[INFO] cloning repository https://github.com/Chengchcc/maze-wasm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Chengchcc/maze-wasm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChengchcc%2Fmaze-wasm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChengchcc%2Fmaze-wasm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c360adb43f69c1fe8708ca895bfd3317d2f126ae
[INFO] checking Chengchcc/maze-wasm against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChengchcc%2Fmaze-wasm" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Chengchcc/maze-wasm 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 git repo https://github.com/Chengchcc/maze-wasm
[INFO] finished tweaking git repo https://github.com/Chengchcc/maze-wasm
[INFO] tweaked toml for git repo https://github.com/Chengchcc/maze-wasm written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Chengchcc/maze-wasm 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]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.69
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.69
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.69
[INFO] [stderr]   Downloaded wasi v0.10.1+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded getrandom v0.2.1
[INFO] [stderr]   Downloaded rand_core v0.6.1
[INFO] [stderr]   Downloaded rand v0.8.2
[INFO] [stderr]   Downloaded futures v0.1.30
[INFO] [stderr]   Downloaded web-sys v0.3.46
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.69
[INFO] [stderr]   Downloaded js-sys v0.3.46
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.69
[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] c1e3b65502e927926e50fedcf6c73a9f35adda5206d25601ef366cf560efdf6c
[INFO] running `Command { std: "docker" "start" "-a" "c1e3b65502e927926e50fedcf6c73a9f35adda5206d25601ef366cf560efdf6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1e3b65502e927926e50fedcf6c73a9f35adda5206d25601ef366cf560efdf6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1e3b65502e927926e50fedcf6c73a9f35adda5206d25601ef366cf560efdf6c", kill_on_drop: false }`
[INFO] [stdout] c1e3b65502e927926e50fedcf6c73a9f35adda5206d25601ef366cf560efdf6c
[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] 03edeb5fbfaa3fdcd28c26313ebde5d225cbec56eca4fc45e326b2c1b2b46af6
[INFO] running `Command { std: "docker" "start" "-a" "03edeb5fbfaa3fdcd28c26313ebde5d225cbec56eca4fc45e326b2c1b2b46af6", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.69
[INFO] [stderr]    Compiling serde_derive v1.0.119
[INFO] [stderr]    Compiling serde v1.0.119
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling wasm-bindgen v0.2.69
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking futures v0.1.30
[INFO] [stderr]     Checking array_tool v1.0.3
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.69
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.69
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.69
[INFO] [stderr]     Checking js-sys v0.3.46
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking web-sys v0.3.46
[INFO] [stderr]     Checking wasm-bindgen-futures v0.3.27
[INFO] [stderr]     Checking wasm-bindgen-test v0.2.50
[INFO] [stderr]     Checking maze-wasm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `unionFind::UnionFind`
[INFO] [stdout]  --> src/maze/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use unionFind::UnionFind;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `unionFind::UnionFind`
[INFO] [stdout]  --> src/maze/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use unionFind::UnionFind;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.13s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.69
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "03edeb5fbfaa3fdcd28c26313ebde5d225cbec56eca4fc45e326b2c1b2b46af6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03edeb5fbfaa3fdcd28c26313ebde5d225cbec56eca4fc45e326b2c1b2b46af6", kill_on_drop: false }`
[INFO] [stdout] 03edeb5fbfaa3fdcd28c26313ebde5d225cbec56eca4fc45e326b2c1b2b46af6
[INFO] checking Chengchcc/maze-wasm against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChengchcc%2Fmaze-wasm" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Chengchcc/maze-wasm on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Chengchcc/maze-wasm
[INFO] finished tweaking git repo https://github.com/Chengchcc/maze-wasm
[INFO] tweaked toml for git repo https://github.com/Chengchcc/maze-wasm written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Chengchcc/maze-wasm 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2820a6d4c06712f9766d2866202bc6d0d3489eb4a6b1738d15609f4f70461e6b
[INFO] running `Command { std: "docker" "start" "-a" "2820a6d4c06712f9766d2866202bc6d0d3489eb4a6b1738d15609f4f70461e6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2820a6d4c06712f9766d2866202bc6d0d3489eb4a6b1738d15609f4f70461e6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2820a6d4c06712f9766d2866202bc6d0d3489eb4a6b1738d15609f4f70461e6b", kill_on_drop: false }`
[INFO] [stdout] 2820a6d4c06712f9766d2866202bc6d0d3489eb4a6b1738d15609f4f70461e6b
[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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c67678750572777412d2826ad236c16ca4182edf3bf448451b52e832ed02caf2
[INFO] running `Command { std: "docker" "start" "-a" "c67678750572777412d2826ad236c16ca4182edf3bf448451b52e832ed02caf2", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.69
[INFO] [stderr]    Compiling serde_derive v1.0.119
[INFO] [stderr]    Compiling serde v1.0.119
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling wasm-bindgen v0.2.69
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking futures v0.1.30
[INFO] [stderr]     Checking array_tool v1.0.3
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.2
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.69
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.69
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.69
[INFO] [stderr]     Checking js-sys v0.3.46
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking wasm-bindgen-futures v0.3.27
[INFO] [stderr]     Checking web-sys v0.3.46
[INFO] [stderr]     Checking wasm-bindgen-test v0.2.50
[INFO] [stderr]     Checking maze-wasm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `unionFind::UnionFind`
[INFO] [stdout]  --> src/maze/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use unionFind::UnionFind;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `unionFind::UnionFind`
[INFO] [stdout]  --> src/maze/mod.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use unionFind::UnionFind;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.22s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.69
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "c67678750572777412d2826ad236c16ca4182edf3bf448451b52e832ed02caf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c67678750572777412d2826ad236c16ca4182edf3bf448451b52e832ed02caf2", kill_on_drop: false }`
[INFO] [stdout] c67678750572777412d2826ad236c16ca4182edf3bf448451b52e832ed02caf2