[INFO] fetching crate august 2.4.0...
[INFO] checking august-2.4.0 against master#4a0ee3cdc66573c8b46471462db7088a89d25183 for pr-102513-1
[INFO] extracting crate august 2.4.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate august 2.4.0 on toolchain 4a0ee3cdc66573c8b46471462db7088a89d25183
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a0ee3cdc66573c8b46471462db7088a89d25183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate august 2.4.0
[INFO] finished tweaking crates.io crate august 2.4.0
[INFO] tweaked toml for crates.io crate august 2.4.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate august 2.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a0ee3cdc66573c8b46471462db7088a89d25183" "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 itertools v0.8.1
[INFO] [stderr]   Downloaded serde_derive v1.0.82
[INFO] [stderr]   Downloaded unicode-segmentation v1.3.0
[INFO] [stderr]   Downloaded argparse v0.2.2
[INFO] [stderr]   Downloaded num-rational v0.2.2
[INFO] [stderr]   Downloaded num-traits v0.2.8
[INFO] [stderr]   Downloaded serde v1.0.82
[INFO] [stderr]   Downloaded num-bigint v0.2.2
[INFO] [stderr]   Downloaded term_size v0.3.1
[INFO] [stderr]   Downloaded syn v0.15.23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+4a0ee3cdc66573c8b46471462db7088a89d25183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ff4295f023669d4860a120aaf674173e7d74580344c462e08bddbab3f071b95
[INFO] running `Command { std: "docker" "start" "-a" "3ff4295f023669d4860a120aaf674173e7d74580344c462e08bddbab3f071b95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ff4295f023669d4860a120aaf674173e7d74580344c462e08bddbab3f071b95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ff4295f023669d4860a120aaf674173e7d74580344c462e08bddbab3f071b95", kill_on_drop: false }`
[INFO] [stdout] 3ff4295f023669d4860a120aaf674173e7d74580344c462e08bddbab3f071b95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+4a0ee3cdc66573c8b46471462db7088a89d25183" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d402780529e9570571c37db6459d20b73fb05e908a5115a710bd140986229eb
[INFO] running `Command { std: "docker" "start" "-a" "1d402780529e9570571c37db6459d20b73fb05e908a5115a710bd140986229eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
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[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]     Checking new_debug_unreachable v1.0.1
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]     Checking mac v0.1.1
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[INFO] [stderr]     Checking futf v0.1.4
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[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
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[INFO] [stderr]     Checking aho-corasick v0.7.6
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[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling phf_generator v0.7.24
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[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking regex v1.3.1
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[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]    Compiling serde_json v1.0.33
[INFO] [stderr]    Compiling html5ever v0.24.1
[INFO] [stderr]    Compiling markup5ever v0.9.0
[INFO] [stderr]     Checking august v2.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: named argument `count` is not used by name
[INFO] [stdout]    --> src/lib.rs:557:45
[INFO] [stdout]     |
[INFO] [stdout] 557 |                     format!("{:>width$}. ", count = id.count, width = id.count_length)
[INFO] [stdout]     |                              ----------     ^^^^^ this named argument is referred to by position in formatting string
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              this formatting argument uses named argument `count` by position
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(named_arguments_used_positionally)]` on by default
[INFO] [stdout] help: use the named argument by name to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 557 |                     format!("{count:>width$}. ", count = id.count, width = id.count_length)
[INFO] [stdout]     |                               +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: named argument `count` is not used by name
[INFO] [stdout]    --> src/lib.rs:557:45
[INFO] [stdout]     |
[INFO] [stdout] 557 |                     format!("{:>width$}. ", count = id.count, width = id.count_length)
[INFO] [stdout]     |                              ----------     ^^^^^ this named argument is referred to by position in formatting string
[INFO] [stdout]     |                              |
[INFO] [stdout]     |                              this formatting argument uses named argument `count` by position
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(named_arguments_used_positionally)]` on by default
[INFO] [stdout] help: use the named argument by name to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 557 |                     format!("{count:>width$}. ", count = id.count, width = id.count_length)
[INFO] [stdout]     |                               +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.72s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: tendril v0.4.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "1d402780529e9570571c37db6459d20b73fb05e908a5115a710bd140986229eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d402780529e9570571c37db6459d20b73fb05e908a5115a710bd140986229eb", kill_on_drop: false }`
[INFO] [stdout] 1d402780529e9570571c37db6459d20b73fb05e908a5115a710bd140986229eb