[INFO] fetching crate backtracer_core 0.0.7...
[INFO] testing backtracer_core-0.0.7 against 1.76.0 for beta-1.77-1
[INFO] extracting crate backtracer_core 0.0.7 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate backtracer_core 0.0.7 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate backtracer_core 0.0.7
[INFO] finished tweaking crates.io crate backtracer_core 0.0.7
[INFO] tweaked toml for crates.io crate backtracer_core 0.0.7 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded addr2line v0.16.0
[INFO] [stderr]   Downloaded raw-cpuid v10.7.0
[INFO] [stderr]   Downloaded gimli v0.25.0
[INFO] [stderr]   Downloaded x86 v0.52.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b53fdb3b02989fba1d449b1f78d48f01ab5e8da88e167b706731b5326df5774
[INFO] running `Command { std: "docker" "start" "-a" "4b53fdb3b02989fba1d449b1f78d48f01ab5e8da88e167b706731b5326df5774", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b53fdb3b02989fba1d449b1f78d48f01ab5e8da88e167b706731b5326df5774", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b53fdb3b02989fba1d449b1f78d48f01ab5e8da88e167b706731b5326df5774", kill_on_drop: false }`
[INFO] [stdout] 4b53fdb3b02989fba1d449b1f78d48f01ab5e8da88e167b706731b5326df5774
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e4e95ee727a8e744dceed3eed87013e2990d886f88b99ffb8421bbd5b28c3fa
[INFO] running `Command { std: "docker" "start" "-a" "7e4e95ee727a8e744dceed3eed87013e2990d886f88b99ffb8421bbd5b28c3fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling x86 v0.52.0
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling bit_field v0.10.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.23
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling raw-cpuid v10.7.0
[INFO] [stderr]    Compiling gimli v0.25.0
[INFO] [stderr]    Compiling addr2line v0.16.0
[INFO] [stderr]    Compiling backtracer_core v0.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.47s
[INFO] running `Command { std: "docker" "inspect" "7e4e95ee727a8e744dceed3eed87013e2990d886f88b99ffb8421bbd5b28c3fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e4e95ee727a8e744dceed3eed87013e2990d886f88b99ffb8421bbd5b28c3fa", kill_on_drop: false }`
[INFO] [stdout] 7e4e95ee727a8e744dceed3eed87013e2990d886f88b99ffb8421bbd5b28c3fa
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8eac82dd73db7414343238e820b38ba9c8ab66be62872ff125098953d3220df6
[INFO] running `Command { std: "docker" "start" "-a" "8eac82dd73db7414343238e820b38ba9c8ab66be62872ff125098953d3220df6", kill_on_drop: false }`
[INFO] [stderr]    Compiling backtracer_core v0.0.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "8eac82dd73db7414343238e820b38ba9c8ab66be62872ff125098953d3220df6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8eac82dd73db7414343238e820b38ba9c8ab66be62872ff125098953d3220df6", kill_on_drop: false }`
[INFO] [stdout] 8eac82dd73db7414343238e820b38ba9c8ab66be62872ff125098953d3220df6
[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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] eab9013944729fed759417b658d3874e99742163aab901e1dfcc3aa7241e568e
[INFO] running `Command { std: "docker" "start" "-a" "eab9013944729fed759417b658d3874e99742163aab901e1dfcc3aa7241e568e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/backtracer_core-c30a927ed681583f)
[INFO] [stderr]    Doc-tests backtracer_core
[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 2 tests
[INFO] [stdout] test src/symbolize/mod.rs - symbolize::resolve (line 27) ... FAILED
[INFO] [stdout] test src/backtrace/mod.rs - backtrace::trace (line 26) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/symbolize/mod.rs - symbolize::resolve (line 27) stdout ----
[INFO] [stdout] error[E0463]: can't find crate for `backtrace`
[INFO] [stdout]  --> src/symbolize/mod.rs:28:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate backtrace;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/backtrace/mod.rs - backtrace::trace (line 26) stdout ----
[INFO] [stdout] error[E0463]: can't find crate for `backtracer`
[INFO] [stdout]  --> src/backtrace/mod.rs:27:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate backtracer;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `backtrace`
[INFO] [stdout]  --> src/backtrace/mod.rs:30:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     backtrace::trace(|frame| {
[INFO] [stdout]   |     ^^^^^^^^^ use of undeclared crate or module `backtrace`
[INFO] [stdout]   |
[INFO] [stdout] help: there is a crate or module with a similar name
[INFO] [stdout]   |
[INFO] [stdout] 5 |     backtracer::trace(|frame| {
[INFO] [stdout]   |     ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0463.
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/backtrace/mod.rs - backtrace::trace (line 26)
[INFO] [stdout]     src/symbolize/mod.rs - symbolize::resolve (line 27)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "eab9013944729fed759417b658d3874e99742163aab901e1dfcc3aa7241e568e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eab9013944729fed759417b658d3874e99742163aab901e1dfcc3aa7241e568e", kill_on_drop: false }`
[INFO] [stdout] eab9013944729fed759417b658d3874e99742163aab901e1dfcc3aa7241e568e
