[INFO] fetching crate backtracer_core 0.0.3...
[INFO] testing backtracer_core-0.0.3 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate backtracer_core 0.0.3 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate backtracer_core 0.0.3 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 backtracer_core 0.0.3
[INFO] finished tweaking crates.io crate backtracer_core 0.0.3
[INFO] tweaked toml for crates.io crate backtracer_core 0.0.3 written to /workspace/builds/worker-1/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] 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bit_field v0.10.1
[INFO] [stderr]   Downloaded raw-cpuid v9.1.1
[INFO] [stderr]   Downloaded x86 v0.37.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 3f43bf4cbc755d3ef43ffbbc0ab5a13a91a08061f91cdce04b5222ba5935c398
[INFO] running `Command { std: "docker" "start" "-a" "3f43bf4cbc755d3ef43ffbbc0ab5a13a91a08061f91cdce04b5222ba5935c398", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f43bf4cbc755d3ef43ffbbc0ab5a13a91a08061f91cdce04b5222ba5935c398", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f43bf4cbc755d3ef43ffbbc0ab5a13a91a08061f91cdce04b5222ba5935c398", kill_on_drop: false }`
[INFO] [stdout] 3f43bf4cbc755d3ef43ffbbc0ab5a13a91a08061f91cdce04b5222ba5935c398
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 0474ae15d090a75a524d8a256032dc418853752760a1dc7109a32fd122903858
[INFO] running `Command { std: "docker" "start" "-a" "0474ae15d090a75a524d8a256032dc418853752760a1dc7109a32fd122903858", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling x86 v0.37.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.20
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling gimli v0.24.0
[INFO] [stderr]    Compiling raw-cpuid v9.1.1
[INFO] [stderr]    Compiling addr2line v0.15.2
[INFO] [stderr]    Compiling backtracer_core v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.99s
[INFO] running `Command { std: "docker" "inspect" "0474ae15d090a75a524d8a256032dc418853752760a1dc7109a32fd122903858", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0474ae15d090a75a524d8a256032dc418853752760a1dc7109a32fd122903858", kill_on_drop: false }`
[INFO] [stdout] 0474ae15d090a75a524d8a256032dc418853752760a1dc7109a32fd122903858
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 10b3d0ca3a31e3f22f658f80171876549a93b399398654f0ba0024dd4c38edfa
[INFO] running `Command { std: "docker" "start" "-a" "10b3d0ca3a31e3f22f658f80171876549a93b399398654f0ba0024dd4c38edfa", kill_on_drop: false }`
[INFO] [stderr]    Compiling backtracer_core v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "10b3d0ca3a31e3f22f658f80171876549a93b399398654f0ba0024dd4c38edfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10b3d0ca3a31e3f22f658f80171876549a93b399398654f0ba0024dd4c38edfa", kill_on_drop: false }`
[INFO] [stdout] 10b3d0ca3a31e3f22f658f80171876549a93b399398654f0ba0024dd4c38edfa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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", kill_on_drop: false }`
[INFO] [stdout] 4fc9401c69b6247b04166cbc4700b43ced8749f44a78e150b2880e0a43dc7bcb
[INFO] running `Command { std: "docker" "start" "-a" "4fc9401c69b6247b04166cbc4700b43ced8749f44a78e150b2880e0a43dc7bcb", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/backtracer_core-49b9f9d1106472f5)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests backtracer_core
[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/backtrace/mod.rs - backtrace::trace (line 26) ... FAILED
[INFO] [stdout] test src/symbolize/mod.rs - symbolize::resolve (line 27) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[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: aborting due to 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/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 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] 
[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 0.10s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "4fc9401c69b6247b04166cbc4700b43ced8749f44a78e150b2880e0a43dc7bcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fc9401c69b6247b04166cbc4700b43ced8749f44a78e150b2880e0a43dc7bcb", kill_on_drop: false }`
[INFO] [stdout] 4fc9401c69b6247b04166cbc4700b43ced8749f44a78e150b2880e0a43dc7bcb