[INFO] cloning repository https://github.com/calebowens/virtual-machine-experiment-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/calebowens/virtual-machine-experiment-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcalebowens%2Fvirtual-machine-experiment-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcalebowens%2Fvirtual-machine-experiment-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d9dce5487ca6036de76ec8f393300dc91958c590
[INFO] checking calebowens/virtual-machine-experiment-rust against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcalebowens%2Fvirtual-machine-experiment-rust" "/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/calebowens/virtual-machine-experiment-rust 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/calebowens/virtual-machine-experiment-rust
[INFO] finished tweaking git repo https://github.com/calebowens/virtual-machine-experiment-rust
[INFO] tweaked toml for git repo https://github.com/calebowens/virtual-machine-experiment-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/calebowens/virtual-machine-experiment-rust 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] 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] 96de5bbf1dd0aa7b6ddbc716f3df26280758391be3cd546eb9ae071a3b3d3015
[INFO] running `Command { std: "docker" "start" "-a" "96de5bbf1dd0aa7b6ddbc716f3df26280758391be3cd546eb9ae071a3b3d3015", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96de5bbf1dd0aa7b6ddbc716f3df26280758391be3cd546eb9ae071a3b3d3015", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96de5bbf1dd0aa7b6ddbc716f3df26280758391be3cd546eb9ae071a3b3d3015", kill_on_drop: false }`
[INFO] [stdout] 96de5bbf1dd0aa7b6ddbc716f3df26280758391be3cd546eb9ae071a3b3d3015
[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] fcd743bb70ec77839b2d81447a2aaf9e293a0c450a417484f7b146dd6e3cf48b
[INFO] running `Command { std: "docker" "start" "-a" "fcd743bb70ec77839b2d81447a2aaf9e293a0c450a417484f7b146dd6e3cf48b", kill_on_drop: false }`
[INFO] [stderr]     Checking vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "fcd743bb70ec77839b2d81447a2aaf9e293a0c450a417484f7b146dd6e3cf48b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcd743bb70ec77839b2d81447a2aaf9e293a0c450a417484f7b146dd6e3cf48b", kill_on_drop: false }`
[INFO] [stdout] fcd743bb70ec77839b2d81447a2aaf9e293a0c450a417484f7b146dd6e3cf48b
[INFO] checking calebowens/virtual-machine-experiment-rust against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcalebowens%2Fvirtual-machine-experiment-rust" "/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/calebowens/virtual-machine-experiment-rust 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/calebowens/virtual-machine-experiment-rust
[INFO] finished tweaking git repo https://github.com/calebowens/virtual-machine-experiment-rust
[INFO] tweaked toml for git repo https://github.com/calebowens/virtual-machine-experiment-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/calebowens/virtual-machine-experiment-rust 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] c814874b1dd2100e2d10eb9d5f9b4672577ba0c17cad96dd8b22fbf44c02a850
[INFO] running `Command { std: "docker" "start" "-a" "c814874b1dd2100e2d10eb9d5f9b4672577ba0c17cad96dd8b22fbf44c02a850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c814874b1dd2100e2d10eb9d5f9b4672577ba0c17cad96dd8b22fbf44c02a850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c814874b1dd2100e2d10eb9d5f9b4672577ba0c17cad96dd8b22fbf44c02a850", kill_on_drop: false }`
[INFO] [stdout] c814874b1dd2100e2d10eb9d5f9b4672577ba0c17cad96dd8b22fbf44c02a850
[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] 2e3466c0b33c451d373b2280742c408d6fbc6844f423072979cfe50bd246a5f3
[INFO] running `Command { std: "docker" "start" "-a" "2e3466c0b33c451d373b2280742c408d6fbc6844f423072979cfe50bd246a5f3", kill_on_drop: false }`
[INFO] [stderr]     Checking vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/numeric.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 | /         match self {
[INFO] [stdout] 146 | |             Numeric::UInt8(a)   => { return cast!(to, a); },
[INFO] [stdout] 147 | |             Numeric::UInt16(a)  => { return cast!(to, a); },
[INFO] [stdout] 148 | |             Numeric::UInt32(a)  => { return cast!(to, a); },
[INFO] [stdout] ...   |
[INFO] [stdout] 159 | |             Numeric::ISize(a)   => { return cast!(to, a); },
[INFO] [stdout] 160 | |         };
[INFO] [stdout]     | |_________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/numeric.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 | /         match self {
[INFO] [stdout] 146 | |             Numeric::UInt8(a)   => { return cast!(to, a); },
[INFO] [stdout] 147 | |             Numeric::UInt16(a)  => { return cast!(to, a); },
[INFO] [stdout] 148 | |             Numeric::UInt32(a)  => { return cast!(to, a); },
[INFO] [stdout] ...   |
[INFO] [stdout] 159 | |             Numeric::ISize(a)   => { return cast!(to, a); },
[INFO] [stdout] 160 | |         };
[INFO] [stdout]     | |_________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vm` (bin "vm" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vm` (bin "vm") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "2e3466c0b33c451d373b2280742c408d6fbc6844f423072979cfe50bd246a5f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e3466c0b33c451d373b2280742c408d6fbc6844f423072979cfe50bd246a5f3", kill_on_drop: false }`
[INFO] [stdout] 2e3466c0b33c451d373b2280742c408d6fbc6844f423072979cfe50bd246a5f3