa7fd36c217d2259b0e151ef3be11bc0", kill_on_drop: false }`
[INFO] [stdout] 3e79ba9855e19fec00373ca65f2e710caa7fd36c217d2259b0e151ef3be11bc0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6750e4a80779c597c04238e4cad33a58df677b839a61a6f3155de402326cf3cd
[INFO] running `Command { std: "docker" "start" "-a" "6750e4a80779c597c04238e4cad33a58df677b839a61a6f3155de402326cf3cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling signal-hook v0.3.15
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.6
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.26.1
[INFO] [stderr]     Checking draw v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]  --> src/canvas.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{stdout, Write, Error, prelude::*, ErrorKind, Seek, SeekFrom},
[INFO] [stdout]   |                  ^^^^^         ---------- the item `Write` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]  --> src/canvas.rs:3:55
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{stdout, Write, Error, prelude::*, ErrorKind, Seek, SeekFrom},
[INFO] [stdout]   |                                ----------             ^^^^
[INFO] [stdout]   |                                |
[INFO] [stdout]   |                                the item `Seek` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]  --> src/canvas.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{stdout, Write, Error, prelude::*, ErrorKind, Seek, SeekFrom},
[INFO] [stdout]   |                  ^^^^^         ---------- the item `Write` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]  --> src/canvas.rs:3:55
[INFO] [stdout]   |
[INFO] [stdout] 3 |     io::{stdout, Write, Error, prelude::*, ErrorKind, Seek, SeekFrom},
[INFO] [stdout]   |                                ----------             ^^^^
[INFO] [stdout]   |                                |
[INFO] [stdout]   |                                the item `Seek` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.42s
[INFO] running `Command { std: "docker" "inspect" "6750e4a80779c597c04238e4cad33a58df677b839a61a6f3155de402326cf3cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6750e4a80779c597c04238e4cad33a58df677b839a61a6f3155de402326cf3cd", kill_on_drop: false }`
[INFO] [stdout] 6750e4a80779c597c04238e4cad33a58df677b839a61a6f3155de402326cf3cd