[INFO] cloning repository https://github.com/MikeWalrus/qwerty
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MikeWalrus/qwerty" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMikeWalrus%2Fqwerty", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMikeWalrus%2Fqwerty'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dd802048922c044b9324fea384c45b20a3ec608c
[INFO] checking MikeWalrus/qwerty against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMikeWalrus%2Fqwerty" "/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/MikeWalrus/qwerty 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/MikeWalrus/qwerty
[INFO] finished tweaking git repo https://github.com/MikeWalrus/qwerty
[INFO] tweaked toml for git repo https://github.com/MikeWalrus/qwerty written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/MikeWalrus/qwerty 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded anyhow v1.0.55
[INFO] [stderr]   Downloaded ctrlc v3.2.1
[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] bab845b06974fd09a97cbeaac277d3839e3847bb42d4c2954b31b6de0ec54a58
[INFO] running `Command { std: "docker" "start" "-a" "bab845b06974fd09a97cbeaac277d3839e3847bb42d4c2954b31b6de0ec54a58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bab845b06974fd09a97cbeaac277d3839e3847bb42d4c2954b31b6de0ec54a58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bab845b06974fd09a97cbeaac277d3839e3847bb42d4c2954b31b6de0ec54a58", kill_on_drop: false }`
[INFO] [stdout] bab845b06974fd09a97cbeaac277d3839e3847bb42d4c2954b31b6de0ec54a58
[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] 44c3eae1c9dd6a3c79aad9e6af22ef929500d2f589bbd1de917e32bbef77bd43
[INFO] running `Command { std: "docker" "start" "-a" "44c3eae1c9dd6a3c79aad9e6af22ef929500d2f589bbd1de917e32bbef77bd43", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling anyhow v1.0.55
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking ctrlc v3.2.1
[INFO] [stderr]     Checking qwerty v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `unix_socket_abstract` has been stable since 1.70.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(unix_socket_abstract)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `unix_socket_abstract` has been stable since 1.70.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(unix_socket_abstract)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.74s
[INFO] running `Command { std: "docker" "inspect" "44c3eae1c9dd6a3c79aad9e6af22ef929500d2f589bbd1de917e32bbef77bd43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44c3eae1c9dd6a3c79aad9e6af22ef929500d2f589bbd1de917e32bbef77bd43", kill_on_drop: false }`
[INFO] [stdout] 44c3eae1c9dd6a3c79aad9e6af22ef929500d2f589bbd1de917e32bbef77bd43
[INFO] checking MikeWalrus/qwerty against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMikeWalrus%2Fqwerty" "/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/MikeWalrus/qwerty 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/MikeWalrus/qwerty
[INFO] finished tweaking git repo https://github.com/MikeWalrus/qwerty
[INFO] tweaked toml for git repo https://github.com/MikeWalrus/qwerty written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/MikeWalrus/qwerty 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] 32364bb02cf0d25d7267886da6e60ba757b6cb2d0a442efef42da73d15bd9311
[INFO] running `Command { std: "docker" "start" "-a" "32364bb02cf0d25d7267886da6e60ba757b6cb2d0a442efef42da73d15bd9311", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32364bb02cf0d25d7267886da6e60ba757b6cb2d0a442efef42da73d15bd9311", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32364bb02cf0d25d7267886da6e60ba757b6cb2d0a442efef42da73d15bd9311", kill_on_drop: false }`
[INFO] [stdout] 32364bb02cf0d25d7267886da6e60ba757b6cb2d0a442efef42da73d15bd9311
[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] 62133ace29afaf2d06c0f45fb1f08391b30b0a0a13deb50d2322b53f129d847a
[INFO] running `Command { std: "docker" "start" "-a" "62133ace29afaf2d06c0f45fb1f08391b30b0a0a13deb50d2322b53f129d847a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling anyhow v1.0.55
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking ctrlc v3.2.1
[INFO] [stderr]     Checking qwerty v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `unix_socket_abstract` has been stable since 1.70.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(unix_socket_abstract)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `unix_socket_abstract` has been stable since 1.70.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(unix_socket_abstract)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.09s
[INFO] running `Command { std: "docker" "inspect" "62133ace29afaf2d06c0f45fb1f08391b30b0a0a13deb50d2322b53f129d847a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62133ace29afaf2d06c0f45fb1f08391b30b0a0a13deb50d2322b53f129d847a", kill_on_drop: false }`
[INFO] [stdout] 62133ace29afaf2d06c0f45fb1f08391b30b0a0a13deb50d2322b53f129d847a