[INFO] fetching crate balanced-tree-index 2.3.0...
[INFO] checking balanced-tree-index-2.3.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate balanced-tree-index 2.3.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate balanced-tree-index 2.3.0
[INFO] finished tweaking crates.io crate balanced-tree-index 2.3.0
[INFO] tweaked toml for crates.io crate balanced-tree-index 2.3.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate balanced-tree-index 2.3.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] [stderr]       Adding rand_core v0.6.4 (available: v0.9.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eefb33f237351fe16fcb68fd4c3a454d591a568a69b6b322e10a87ffea4aeb22
[INFO] running `Command { std: "docker" "start" "-a" "eefb33f237351fe16fcb68fd4c3a454d591a568a69b6b322e10a87ffea4aeb22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eefb33f237351fe16fcb68fd4c3a454d591a568a69b6b322e10a87ffea4aeb22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eefb33f237351fe16fcb68fd4c3a454d591a568a69b6b322e10a87ffea4aeb22", kill_on_drop: false }`
[INFO] [stdout] eefb33f237351fe16fcb68fd4c3a454d591a568a69b6b322e10a87ffea4aeb22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7a15bd5f2567f6886833ff1a1fa6b0f2f49bf59f121eec16b74947ee08897b3
[INFO] running `Command { std: "docker" "start" "-a" "a7a15bd5f2567f6886833ff1a1fa6b0f2f49bf59f121eec16b74947ee08897b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking aligned-array v1.0.1
[INFO] [stderr]     Checking aligned-cmov v2.3.0
[INFO] [stderr]     Checking balanced-tree-index v2.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `test_helper`
[INFO] [stdout]    --> src/lib.rs:231:9
[INFO] [stdout]     |
[INFO] [stdout] 231 |         test_helper::run_with_several_seeds(|mut rng| {
[INFO] [stdout]     |         ^^^^^^^^^^^ use of unresolved module or unlinked crate `test_helper`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `test_helper`, use `cargo add test_helper` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `test_helper`
[INFO] [stdout]    --> src/lib.rs:252:9
[INFO] [stdout]     |
[INFO] [stdout] 252 |         test_helper::run_with_several_seeds(|mut rng| {
[INFO] [stdout]     |         ^^^^^^^^^^^ use of unresolved module or unlinked crate `test_helper`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `test_helper`, use `cargo add test_helper` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `test_helper`
[INFO] [stdout]    --> src/lib.rs:441:9
[INFO] [stdout]     |
[INFO] [stdout] 441 |         test_helper::run_with_several_seeds(|mut rng| {
[INFO] [stdout]     |         ^^^^^^^^^^^ use of unresolved module or unlinked crate `test_helper`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `test_helper`, use `cargo add test_helper` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `test_helper`
[INFO] [stdout]    --> src/lib.rs:470:9
[INFO] [stdout]     |
[INFO] [stdout] 470 |         test_helper::run_with_several_seeds(|mut rng| {
[INFO] [stdout]     |         ^^^^^^^^^^^ use of unresolved module or unlinked crate `test_helper`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `test_helper`, use `cargo add test_helper` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `balanced-tree-index` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "a7a15bd5f2567f6886833ff1a1fa6b0f2f49bf59f121eec16b74947ee08897b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7a15bd5f2567f6886833ff1a1fa6b0f2f49bf59f121eec16b74947ee08897b3", kill_on_drop: false }`
[INFO] [stdout] a7a15bd5f2567f6886833ff1a1fa6b0f2f49bf59f121eec16b74947ee08897b3