[INFO] fetching crate heckcheck 2.0.1...
[INFO] testing heckcheck-2.0.1 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate heckcheck 2.0.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate heckcheck 2.0.1
[INFO] finished tweaking crates.io crate heckcheck 2.0.1
[INFO] tweaked toml for crates.io crate heckcheck 2.0.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate heckcheck 2.0.1 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.13.1 (available: v0.22.1)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e7f43fd3597d1b9d846b19bfa5ee093b5558c3167103d02bde640f95e04b7eb
[INFO] running `Command { std: "docker" "start" "-a" "4e7f43fd3597d1b9d846b19bfa5ee093b5558c3167103d02bde640f95e04b7eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e7f43fd3597d1b9d846b19bfa5ee093b5558c3167103d02bde640f95e04b7eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e7f43fd3597d1b9d846b19bfa5ee093b5558c3167103d02bde640f95e04b7eb", kill_on_drop: false }`
[INFO] [stdout] 4e7f43fd3597d1b9d846b19bfa5ee093b5558c3167103d02bde640f95e04b7eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 441f08ca07902af5e40dfdc529078ef86c8b671a081d0bf65317700325a563f5
[INFO] running `Command { std: "docker" "start" "-a" "441f08ca07902af5e40dfdc529078ef86c8b671a081d0bf65317700325a563f5", kill_on_drop: false }`
[INFO] [stderr]    Compiling derive_arbitrary v1.4.2
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling arbitrary v1.4.2
[INFO] [stderr]    Compiling heckcheck v2.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ZeroShrinker` is never constructed
[INFO] [stdout]   --> src/shrinker.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct ZeroShrinker {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `find_next_index_to_zeroify` is never used
[INFO] [stdout]   --> src/shrinker.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl ZeroShrinker {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 45 |     /// Find the next index to alter, skipping indices that already contain zeroes.
[INFO] [stdout] 46 |     fn find_next_index_to_zeroify(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.17s
[INFO] running `Command { std: "docker" "inspect" "441f08ca07902af5e40dfdc529078ef86c8b671a081d0bf65317700325a563f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "441f08ca07902af5e40dfdc529078ef86c8b671a081d0bf65317700325a563f5", kill_on_drop: false }`
[INFO] [stdout] 441f08ca07902af5e40dfdc529078ef86c8b671a081d0bf65317700325a563f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 837d7e64bdb92ed7eb6c723ea82b8bd6fe91778e725c68e9b96c1340d409305c
[INFO] running `Command { std: "docker" "start" "-a" "837d7e64bdb92ed7eb6c723ea82b8bd6fe91778e725c68e9b96c1340d409305c", kill_on_drop: false }`
[INFO] [stderr]    Compiling heckcheck v2.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ZeroShrinker` is never constructed
[INFO] [stdout]   --> src/shrinker.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct ZeroShrinker {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `find_next_index_to_zeroify` is never used
[INFO] [stdout]   --> src/shrinker.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl ZeroShrinker {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 45 |     /// Find the next index to alter, skipping indices that already contain zeroes.
[INFO] [stdout] 46 |     fn find_next_index_to_zeroify(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ZeroShrinker` is never constructed
[INFO] [stdout]   --> src/shrinker.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct ZeroShrinker {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `find_next_index_to_zeroify` is never used
[INFO] [stdout]   --> src/shrinker.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl ZeroShrinker {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 45 |     /// Find the next index to alter, skipping indices that already contain zeroes.
[INFO] [stdout] 46 |     fn find_next_index_to_zeroify(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `Command { std: "docker" "inspect" "837d7e64bdb92ed7eb6c723ea82b8bd6fe91778e725c68e9b96c1340d409305c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "837d7e64bdb92ed7eb6c723ea82b8bd6fe91778e725c68e9b96c1340d409305c", kill_on_drop: false }`
[INFO] [stdout] 837d7e64bdb92ed7eb6c723ea82b8bd6fe91778e725c68e9b96c1340d409305c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 124ab2fdfaab1add768f271efe51f096225450e4b37d03f7d8e354f43ba28145
[INFO] running `Command { std: "docker" "start" "-a" "124ab2fdfaab1add768f271efe51f096225450e4b37d03f7d8e354f43ba28145", kill_on_drop: false }`
[INFO] [stderr] warning: struct `ZeroShrinker` is never constructed
[INFO] [stderr]   --> src/shrinker.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | struct ZeroShrinker {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `find_next_index_to_zeroify` is never used
[INFO] [stderr]   --> src/shrinker.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 44 | impl ZeroShrinker {
[INFO] [stderr]    | ----------------- method in this implementation
[INFO] [stderr] 45 |     /// Find the next index to alter, skipping indices that already contain zeroes.
[INFO] [stderr] 46 |     fn find_next_index_to_zeroify(&mut self) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `heckcheck` (lib) generated 2 warnings
[INFO] [stderr] warning: `heckcheck` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/heckcheck-49734c8ee45bbeeb)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running tests/test.rs (/opt/rustwide/target/debug/deps/test-4fe38813cf3aea5f)
[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 2 tests
[INFO] [stdout] test smoke ... ok
[INFO] [stdout] test panics_on_bug - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests heckcheck
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - (line 82) ... ok
[INFO] [stdout] test src/lib.rs - (line 17) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.62s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "124ab2fdfaab1add768f271efe51f096225450e4b37d03f7d8e354f43ba28145", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "124ab2fdfaab1add768f271efe51f096225450e4b37d03f7d8e354f43ba28145", kill_on_drop: false }`
[INFO] [stdout] 124ab2fdfaab1add768f271efe51f096225450e4b37d03f7d8e354f43ba28145