[INFO] cloning repository https://github.com/satanson/rust_etudes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/satanson/rust_etudes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsatanson%2Frust_etudes", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsatanson%2Frust_etudes'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0501fe82134be8ab3428a96b7818367e4bb95d77
[INFO] checking satanson/rust_etudes against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsatanson%2Frust_etudes" "/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/satanson/rust_etudes on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/satanson/rust_etudes
[INFO] finished tweaking git repo https://github.com/satanson/rust_etudes
[INFO] tweaked toml for git repo https://github.com/satanson/rust_etudes written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/satanson/rust_etudes 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8ecc836486ed606aadc4a72289a2118ff49877eb0e10b765b5b28ab3516c01b
[INFO] running `Command { std: "docker" "start" "-a" "d8ecc836486ed606aadc4a72289a2118ff49877eb0e10b765b5b28ab3516c01b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8ecc836486ed606aadc4a72289a2118ff49877eb0e10b765b5b28ab3516c01b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8ecc836486ed606aadc4a72289a2118ff49877eb0e10b765b5b28ab3516c01b", kill_on_drop: false }`
[INFO] [stdout] d8ecc836486ed606aadc4a72289a2118ff49877eb0e10b765b5b28ab3516c01b
[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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6dfd868f9564fdc68ed73404b2902b5e10c32518472534dd6231b70442083fb
[INFO] running `Command { std: "docker" "start" "-a" "e6dfd868f9564fdc68ed73404b2902b5e10c32518472534dd6231b70442083fb", kill_on_drop: false }`
[INFO] [stderr]     Checking common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stderr]    Compiling my_proc_macro v1.0.0 (/opt/rustwide/workdir/my_proc_macro)
[INFO] [stderr]     Checking etudes v0.1.0 (/opt/rustwide/workdir/etudes)
[INFO] [stderr]     Checking n017_Letter_Combinations_of_a_Phone_Number v0.1.0 (/opt/rustwide/workdir/n017_Letter_Combinations_of_a_Phone_Number)
[INFO] [stderr]     Checking n032_Longest_Valid_Parentheses v0.1.0 (/opt/rustwide/workdir/n032_Longest_Valid_Parentheses)
[INFO] [stderr]     Checking n039_Combination_Sum v0.1.0 (/opt/rustwide/workdir/n039_Combination_Sum)
[INFO] [stderr]     Checking Reverse_Integer v0.1.0 (/opt/rustwide/workdir/Reverse_Integer)
[INFO] [stderr]     Checking n029_Divide_Two_Integers v0.1.0 (/opt/rustwide/workdir/n029_Divide_Two_Integers)
[INFO] [stderr]     Checking n042_Trapping_Rain_Water v0.1.0 (/opt/rustwide/workdir/n042_Trapping_Rain_Water)
[INFO] [stderr]     Checking n016_3Sum_Closest v0.1.0 (/opt/rustwide/workdir/n016_3Sum_Closest)
[INFO] [stderr]     Checking n030_Substring_with_Concatenation_of_All_Words v0.1.0 (/opt/rustwide/workdir/n030_Substring_with_Concatenation_of_All_Words)
[INFO] [stderr]     Checking n038_Count_and_Say v0.1.0 (/opt/rustwide/workdir/n038_Count_and_Say)
[INFO] [stderr]     Checking n043_Multiply_Strings v0.1.0 (/opt/rustwide/workdir/n043_Multiply_Strings)
[INFO] [stderr]     Checking n028_Implement_strStr v0.1.0 (/opt/rustwide/workdir/n028_Implement_strStr)
[INFO] [stderr]     Checking n018_4Sum v0.1.0 (/opt/rustwide/workdir/n018_4Sum)
[INFO] [stderr]     Checking n031_Next_Permutation v0.1.0 (/opt/rustwide/workdir/n031_Next_Permutation)
[INFO] [stderr]     Checking n035_Search_Insert_Position v0.1.0 (/opt/rustwide/workdir/n035_Search_Insert_Position)
[INFO] [stderr]     Checking n033_Search_in_Rotated_Sorted_Array v0.1.0 (/opt/rustwide/workdir/n033_Search_in_Rotated_Sorted_Array)
[INFO] [stderr]     Checking n026_Remove_Duplicates_from_Sorted_Array v0.1.0 (/opt/rustwide/workdir/n026_Remove_Duplicates_from_Sorted_Array)
[INFO] [stderr]     Checking n013_Roman_to_Integer v0.1.0 (/opt/rustwide/workdir/n013_Roman_to_Integer)
[INFO] [stderr]     Checking Median_of_Two_Sorted_Arrays v0.1.0 (/opt/rustwide/workdir/Median_of_Two_Sorted_Arrays)
[INFO] [stderr]     Checking add_two_numbers v0.1.0 (/opt/rustwide/workdir/add_two_numbers)
[INFO] [stderr]     Checking ZigZag_Conversion v0.1.0 (/opt/rustwide/workdir/ZigZag_Conversion)
[INFO] [stderr]     Checking n027_Remove_Element v0.1.0 (/opt/rustwide/workdir/n027_Remove_Element)
[INFO] [stderr]     Checking n051_N_Queens v0.1.0 (/opt/rustwide/workdir/n051_N_Queens)
[INFO] [stderr]     Checking n019_Remove_Nth_Node_From_End_of_List v0.1.0 (/opt/rustwide/workdir/n019_Remove_Nth_Node_From_End_of_List)
[INFO] [stderr]     Checking n021_Merge_Two_Sorted_Lists v0.1.0 (/opt/rustwide/workdir/n021_Merge_Two_Sorted_Lists)
[INFO] [stderr]     Checking n024_Swap_Nodes_in_Pairs v0.1.0 (/opt/rustwide/workdir/n024_Swap_Nodes_in_Pairs)
[INFO] [stderr]     Checking n036_Valid_Sudoku v0.1.0 (/opt/rustwide/workdir/n036_Valid_Sudoku)
[INFO] [stderr]     Checking n023_Merge_k_Sorted_Lists v0.1.0 (/opt/rustwide/workdir/n023_Merge_k_Sorted_Lists)
[INFO] [stderr]     Checking n025_Reverse_Nodes_in_k_Group v0.1.0 (/opt/rustwide/workdir/n025_Reverse_Nodes_in_k_Group)
[INFO] [stdout] error[E0412]: cannot find type `Pair` in this scope
[INFO] [stdout]  --> n051_N_Queens/src/main.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 |   alternatives: Vec<Pair>
[INFO] [stdout]   |                     ^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: you might be missing a type parameter
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct StkElm<Pair> {
[INFO] [stdout]   |              ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking n037_Sudoku_Solver v0.1.0 (/opt/rustwide/workdir/n037_Sudoku_Solver)
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `n051_N_Queens` (bin "n051_N_Queens") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e6dfd868f9564fdc68ed73404b2902b5e10c32518472534dd6231b70442083fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6dfd868f9564fdc68ed73404b2902b5e10c32518472534dd6231b70442083fb", kill_on_drop: false }`
[INFO] [stdout] e6dfd868f9564fdc68ed73404b2902b5e10c32518472534dd6231b70442083fb