[INFO] fetching crate log2graph 0.1.1...
[INFO] testing log2graph-0.1.1 against 1.91.0 for beta-1.92-2
[INFO] extracting crate log2graph 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate log2graph 0.1.1
[INFO] finished tweaking crates.io crate log2graph 0.1.1
[INFO] tweaked toml for crates.io crate log2graph 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate log2graph 0.1.1 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate log2graph 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fixedbitset v0.4.0
[INFO] [stderr]   Downloaded version_check v0.9.3
[INFO] [stderr]   Downloaded strsim v0.8.0
[INFO] [stderr]   Downloaded unicode-segmentation v1.8.0
[INFO] [stderr]   Downloaded structopt v0.3.23
[INFO] [stderr]   Downloaded indexmap v1.7.0
[INFO] [stderr]   Downloaded petgraph v0.6.0
[INFO] [stderr]   Downloaded syn v1.0.77
[INFO] [stderr]   Downloaded ansi_term v0.11.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.29
[INFO] [stderr]   Downloaded libc v0.2.103
[INFO] [stderr]   Downloaded unicode-width v0.1.9
[INFO] [stderr]   Downloaded structopt-derive v0.4.16
[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" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d0809a43cbcbb19a846208dc010549883d5b0098b4d8bf6fe3ef0b25eecae90
[INFO] running `Command { std: "docker" "start" "-a" "4d0809a43cbcbb19a846208dc010549883d5b0098b4d8bf6fe3ef0b25eecae90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d0809a43cbcbb19a846208dc010549883d5b0098b4d8bf6fe3ef0b25eecae90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d0809a43cbcbb19a846208dc010549883d5b0098b4d8bf6fe3ef0b25eecae90", kill_on_drop: false }`
[INFO] [stdout] 4d0809a43cbcbb19a846208dc010549883d5b0098b4d8bf6fe3ef0b25eecae90
[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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b865ebd0e5c78694588259cbb20ad4a59a2235f47ae12c1fff6062c5231ccc3
[INFO] running `Command { std: "docker" "start" "-a" "9b865ebd0e5c78694588259cbb20ad4a59a2235f47ae12c1fff6062c5231ccc3", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.77
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling fixedbitset v0.4.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling petgraph v0.6.0
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]    Compiling structopt v0.3.23
[INFO] [stderr]    Compiling log2graph v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     std::fs::create_dir_all(output_dir);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 118 |     let _ = std::fs::create_dir_all(output_dir);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.40s
[INFO] running `Command { std: "docker" "inspect" "9b865ebd0e5c78694588259cbb20ad4a59a2235f47ae12c1fff6062c5231ccc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b865ebd0e5c78694588259cbb20ad4a59a2235f47ae12c1fff6062c5231ccc3", kill_on_drop: false }`
[INFO] [stdout] 9b865ebd0e5c78694588259cbb20ad4a59a2235f47ae12c1fff6062c5231ccc3
[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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab285fc4cfea03fe98796a2ff351dbdfd6a2e2cf13bcece6ceb1ff31a1f8e6bd
[INFO] running `Command { std: "docker" "start" "-a" "ab285fc4cfea03fe98796a2ff351dbdfd6a2e2cf13bcece6ceb1ff31a1f8e6bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling log2graph v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     std::fs::create_dir_all(output_dir);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 118 |     let _ = std::fs::create_dir_all(output_dir);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "ab285fc4cfea03fe98796a2ff351dbdfd6a2e2cf13bcece6ceb1ff31a1f8e6bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab285fc4cfea03fe98796a2ff351dbdfd6a2e2cf13bcece6ceb1ff31a1f8e6bd", kill_on_drop: false }`
[INFO] [stdout] ab285fc4cfea03fe98796a2ff351dbdfd6a2e2cf13bcece6ceb1ff31a1f8e6bd
[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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2b37683a81cac6777e5ccbb9357b5e4760f1b95f56a6483605bd48e484676df6
[INFO] running `Command { std: "docker" "start" "-a" "2b37683a81cac6777e5ccbb9357b5e4760f1b95f56a6483605bd48e484676df6", kill_on_drop: false }`
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:118:5
[INFO] [stderr]     |
[INFO] [stderr] 118 |     std::fs::create_dir_all(output_dir);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 118 |     let _ = std::fs::create_dir_all(output_dir);
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `log2graph` (bin "log2graph" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/log2graph-00b5fca868a3d18d)
[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" "2b37683a81cac6777e5ccbb9357b5e4760f1b95f56a6483605bd48e484676df6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b37683a81cac6777e5ccbb9357b5e4760f1b95f56a6483605bd48e484676df6", kill_on_drop: false }`
[INFO] [stdout] 2b37683a81cac6777e5ccbb9357b5e4760f1b95f56a6483605bd48e484676df6