[INFO] cloning repository https://github.com/danvk/rusty-boggle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/danvk/rusty-boggle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanvk%2Frusty-boggle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanvk%2Frusty-boggle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47f91bf1d06ff9abf743daac1a7dcebd4bdd226e
[INFO] testing danvk/rusty-boggle against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanvk%2Frusty-boggle" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/danvk/rusty-boggle on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/danvk/rusty-boggle
[INFO] finished tweaking git repo https://github.com/danvk/rusty-boggle
[INFO] tweaked toml for git repo https://github.com/danvk/rusty-boggle written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/danvk/rusty-boggle already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c74a72381239abbc3049ea9a30ea8aa6d6ecd83f58ac981658f51a4b1e996148
[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" "c74a72381239abbc3049ea9a30ea8aa6d6ecd83f58ac981658f51a4b1e996148", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c74a72381239abbc3049ea9a30ea8aa6d6ecd83f58ac981658f51a4b1e996148", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c74a72381239abbc3049ea9a30ea8aa6d6ecd83f58ac981658f51a4b1e996148", kill_on_drop: false }`
[INFO] [stdout] c74a72381239abbc3049ea9a30ea8aa6d6ecd83f58ac981658f51a4b1e996148
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c22341f4714e62fa494a7346b2040affc2fcf0f4b88fddae685b93fa5246f30
[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" "3c22341f4714e62fa494a7346b2040affc2fcf0f4b88fddae685b93fa5246f30", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusty-boggle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/trie.rs:73:45
[INFO] [stdout]    |
[INFO] [stdout] 73 |             None => panic!("Invalid letter: {i}"),
[INFO] [stdout]    |                                             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 73 |             None => panic!("Invalid letter: {i}", ...),
[INFO] [stdout]    |                                                 +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 73 |             None => panic!("{}", "Invalid letter: {i}"),
[INFO] [stdout]    |                            +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/trie.rs:85:45
[INFO] [stdout]    |
[INFO] [stdout] 85 |             None => panic!("Invalid letter: {i}"),
[INFO] [stdout]    |                                             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 85 |             None => panic!("Invalid letter: {i}", ...),
[INFO] [stdout]    |                                                 +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 85 |             None => panic!("{}", "Invalid letter: {i}"),
[INFO] [stdout]    |                            +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.79s
[INFO] running `Command { std: "docker" "inspect" "3c22341f4714e62fa494a7346b2040affc2fcf0f4b88fddae685b93fa5246f30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c22341f4714e62fa494a7346b2040affc2fcf0f4b88fddae685b93fa5246f30", kill_on_drop: false }`
[INFO] [stdout] 3c22341f4714e62fa494a7346b2040affc2fcf0f4b88fddae685b93fa5246f30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", 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] 1749081cda53168a39b0cdc2704b06a5b54a31db481e43a913e192499dea4fe2
[INFO] running `Command { std: "docker" "start" "-a" "1749081cda53168a39b0cdc2704b06a5b54a31db481e43a913e192499dea4fe2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusty-boggle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/trie.rs:73:45
[INFO] [stdout]    |
[INFO] [stdout] 73 |             None => panic!("Invalid letter: {i}"),
[INFO] [stdout]    |                                             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 73 |             None => panic!("Invalid letter: {i}", ...),
[INFO] [stdout]    |                                                 +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 73 |             None => panic!("{}", "Invalid letter: {i}"),
[INFO] [stdout]    |                            +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/trie.rs:85:45
[INFO] [stdout]    |
[INFO] [stdout] 85 |             None => panic!("Invalid letter: {i}"),
[INFO] [stdout]    |                                             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 85 |             None => panic!("Invalid letter: {i}", ...),
[INFO] [stdout]    |                                                 +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 85 |             None => panic!("{}", "Invalid letter: {i}"),
[INFO] [stdout]    |                            +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/trie.rs:73:45
[INFO] [stdout]    |
[INFO] [stdout] 73 |             None => panic!("Invalid letter: {i}"),
[INFO] [stdout]    |                                             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 73 |             None => panic!("Invalid letter: {i}", ...),
[INFO] [stdout]    |                                                 +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 73 |             None => panic!("{}", "Invalid letter: {i}"),
[INFO] [stdout]    |                            +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/trie.rs:85:45
[INFO] [stdout]    |
[INFO] [stdout] 85 |             None => panic!("Invalid letter: {i}"),
[INFO] [stdout]    |                                             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 85 |             None => panic!("Invalid letter: {i}", ...),
[INFO] [stdout]    |                                                 +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 85 |             None => panic!("{}", "Invalid letter: {i}"),
[INFO] [stdout]    |                            +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.77s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/rusty_boggle-cddebcdeb46578e2)
[INFO] [stderr]   Executable unittests src/bin/perf_test.rs (/opt/rustwide/target/debug/deps/perf_test-5c9a723dfbbf308d)
[INFO] [stderr]   Executable unittests src/bin/solve.rs (/opt/rustwide/target/debug/deps/solve-9da459c881e0879f)
[INFO] running `Command { std: "docker" "inspect" "1749081cda53168a39b0cdc2704b06a5b54a31db481e43a913e192499dea4fe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1749081cda53168a39b0cdc2704b06a5b54a31db481e43a913e192499dea4fe2", kill_on_drop: false }`
[INFO] [stdout] 1749081cda53168a39b0cdc2704b06a5b54a31db481e43a913e192499dea4fe2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", 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] ac252a89d7b820e20be668e2d8636646c4f72f33fed3b78493743b74928e6e2c
[INFO] running `Command { std: "docker" "start" "-a" "ac252a89d7b820e20be668e2d8636646c4f72f33fed3b78493743b74928e6e2c", kill_on_drop: false }`
[INFO] [stderr] warning: panic message contains an unused formatting placeholder
[INFO] [stderr]   --> src/trie.rs:73:45
[INFO] [stderr]    |
[INFO] [stderr] 73 |             None => panic!("Invalid letter: {i}"),
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stderr] help: add the missing argument
[INFO] [stderr]    |
[INFO] [stderr] 73 |             None => panic!("Invalid letter: {i}", ...),
[INFO] [stderr]    |                                                 +++++
[INFO] [stderr] help: or add a "{}" format string to use the message literally
[INFO] [stderr]    |
[INFO] [stderr] 73 |             None => panic!("{}", "Invalid letter: {i}"),
[INFO] [stderr]    |                            +++++
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains an unused formatting placeholder
[INFO] [stderr]   --> src/trie.rs:85:45
[INFO] [stderr]    |
[INFO] [stderr] 85 |             None => panic!("Invalid letter: {i}"),
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stderr] help: add the missing argument
[INFO] [stderr]    |
[INFO] [stderr] 85 |             None => panic!("Invalid letter: {i}", ...),
[INFO] [stderr]    |                                                 +++++
[INFO] [stderr] help: or add a "{}" format string to use the message literally
[INFO] [stderr]    |
[INFO] [stderr] 85 |             None => panic!("{}", "Invalid letter: {i}"),
[INFO] [stderr]    |                            +++++
[INFO] [stderr] 
[INFO] [stderr] warning: `rusty-boggle` (lib) generated 2 warnings
[INFO] [stderr] warning: `rusty-boggle` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rusty_boggle-cddebcdeb46578e2)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test boggler::tests::test_bogglify_word ... ok
[INFO] [stdout] test trie::tests::test_marks ... ok
[INFO] [stdout] test trie::tests::test_reverse_lookup ... ok
[INFO] [stdout] test trie::tests::test_shallow_trie ... ok
[INFO] [stdout] test boggler::tests::test_is_boggle_word ... ok
[INFO] [stdout] test boggler::tests::test_parse_and_display ... ok
[INFO] [stdout] test trie::tests::test_add_words ... ok
[INFO] [stdout] test boggler::tests::test_set_cell ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/perf_test.rs (/opt/rustwide/target/debug/deps/perf_test-5c9a723dfbbf308d)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/solve.rs (/opt/rustwide/target/debug/deps/solve-9da459c881e0879f)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests rusty-boggle
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ac252a89d7b820e20be668e2d8636646c4f72f33fed3b78493743b74928e6e2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac252a89d7b820e20be668e2d8636646c4f72f33fed3b78493743b74928e6e2c", kill_on_drop: false }`
[INFO] [stdout] ac252a89d7b820e20be668e2d8636646c4f72f33fed3b78493743b74928e6e2c