[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] documenting satanson/rust_etudes against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsatanson%2Frust_etudes" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/satanson/rust_etudes on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-7/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: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a4d741e418b0b3d20229afaed482d81b475a456db974b3bb91afe4f64b628191
[INFO] running `Command { std: "docker" "start" "-a" "a4d741e418b0b3d20229afaed482d81b475a456db974b3bb91afe4f64b628191", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4d741e418b0b3d20229afaed482d81b475a456db974b3bb91afe4f64b628191", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4d741e418b0b3d20229afaed482d81b475a456db974b3bb91afe4f64b628191", kill_on_drop: false }`
[INFO] [stdout] a4d741e418b0b3d20229afaed482d81b475a456db974b3bb91afe4f64b628191
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1347a1910b98326c649e7932c08e33ff7421892ff1a89445b0723f7a2604687
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c1347a1910b98326c649e7932c08e33ff7421892ff1a89445b0723f7a2604687", 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]  Documenting n015_3Sum v0.1.0 (/opt/rustwide/workdir/n015_3Sum)
[INFO] [stderr]  Documenting n022_Generate_Parentheses v0.1.0 (/opt/rustwide/workdir/n022_Generate_Parentheses)
[INFO] [stderr]  Documenting n018_4Sum v0.1.0 (/opt/rustwide/workdir/n018_4Sum)
[INFO] [stderr]  Documenting n045_Jump_Game_II v0.1.0 (/opt/rustwide/workdir/n045_Jump_Game_II)
[INFO] [stderr]  Documenting n013_Roman_to_Integer v0.1.0 (/opt/rustwide/workdir/n013_Roman_to_Integer)
[INFO] [stderr]  Documenting etudes v0.1.0 (/opt/rustwide/workdir/etudes)
[INFO] [stderr]  Documenting n012_Integer_to_Roman v0.1.0 (/opt/rustwide/workdir/n012_Integer_to_Roman)
[INFO] [stderr]  Documenting n040_Combination_Sum_II v0.1.0 (/opt/rustwide/workdir/n040_Combination_Sum_II)
[INFO] [stderr]  Documenting two_sum v0.1.0 (/opt/rustwide/workdir/two_sum)
[INFO] [stderr]  Documenting Reverse_Integer v0.1.0 (/opt/rustwide/workdir/Reverse_Integer)
[INFO] [stderr]  Documenting conditional_compiling v0.1.0 (/opt/rustwide/workdir/conditional_compiling)
[INFO] [stderr]  Documenting Longest_Palindromic_Substring v0.1.0 (/opt/rustwide/workdir/Longest_Palindromic_Substring)
[INFO] [stderr]  Documenting n049_Group_Anagrams v0.1.0 (/opt/rustwide/workdir/n049_Group_Anagrams)
[INFO] [stderr]  Documenting n046_Permutations v0.1.0 (/opt/rustwide/workdir/n046_Permutations)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> n046_Permutations/src/main.rs:39:18
[INFO] [stdout]    |
[INFO] [stdout] 39 |         xs[i] %= (i+1);
[INFO] [stdout]    |                  ^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> common/src/lib.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 |         '1'...'9' => {
[INFO] [stdout]    |            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting n039_Combination_Sum v0.1.0 (/opt/rustwide/workdir/n039_Combination_Sum)
[INFO] [stderr]  Documenting n033_Search_in_Rotated_Sorted_Array v0.1.0 (/opt/rustwide/workdir/n033_Search_in_Rotated_Sorted_Array)
[INFO] [stderr]  Documenting Regular_Expression_Matching v0.1.0 (/opt/rustwide/workdir/Regular_Expression_Matching)
[INFO] [stderr]  Documenting n047_Permutations_II v0.1.0 (/opt/rustwide/workdir/n047_Permutations_II)
[INFO] [stderr]  Documenting n020_Valid_Parentheses v0.1.0 (/opt/rustwide/workdir/n020_Valid_Parentheses)
[INFO] [stderr]  Documenting add_two_numbers v0.1.0 (/opt/rustwide/workdir/add_two_numbers)
[INFO] [stderr]  Documenting n050_Pow_x_n v0.1.0 (/opt/rustwide/workdir/n050_Pow_x_n)
[INFO] [stderr]  Documenting n016_3Sum_Closest v0.1.0 (/opt/rustwide/workdir/n016_3Sum_Closest)
[INFO] [stderr]  Documenting String_to_Integer v0.1.0 (/opt/rustwide/workdir/String_to_Integer)
[INFO] [stderr]  Documenting n041_First_Missing_Positive v0.1.0 (/opt/rustwide/workdir/n041_First_Missing_Positive)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting n048_Rotate_Image v0.1.0 (/opt/rustwide/workdir/n048_Rotate_Image)
[INFO] [stderr]  Documenting n038_Count_and_Say v0.1.0 (/opt/rustwide/workdir/n038_Count_and_Say)
[INFO] [stderr]  Documenting common v0.1.0 (/opt/rustwide/workdir/common)
[INFO] [stderr]  Documenting n027_Remove_Element v0.1.0 (/opt/rustwide/workdir/n027_Remove_Element)
[INFO] [stderr]  Documenting n043_Multiply_Strings v0.1.0 (/opt/rustwide/workdir/n043_Multiply_Strings)
[INFO] [stderr]  Documenting n026_Remove_Duplicates_from_Sorted_Array v0.1.0 (/opt/rustwide/workdir/n026_Remove_Duplicates_from_Sorted_Array)
[INFO] [stderr]  Documenting n051_N_Queens v0.1.0 (/opt/rustwide/workdir/n051_N_Queens)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> common/src/lib.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 |         '1'...'9' => {
[INFO] [stdout]    |            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting my_proc_macro v1.0.0 (/opt/rustwide/workdir/my_proc_macro)
[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] 4 | struct StkElm {
[INFO] [stdout]   |              - help: you might be missing a type parameter: `<Pair>`
[INFO] [stdout] 5 |   pos: Pos,
[INFO] [stdout] 6 |   alternatives: Vec<Pair>
[INFO] [stdout]   |                     ^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `n051_N_Queens`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name n051_N_Queens n051_N_Queens/src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c1347a1910b98326c649e7932c08e33ff7421892ff1a89445b0723f7a2604687", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1347a1910b98326c649e7932c08e33ff7421892ff1a89445b0723f7a2604687", kill_on_drop: false }`
[INFO] [stdout] c1347a1910b98326c649e7932c08e33ff7421892ff1a89445b0723f7a2604687
