[INFO] fetching crate backtrait_error 2.1.0...
[INFO] testing backtrait_error-2.1.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate backtrait_error 2.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate backtrait_error 2.1.0
[INFO] finished tweaking crates.io crate backtrait_error 2.1.0
[INFO] tweaked toml for crates.io crate backtrait_error 2.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate backtrait_error 2.1.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e61571d0d517af864773b326b1a30c5f2aef0e3c2763005cd0e80a4dfba1b53
[INFO] running `Command { std: "docker" "start" "-a" "8e61571d0d517af864773b326b1a30c5f2aef0e3c2763005cd0e80a4dfba1b53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e61571d0d517af864773b326b1a30c5f2aef0e3c2763005cd0e80a4dfba1b53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e61571d0d517af864773b326b1a30c5f2aef0e3c2763005cd0e80a4dfba1b53", kill_on_drop: false }`
[INFO] [stdout] 8e61571d0d517af864773b326b1a30c5f2aef0e3c2763005cd0e80a4dfba1b53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2786dad7f5bdfa79c2acd3fa812750260b91b38023c11eb07c516392d650d27d
[INFO] running `Command { std: "docker" "start" "-a" "2786dad7f5bdfa79c2acd3fa812750260b91b38023c11eb07c516392d650d27d", kill_on_drop: false }`
[INFO] [stderr]    Compiling backtrait_error v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "2786dad7f5bdfa79c2acd3fa812750260b91b38023c11eb07c516392d650d27d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2786dad7f5bdfa79c2acd3fa812750260b91b38023c11eb07c516392d650d27d", kill_on_drop: false }`
[INFO] [stdout] 2786dad7f5bdfa79c2acd3fa812750260b91b38023c11eb07c516392d650d27d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b052df2b111ac9f900585ec74cb247e7f7ff0dee9ac44295516db4393c54cee5
[INFO] running `Command { std: "docker" "start" "-a" "b052df2b111ac9f900585ec74cb247e7f7ff0dee9ac44295516db4393c54cee5", kill_on_drop: false }`
[INFO] [stderr]    Compiling backtrait_error v2.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Hmm` is never constructed
[INFO] [stdout]   --> tests/integration_test.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     struct Hmm(Box<dyn ErrorWithBacktrace>);
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "b052df2b111ac9f900585ec74cb247e7f7ff0dee9ac44295516db4393c54cee5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b052df2b111ac9f900585ec74cb247e7f7ff0dee9ac44295516db4393c54cee5", kill_on_drop: false }`
[INFO] [stdout] b052df2b111ac9f900585ec74cb247e7f7ff0dee9ac44295516db4393c54cee5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d2419815049f8a90cbe8071c17e7741e9a7d86620c71b0bbcbfa8a69dc2fffa5
[INFO] running `Command { std: "docker" "start" "-a" "d2419815049f8a90cbe8071c17e7741e9a7d86620c71b0bbcbfa8a69dc2fffa5", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Hmm` is never constructed
[INFO] [stderr]   --> tests/integration_test.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 |     struct Hmm(Box<dyn ErrorWithBacktrace>);
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `backtrait_error` (test "integration_test") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/backtrait_error-cc4807b6f8754a4b)
[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] [stderr]      Running tests/integration_test.rs (/opt/rustwide/target/debug/deps/integration_test-5203b411a2547c9b)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_crate ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests backtrait_error
[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] running `Command { std: "docker" "inspect" "d2419815049f8a90cbe8071c17e7741e9a7d86620c71b0bbcbfa8a69dc2fffa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2419815049f8a90cbe8071c17e7741e9a7d86620c71b0bbcbfa8a69dc2fffa5", kill_on_drop: false }`
[INFO] [stdout] d2419815049f8a90cbe8071c17e7741e9a7d86620c71b0bbcbfa8a69dc2fffa5