[INFO] fetching crate meta_diff 0.0.1...
[INFO] checking meta_diff-0.0.1 against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] extracting crate meta_diff 0.0.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate meta_diff 0.0.1 on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate meta_diff 0.0.1
[INFO] finished tweaking crates.io crate meta_diff 0.0.1
[INFO] tweaked toml for crates.io crate meta_diff 0.0.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3a83d3819ce1d2adc6cda08e474b224a8f5d764d944ac27c90325ea0ac1d1fb
[INFO] running `Command { std: "docker" "start" "-a" "a3a83d3819ce1d2adc6cda08e474b224a8f5d764d944ac27c90325ea0ac1d1fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3a83d3819ce1d2adc6cda08e474b224a8f5d764d944ac27c90325ea0ac1d1fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3a83d3819ce1d2adc6cda08e474b224a8f5d764d944ac27c90325ea0ac1d1fb", kill_on_drop: false }`
[INFO] [stdout] a3a83d3819ce1d2adc6cda08e474b224a8f5d764d944ac27c90325ea0ac1d1fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6397d361f5f89a34cf5bf4adb55d420a2cb25624c0011bea19dfca199763dfa2
[INFO] running `Command { std: "docker" "start" "-a" "6397d361f5f89a34cf5bf4adb55d420a2cb25624c0011bea19dfca199763dfa2", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking docopt v1.1.1
[INFO] [stderr]     Checking meta_diff v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `decode` found for struct `Docopt` in the current scope
[INFO] [stdout]   --> src/main.rs:24:61
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let args: Args = docopt::Docopt::new(USAGE).and_then(|d| d.decode()).unwrap_or_else(|e| e.exit());
[INFO] [stdout]    |                                                                ^^^^^^ method not found in `Docopt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `decode` found for struct `Docopt` in the current scope
[INFO] [stdout]   --> src/main.rs:24:61
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let args: Args = docopt::Docopt::new(USAGE).and_then(|d| d.decode()).unwrap_or_else(|e| e.exit());
[INFO] [stdout]    |                                                                ^^^^^^ method not found in `Docopt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `meta_diff` (bin "diff" test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `meta_diff` (bin "diff") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "6397d361f5f89a34cf5bf4adb55d420a2cb25624c0011bea19dfca199763dfa2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6397d361f5f89a34cf5bf4adb55d420a2cb25624c0011bea19dfca199763dfa2", kill_on_drop: false }`
[INFO] [stdout] 6397d361f5f89a34cf5bf4adb55d420a2cb25624c0011bea19dfca199763dfa2