[INFO] fetching crate grcov 0.8.0...
[INFO] building grcov-0.8.0 against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] extracting crate grcov 0.8.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate grcov 0.8.0 on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/source/.cargo/config
[INFO] started tweaking crates.io crate grcov 0.8.0
[INFO] finished tweaking crates.io crate grcov 0.8.0
[INFO] tweaked toml for crates.io crate grcov 0.8.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate grcov 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 323d2acb3a47ae8eed4ce0ea2b523b2882f5cdcf0932bec179fa50929cda8077
[INFO] running `Command { std: "docker" "start" "-a" "323d2acb3a47ae8eed4ce0ea2b523b2882f5cdcf0932bec179fa50929cda8077", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "323d2acb3a47ae8eed4ce0ea2b523b2882f5cdcf0932bec179fa50929cda8077", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "323d2acb3a47ae8eed4ce0ea2b523b2882f5cdcf0932bec179fa50929cda8077", kill_on_drop: false }`
[INFO] [stdout] 323d2acb3a47ae8eed4ce0ea2b523b2882f5cdcf0932bec179fa50929cda8077
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4909e32f5a6df2e046b563af6c169512b688883ad32a2af9afaac5900b6b1ba1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4909e32f5a6df2e046b563af6c169512b688883ad32a2af9afaac5900b6b1ba1", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling const_fn v0.4.5
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling gimli v0.23.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling rustc-demangle v0.1.18
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling unic-common v0.9.0
[INFO] [stderr]    Compiling unic-char-range v0.9.0
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling object v0.23.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling deunicode v0.4.3
[INFO] [stderr]    Compiling symbolic-demangle v8.0.5
[INFO] [stderr]    Compiling byteorder v1.4.2
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling opaque-debug v0.3.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling fomat-macros v0.3.1
[INFO] [stderr]    Compiling is_executable v1.0.1
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling thread_local v1.1.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling unic-ucd-version v0.9.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling unic-char-property v0.9.0
[INFO] [stderr]    Compiling slug v0.1.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling unic-ucd-segment v0.9.0
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling bstr v0.2.14
[INFO] [stderr]    Compiling quick-xml v0.22.0
[INFO] [stderr]    Compiling msvc-demangler v0.8.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling cpp_demangle v0.3.2
[INFO] [stderr]    Compiling rand_core v0.6.1
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling unic-segment v0.9.0
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling libz-sys v1.1.2
[INFO] [stderr]    Compiling debugid v0.7.2
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling rand v0.8.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.1
[INFO] [stderr]    Compiling symbolic-common v8.0.5
[INFO] [stderr]    Compiling md-5 v0.9.1
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling addr2line v0.14.1
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling backtrace v0.3.56
[INFO] [stderr]    Compiling crossbeam v0.8.0
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling parse-zoneinfo v0.3.0
[INFO] [stderr]    Compiling globset v0.4.6
[INFO] [stderr]    Compiling ignore v0.4.17
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling globwalk v0.8.1
[INFO] [stderr]    Compiling chrono-tz v0.5.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling thiserror v1.0.23
[INFO] [stderr]    Compiling rustc-cfg v0.4.0
[INFO] [stderr]    Compiling zip v0.5.12
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling semver v0.10.0
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling simplelog v0.10.0
[INFO] [stderr]    Compiling cargo_metadata v0.11.4
[INFO] [stderr]    Compiling cargo-binutils v0.3.3
[INFO] [stderr]    Compiling tera v1.7.1
[INFO] [stderr]    Compiling grcov v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `cwd`
[INFO] [stdout]   --> src/reader.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     cwd: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 1m 58s
[INFO] running `Command { std: "docker" "inspect" "4909e32f5a6df2e046b563af6c169512b688883ad32a2af9afaac5900b6b1ba1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4909e32f5a6df2e046b563af6c169512b688883ad32a2af9afaac5900b6b1ba1", kill_on_drop: false }`
[INFO] [stdout] 4909e32f5a6df2e046b563af6c169512b688883ad32a2af9afaac5900b6b1ba1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9e1e33297b31bbd2e23e5cd9737f2967b3287323bf33f48ef8efd76a197b2ff
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b9e1e33297b31bbd2e23e5cd9737f2967b3287323bf33f48ef8efd76a197b2ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stdout] warning: field is never read: `cwd`
[INFO] [stdout]   --> src/reader.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     cwd: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pretty_assertions v0.7.2
[INFO] [stderr]    Compiling grcov v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `cwd`
[INFO] [stdout]   --> src/reader.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     cwd: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/producer.rs:1562:28
[INFO] [stdout]      |
[INFO] [stdout] 1562 |             assert!(false, format!("Failed to read the file: {}", json_path));
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout]      = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]      |
[INFO] [stdout] 1562 |             assert!(false, "Failed to read the file: {}", json_path);
[INFO] [stdout]      |                           --                                      --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 11.96s
[INFO] running `Command { std: "docker" "inspect" "b9e1e33297b31bbd2e23e5cd9737f2967b3287323bf33f48ef8efd76a197b2ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9e1e33297b31bbd2e23e5cd9737f2967b3287323bf33f48ef8efd76a197b2ff", kill_on_drop: false }`
[INFO] [stdout] b9e1e33297b31bbd2e23e5cd9737f2967b3287323bf33f48ef8efd76a197b2ff
