[INFO] fetching crate balanced-tree-index 2.0.0...
[INFO] testing balanced-tree-index-2.0.0 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate balanced-tree-index 2.0.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate balanced-tree-index 2.0.0 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate balanced-tree-index 2.0.0
[INFO] finished tweaking crates.io crate balanced-tree-index 2.0.0
[INFO] tweaked toml for crates.io crate balanced-tree-index 2.0.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aligned-array v1.0.1
[INFO] [stderr]   Downloaded aligned-cmov v2.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 781b03f6bf011a06bd38eb1c17795c9c093ec4fc7a158c05f533c6e52a135979
[INFO] running `Command { std: "docker" "start" "-a" "781b03f6bf011a06bd38eb1c17795c9c093ec4fc7a158c05f533c6e52a135979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "781b03f6bf011a06bd38eb1c17795c9c093ec4fc7a158c05f533c6e52a135979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "781b03f6bf011a06bd38eb1c17795c9c093ec4fc7a158c05f533c6e52a135979", kill_on_drop: false }`
[INFO] [stdout] 781b03f6bf011a06bd38eb1c17795c9c093ec4fc7a158c05f533c6e52a135979
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef5f89008dcc04c56c0801ee878a180bc801ad907322ccd6679b0d9958105df4
[INFO] running `Command { std: "docker" "start" "-a" "ef5f89008dcc04c56c0801ee878a180bc801ad907322ccd6679b0d9958105df4", kill_on_drop: false }`
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling aligned-array v1.0.1
[INFO] [stderr]    Compiling aligned-cmov v2.0.0
[INFO] [stderr]    Compiling balanced-tree-index v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "ef5f89008dcc04c56c0801ee878a180bc801ad907322ccd6679b0d9958105df4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef5f89008dcc04c56c0801ee878a180bc801ad907322ccd6679b0d9958105df4", kill_on_drop: false }`
[INFO] [stdout] ef5f89008dcc04c56c0801ee878a180bc801ad907322ccd6679b0d9958105df4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2aad109d2f043ed2f88efb599b8e830318d9bbc0c39dc78f144600b980c29971
[INFO] running `Command { std: "docker" "start" "-a" "2aad109d2f043ed2f88efb599b8e830318d9bbc0c39dc78f144600b980c29971", kill_on_drop: false }`
[INFO] [stderr]    Compiling balanced-tree-index v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `test_helper`
[INFO] [stdout]    --> src/lib.rs:226:9
[INFO] [stdout]     |
[INFO] [stdout] 226 |         test_helper::run_with_several_seeds(|mut rng| {
[INFO] [stdout]     |         ^^^^^^^^^^^ use of undeclared crate or module `test_helper`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `test_helper`
[INFO] [stdout]    --> src/lib.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 |         test_helper::run_with_several_seeds(|mut rng| {
[INFO] [stdout]     |         ^^^^^^^^^^^ use of undeclared crate or module `test_helper`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `test_helper`
[INFO] [stdout]    --> src/lib.rs:435:9
[INFO] [stdout]     |
[INFO] [stdout] 435 |         test_helper::run_with_several_seeds(|mut rng| {
[INFO] [stdout]     |         ^^^^^^^^^^^ use of undeclared crate or module `test_helper`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `test_helper`
[INFO] [stdout]    --> src/lib.rs:463:9
[INFO] [stdout]     |
[INFO] [stdout] 463 |         test_helper::run_with_several_seeds(|mut rng| {
[INFO] [stdout]     |         ^^^^^^^^^^^ use of undeclared crate or module `test_helper`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "2aad109d2f043ed2f88efb599b8e830318d9bbc0c39dc78f144600b980c29971", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2aad109d2f043ed2f88efb599b8e830318d9bbc0c39dc78f144600b980c29971", kill_on_drop: false }`
[INFO] [stdout] 2aad109d2f043ed2f88efb599b8e830318d9bbc0c39dc78f144600b980c29971