[INFO] fetching crate rshacker 0.2.1...
[INFO] checking rshacker-0.2.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate rshacker 0.2.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate rshacker 0.2.1 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 rshacker 0.2.1
[INFO] finished tweaking crates.io crate rshacker 0.2.1
[INFO] tweaked toml for crates.io crate rshacker 0.2.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate rshacker 0.2.1 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 spinach v2.1.0
[INFO] [stderr]   Downloaded libc v0.2.127
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b3ab71acddeaa803fee24059495cd88a69ed343b7d794daf6560efdef2b55a12
[INFO] running `Command { std: "docker" "start" "-a" "b3ab71acddeaa803fee24059495cd88a69ed343b7d794daf6560efdef2b55a12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3ab71acddeaa803fee24059495cd88a69ed343b7d794daf6560efdef2b55a12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3ab71acddeaa803fee24059495cd88a69ed343b7d794daf6560efdef2b55a12", kill_on_drop: false }`
[INFO] [stdout] b3ab71acddeaa803fee24059495cd88a69ed343b7d794daf6560efdef2b55a12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9fc5a2d647326579f28c8d7b64b05aa3dda3241ea0da30822f83adf5a57bd5bc
[INFO] running `Command { std: "docker" "start" "-a" "9fc5a2d647326579f28c8d7b64b05aa3dda3241ea0da30822f83adf5a57bd5bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking spinach v2.1.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking console v0.15.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking dns-lookup v1.0.8
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking indicatif v0.17.0
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking rshacker v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.32s
[INFO] running `Command { std: "docker" "inspect" "9fc5a2d647326579f28c8d7b64b05aa3dda3241ea0da30822f83adf5a57bd5bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fc5a2d647326579f28c8d7b64b05aa3dda3241ea0da30822f83adf5a57bd5bc", kill_on_drop: false }`
[INFO] [stdout] 9fc5a2d647326579f28c8d7b64b05aa3dda3241ea0da30822f83adf5a57bd5bc
[INFO] checking rshacker-0.2.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate rshacker 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate rshacker 0.2.1 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 rshacker 0.2.1
[INFO] finished tweaking crates.io crate rshacker 0.2.1
[INFO] tweaked toml for crates.io crate rshacker 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate rshacker 0.2.1 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b10984dc6b460ce9d749d9056f9fad002e8a23c6a75e855180a5ce7c1fe672cc
[INFO] running `Command { std: "docker" "start" "-a" "b10984dc6b460ce9d749d9056f9fad002e8a23c6a75e855180a5ce7c1fe672cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b10984dc6b460ce9d749d9056f9fad002e8a23c6a75e855180a5ce7c1fe672cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b10984dc6b460ce9d749d9056f9fad002e8a23c6a75e855180a5ce7c1fe672cc", kill_on_drop: false }`
[INFO] [stdout] b10984dc6b460ce9d749d9056f9fad002e8a23c6a75e855180a5ce7c1fe672cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a7e46b1225685ad642bcb15f1ebdd11873fab03a962b4e8f5529c94712c26dd1
[INFO] running `Command { std: "docker" "start" "-a" "a7e46b1225685ad642bcb15f1ebdd11873fab03a962b4e8f5529c94712c26dd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking spinach v2.1.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking console v0.15.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking indicatif v0.17.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking dns-lookup v1.0.8
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking rshacker v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.74s
[INFO] running `Command { std: "docker" "inspect" "a7e46b1225685ad642bcb15f1ebdd11873fab03a962b4e8f5529c94712c26dd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7e46b1225685ad642bcb15f1ebdd11873fab03a962b4e8f5529c94712c26dd1", kill_on_drop: false }`
[INFO] [stdout] a7e46b1225685ad642bcb15f1ebdd11873fab03a962b4e8f5529c94712c26dd1