[INFO] fetching crate checkdigit 0.1.0...
[INFO] testing checkdigit-0.1.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate checkdigit 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate checkdigit 0.1.0
[INFO] finished tweaking crates.io crate checkdigit 0.1.0
[INFO] tweaked toml for crates.io crate checkdigit 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate checkdigit 0.1.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 26d988dcdfe94af82b84a7022625e66e7b2a5c403ead03d84aac6a186fffd6d1
[INFO] running `Command { std: "docker" "start" "-a" "26d988dcdfe94af82b84a7022625e66e7b2a5c403ead03d84aac6a186fffd6d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26d988dcdfe94af82b84a7022625e66e7b2a5c403ead03d84aac6a186fffd6d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26d988dcdfe94af82b84a7022625e66e7b2a5c403ead03d84aac6a186fffd6d1", kill_on_drop: false }`
[INFO] [stdout] 26d988dcdfe94af82b84a7022625e66e7b2a5c403ead03d84aac6a186fffd6d1
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e79c534c576eaab475d822f42dbbb14eea802cc97eca772020c8176f2ddddc7
[INFO] running `Command { std: "docker" "start" "-a" "5e79c534c576eaab475d822f42dbbb14eea802cc97eca772020c8176f2ddddc7", kill_on_drop: false }`
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling checkdigit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "5e79c534c576eaab475d822f42dbbb14eea802cc97eca772020c8176f2ddddc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e79c534c576eaab475d822f42dbbb14eea802cc97eca772020c8176f2ddddc7", kill_on_drop: false }`
[INFO] [stdout] 5e79c534c576eaab475d822f42dbbb14eea802cc97eca772020c8176f2ddddc7
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10ddf04a740173d91b2d3bd7a8dc1835bb9fc2da708fbdb6d1b3e89be9afd4aa
[INFO] running `Command { std: "docker" "start" "-a" "10ddf04a740173d91b2d3bd7a8dc1835bb9fc2da708fbdb6d1b3e89be9afd4aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling checkdigit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/util/charmap.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         CharMap::<u8>::from("0123405");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let _ = CharMap::<u8>::from("0123405");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `Command { std: "docker" "inspect" "10ddf04a740173d91b2d3bd7a8dc1835bb9fc2da708fbdb6d1b3e89be9afd4aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10ddf04a740173d91b2d3bd7a8dc1835bb9fc2da708fbdb6d1b3e89be9afd4aa", kill_on_drop: false }`
[INFO] [stdout] 10ddf04a740173d91b2d3bd7a8dc1835bb9fc2da708fbdb6d1b3e89be9afd4aa
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c9b534fdfe293259ab43e5a14469711558f5a829671517e02cc2b0ba9a9961fb
[INFO] running `Command { std: "docker" "start" "-a" "c9b534fdfe293259ab43e5a14469711558f5a829671517e02cc2b0ba9a9961fb", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `from` that must be used
[INFO] [stderr]    --> src/util/charmap.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 |         CharMap::<u8>::from("0123405");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 130 |         let _ = CharMap::<u8>::from("0123405");
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `checkdigit` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/checkdigit-12d7881e7f000e85)
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test util::charmap::tests::convert_chars_lossy ... ok
[INFO] [stdout] test util::charmap::tests::convert_nums ... ok
[INFO] [stdout] test util::charmap::tests::convert_chars ... ok
[INFO] [stdout] test util::charmap::tests::with_numset ... ok
[INFO] [stdout] test util::tests::build_protected_apend ... ok
[INFO] [stdout] test util::tests::split_protected_tail_n ... ok
[INFO] [stdout] test util::charmap::tests::from_str ... ok
[INFO] [stdout] test util::charmap::tests::from_str_duplicate - should panic ... ok
[INFO] [stdout] test util::charmap::tests::convert_nums_unknown - should panic ... ok
[INFO] [stdout] test util::charmap::tests::with_numset_different_lengths - should panic ... ok
[INFO] [stdout] test util::charmap::tests::with_numset_duplicate_num - should panic ... ok
[INFO] [stdout] test util::charmap::tests::with_numset_duplicate_char - should panic ... ok
[INFO] [stderr]      Running tests/ref_luhn.rs (/opt/rustwide/target/debug/deps/ref_luhn-deeb7f7f079eb6a1)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests checkdigit
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_ref_luhn ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[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" "c9b534fdfe293259ab43e5a14469711558f5a829671517e02cc2b0ba9a9961fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9b534fdfe293259ab43e5a14469711558f5a829671517e02cc2b0ba9a9961fb", kill_on_drop: false }`
[INFO] [stdout] c9b534fdfe293259ab43e5a14469711558f5a829671517e02cc2b0ba9a9961fb