[INFO] fetching crate serde-gron 0.1.2...
[INFO] checking serde-gron-0.1.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate serde-gron 0.1.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate serde-gron 0.1.2 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 crates.io crate serde-gron 0.1.2
[INFO] finished tweaking crates.io crate serde-gron 0.1.2
[INFO] tweaked toml for crates.io crate serde-gron 0.1.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate serde-gron 0.1.2 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bool_ext v0.5.1
[INFO] [stderr]   Downloaded serde_test v1.0.144
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 704b4fa82b393e2aa82dc3c8cf2a7bb865a38d03ce30bf6a55d9379d448d34fb
[INFO] running `Command { std: "docker" "start" "-a" "704b4fa82b393e2aa82dc3c8cf2a7bb865a38d03ce30bf6a55d9379d448d34fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "704b4fa82b393e2aa82dc3c8cf2a7bb865a38d03ce30bf6a55d9379d448d34fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "704b4fa82b393e2aa82dc3c8cf2a7bb865a38d03ce30bf6a55d9379d448d34fb", kill_on_drop: false }`
[INFO] [stdout] 704b4fa82b393e2aa82dc3c8cf2a7bb865a38d03ce30bf6a55d9379d448d34fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 416827471ae6da025a4db22b0b766bde2c3f96c459770c55313c5c51321ec412
[INFO] running `Command { std: "docker" "start" "-a" "416827471ae6da025a4db22b0b766bde2c3f96c459770c55313c5c51321ec412", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]    Compiling serde_test v1.0.144
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking once_cell v1.13.1
[INFO] [stderr]     Checking bool_ext v0.5.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking num-complex v0.4.2
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.32
[INFO] [stderr]     Checking thiserror v1.0.32
[INFO] [stderr]     Checking serde-gron v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.29s
[INFO] running `Command { std: "docker" "inspect" "416827471ae6da025a4db22b0b766bde2c3f96c459770c55313c5c51321ec412", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "416827471ae6da025a4db22b0b766bde2c3f96c459770c55313c5c51321ec412", kill_on_drop: false }`
[INFO] [stdout] 416827471ae6da025a4db22b0b766bde2c3f96c459770c55313c5c51321ec412
[INFO] checking serde-gron-0.1.2 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate serde-gron 0.1.2 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate serde-gron 0.1.2 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 crates.io crate serde-gron 0.1.2
[INFO] finished tweaking crates.io crate serde-gron 0.1.2
[INFO] tweaked toml for crates.io crate serde-gron 0.1.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate serde-gron 0.1.2 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] de36214e3ce3bc1594302971b4bb91ca7326a877a01599d5bb3a482e0b3071f6
[INFO] running `Command { std: "docker" "start" "-a" "de36214e3ce3bc1594302971b4bb91ca7326a877a01599d5bb3a482e0b3071f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de36214e3ce3bc1594302971b4bb91ca7326a877a01599d5bb3a482e0b3071f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de36214e3ce3bc1594302971b4bb91ca7326a877a01599d5bb3a482e0b3071f6", kill_on_drop: false }`
[INFO] [stdout] de36214e3ce3bc1594302971b4bb91ca7326a877a01599d5bb3a482e0b3071f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] a3be001e86505705639253120ed6b148becc99248f2157e1eb28c04962423f09
[INFO] running `Command { std: "docker" "start" "-a" "a3be001e86505705639253120ed6b148becc99248f2157e1eb28c04962423f09", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling serde_test v1.0.144
[INFO] [stderr]     Checking bool_ext v0.5.1
[INFO] [stderr]     Checking once_cell v1.13.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking num-complex v0.4.2
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.32
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking thiserror v1.0.32
[INFO] [stderr]     Checking serde-gron v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.60s
[INFO] running `Command { std: "docker" "inspect" "a3be001e86505705639253120ed6b148becc99248f2157e1eb28c04962423f09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3be001e86505705639253120ed6b148becc99248f2157e1eb28c04962423f09", kill_on_drop: false }`
[INFO] [stdout] a3be001e86505705639253120ed6b148becc99248f2157e1eb28c04962423f09