[INFO] fetching crate jsonformat 1.2.0...
[INFO] testing jsonformat-1.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate jsonformat 1.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate jsonformat 1.2.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jsonformat 1.2.0
[INFO] finished tweaking crates.io crate jsonformat 1.2.0
[INFO] tweaked toml for crates.io crate jsonformat 1.2.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate jsonformat 1.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dee64f45a7cd572d6db620543087e18f803c947363dfa777a74b9c3e27e78464
[INFO] running `Command { std: "docker" "start" "-a" "dee64f45a7cd572d6db620543087e18f803c947363dfa777a74b9c3e27e78464", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dee64f45a7cd572d6db620543087e18f803c947363dfa777a74b9c3e27e78464", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dee64f45a7cd572d6db620543087e18f803c947363dfa777a74b9c3e27e78464", kill_on_drop: false }`
[INFO] [stdout] dee64f45a7cd572d6db620543087e18f803c947363dfa777a74b9c3e27e78464
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9ac49ffaf33836580b33a9ee6b9cdaaec21c6567e91a4253b3cd79afa2e786b
[INFO] running `Command { std: "docker" "start" "-a" "f9ac49ffaf33836580b33a9ee6b9cdaaec21c6567e91a4253b3cd79afa2e786b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling jsonformat v1.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut windows_output_default_file: Option<String> = None;
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.66s
[INFO] running `Command { std: "docker" "inspect" "f9ac49ffaf33836580b33a9ee6b9cdaaec21c6567e91a4253b3cd79afa2e786b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9ac49ffaf33836580b33a9ee6b9cdaaec21c6567e91a4253b3cd79afa2e786b", kill_on_drop: false }`
[INFO] [stdout] f9ac49ffaf33836580b33a9ee6b9cdaaec21c6567e91a4253b3cd79afa2e786b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 800c647520cbf799170a6bdc3713e111cb0d92c3073a1152acc021a9a8dfc33c
[INFO] running `Command { std: "docker" "start" "-a" "800c647520cbf799170a6bdc3713e111cb0d92c3073a1152acc021a9a8dfc33c", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling criterion v0.3.4
[INFO] [stderr]    Compiling jsonformat v1.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut windows_output_default_file: Option<String> = None;
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 12.12s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "800c647520cbf799170a6bdc3713e111cb0d92c3073a1152acc021a9a8dfc33c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "800c647520cbf799170a6bdc3713e111cb0d92c3073a1152acc021a9a8dfc33c", kill_on_drop: false }`
[INFO] [stdout] 800c647520cbf799170a6bdc3713e111cb0d92c3073a1152acc021a9a8dfc33c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b24bd952b9e25ea33dc4bb1609ad3f12f2a713399f05bd0ad89aa468a2deb2b4
[INFO] running `Command { std: "docker" "start" "-a" "b24bd952b9e25ea33dc4bb1609ad3f12f2a713399f05bd0ad89aa468a2deb2b4", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:48:9
[INFO] [stderr]    |
[INFO] [stderr] 48 |     let mut windows_output_default_file: Option<String> = None;
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `jsonformat` (bin "jsonformat" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/jsonformat-2d61abaabffd30fc)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test test::array_of_object ... ok
[INFO] [stdout] test test::already_formatted ... ok
[INFO] [stdout] test test::echoes_primitive ... ok
[INFO] [stdout] test test::handle_escaped_strings ... ok
[INFO] [stdout] test test::ignore_whitespace_in_string ... ok
[INFO] [stdout] test test::simple_array ... ok
[INFO] [stdout] test test::simple_object ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/jsonformat-eb815dcf3ed5a3c8)
[INFO] [stdout] test test::remove_leading_whitespace ... ok
[INFO] [stderr]    Doc-tests jsonformat
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[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 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" "b24bd952b9e25ea33dc4bb1609ad3f12f2a713399f05bd0ad89aa468a2deb2b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b24bd952b9e25ea33dc4bb1609ad3f12f2a713399f05bd0ad89aa468a2deb2b4", kill_on_drop: false }`
[INFO] [stdout] b24bd952b9e25ea33dc4bb1609ad3f12f2a713399f05bd0ad89aa468a2deb2b4