[INFO] cloning repository https://github.com/sha0coder/buffmon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sha0coder/buffmon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsha0coder%2Fbuffmon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsha0coder%2Fbuffmon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74f5414969a2462b91d72f8339de6de1ec6fbd53
[INFO] checking sha0coder/buffmon against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsha0coder%2Fbuffmon" "/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/sha0coder/buffmon 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/sha0coder/buffmon
[INFO] finished tweaking git repo https://github.com/sha0coder/buffmon
[INFO] tweaked toml for git repo https://github.com/sha0coder/buffmon written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sha0coder/buffmon 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] 415f42c70bb5d269fac3a3d55a015f86243c3abc29b92fdf693c59e49d34f097
[INFO] running `Command { std: "docker" "start" "-a" "415f42c70bb5d269fac3a3d55a015f86243c3abc29b92fdf693c59e49d34f097", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "415f42c70bb5d269fac3a3d55a015f86243c3abc29b92fdf693c59e49d34f097", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "415f42c70bb5d269fac3a3d55a015f86243c3abc29b92fdf693c59e49d34f097", kill_on_drop: false }`
[INFO] [stdout] 415f42c70bb5d269fac3a3d55a015f86243c3abc29b92fdf693c59e49d34f097
[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] 3710bbc21eaafb092a877369de710a0b9edef858ed25466b4088f5c985024e8a
[INFO] running `Command { std: "docker" "start" "-a" "3710bbc21eaafb092a877369de710a0b9edef858ed25466b4088f5c985024e8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling windows_x86_64_gnu v0.52.0
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking windows-targets v0.52.0
[INFO] [stderr]     Checking windows-core v0.52.0
[INFO] [stderr]     Checking windows v0.52.0
[INFO] [stderr]     Checking buffmon v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `md5` is imported redundantly
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use md5;
[INFO] [stdout]   |     ^^^ the item `md5` 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 `md5` is imported redundantly
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use md5;
[INFO] [stdout]   |     ^^^ the item `md5` 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 6.47s
[INFO] running `Command { std: "docker" "inspect" "3710bbc21eaafb092a877369de710a0b9edef858ed25466b4088f5c985024e8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3710bbc21eaafb092a877369de710a0b9edef858ed25466b4088f5c985024e8a", kill_on_drop: false }`
[INFO] [stdout] 3710bbc21eaafb092a877369de710a0b9edef858ed25466b4088f5c985024e8a
[INFO] checking sha0coder/buffmon against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsha0coder%2Fbuffmon" "/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/sha0coder/buffmon 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/sha0coder/buffmon
[INFO] finished tweaking git repo https://github.com/sha0coder/buffmon
[INFO] tweaked toml for git repo https://github.com/sha0coder/buffmon written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sha0coder/buffmon 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] 135cd7955bf424a3bdbe367d339b4efd74ec11da7c482b1fe9fbb3b3f9ebd388
[INFO] running `Command { std: "docker" "start" "-a" "135cd7955bf424a3bdbe367d339b4efd74ec11da7c482b1fe9fbb3b3f9ebd388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "135cd7955bf424a3bdbe367d339b4efd74ec11da7c482b1fe9fbb3b3f9ebd388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "135cd7955bf424a3bdbe367d339b4efd74ec11da7c482b1fe9fbb3b3f9ebd388", kill_on_drop: false }`
[INFO] [stdout] 135cd7955bf424a3bdbe367d339b4efd74ec11da7c482b1fe9fbb3b3f9ebd388
[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] dcfb53066d0cdc87de68e8c1725adb8b7727d22683695fe4c872fbb998313e10
[INFO] running `Command { std: "docker" "start" "-a" "dcfb53066d0cdc87de68e8c1725adb8b7727d22683695fe4c872fbb998313e10", kill_on_drop: false }`
[INFO] [stderr]    Compiling windows_x86_64_gnu v0.52.0
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking windows-targets v0.52.0
[INFO] [stderr]     Checking windows-core v0.52.0
[INFO] [stderr]     Checking windows v0.52.0
[INFO] [stderr]     Checking buffmon v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `md5` is imported redundantly
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use md5;
[INFO] [stdout]   |     ^^^ the item `md5` 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 `md5` is imported redundantly
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use md5;
[INFO] [stdout]   |     ^^^ the item `md5` 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 5.82s
[INFO] running `Command { std: "docker" "inspect" "dcfb53066d0cdc87de68e8c1725adb8b7727d22683695fe4c872fbb998313e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcfb53066d0cdc87de68e8c1725adb8b7727d22683695fe4c872fbb998313e10", kill_on_drop: false }`
[INFO] [stdout] dcfb53066d0cdc87de68e8c1725adb8b7727d22683695fe4c872fbb998313e10