[INFO] fetching crate chain_reaction 0.2.50...
[INFO] checking chain_reaction-0.2.50 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate chain_reaction 0.2.50 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate chain_reaction 0.2.50 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chain_reaction 0.2.50
[INFO] finished tweaking crates.io crate chain_reaction 0.2.50
[INFO] tweaked toml for crates.io crate chain_reaction 0.2.50 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate chain_reaction 0.2.50 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b97035d26348f47a4291b80539b3722a1684d7461c5ee990221b30707e3cded2
[INFO] running `Command { std: "docker" "start" "-a" "b97035d26348f47a4291b80539b3722a1684d7461c5ee990221b30707e3cded2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b97035d26348f47a4291b80539b3722a1684d7461c5ee990221b30707e3cded2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b97035d26348f47a4291b80539b3722a1684d7461c5ee990221b30707e3cded2", kill_on_drop: false }`
[INFO] [stdout] b97035d26348f47a4291b80539b3722a1684d7461c5ee990221b30707e3cded2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efe71577cf3617a6fd1161aa254fec97350b45ba8f4881690b2a7229cff23625
[INFO] running `Command { std: "docker" "start" "-a" "efe71577cf3617a6fd1161aa254fec97350b45ba8f4881690b2a7229cff23625", kill_on_drop: false }`
[INFO] [stderr]     Checking chain_reaction v0.2.50 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "efe71577cf3617a6fd1161aa254fec97350b45ba8f4881690b2a7229cff23625", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efe71577cf3617a6fd1161aa254fec97350b45ba8f4881690b2a7229cff23625", kill_on_drop: false }`
[INFO] [stdout] efe71577cf3617a6fd1161aa254fec97350b45ba8f4881690b2a7229cff23625
[INFO] checking chain_reaction-0.2.50 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate chain_reaction 0.2.50 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate chain_reaction 0.2.50 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chain_reaction 0.2.50
[INFO] finished tweaking crates.io crate chain_reaction 0.2.50
[INFO] tweaked toml for crates.io crate chain_reaction 0.2.50 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate chain_reaction 0.2.50 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b60cc0cc7b9da568a1f6e5eaa33a2884a2c635c0eb7d85433dd1cc2962591365
[INFO] running `Command { std: "docker" "start" "-a" "b60cc0cc7b9da568a1f6e5eaa33a2884a2c635c0eb7d85433dd1cc2962591365", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b60cc0cc7b9da568a1f6e5eaa33a2884a2c635c0eb7d85433dd1cc2962591365", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b60cc0cc7b9da568a1f6e5eaa33a2884a2c635c0eb7d85433dd1cc2962591365", kill_on_drop: false }`
[INFO] [stdout] b60cc0cc7b9da568a1f6e5eaa33a2884a2c635c0eb7d85433dd1cc2962591365
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf943c2b8d1228211a9aade75a470cc432f1e7825496c326bd998bcd63731a0e
[INFO] running `Command { std: "docker" "start" "-a" "cf943c2b8d1228211a9aade75a470cc432f1e7825496c326bd998bcd63731a0e", kill_on_drop: false }`
[INFO] [stderr]     Checking chain_reaction v0.2.50 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "cf943c2b8d1228211a9aade75a470cc432f1e7825496c326bd998bcd63731a0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf943c2b8d1228211a9aade75a470cc432f1e7825496c326bd998bcd63731a0e", kill_on_drop: false }`
[INFO] [stdout] cf943c2b8d1228211a9aade75a470cc432f1e7825496c326bd998bcd63731a0e