[INFO] fetching crate prometheus_web_exporter 1.0.6...
[INFO] checking prometheus_web_exporter-1.0.6 against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] extracting crate prometheus_web_exporter 1.0.6 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate prometheus_web_exporter 1.0.6 on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prometheus_web_exporter 1.0.6
[INFO] finished tweaking crates.io crate prometheus_web_exporter 1.0.6
[INFO] tweaked toml for crates.io crate prometheus_web_exporter 1.0.6 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate prometheus_web_exporter 1.0.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-traits v0.2.11
[INFO] [stderr]   Downloaded linked-hash-map v0.3.0
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[INFO] [stderr]   Downloaded rust-ini v0.13.0
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[INFO] [stderr]   Downloaded scraper v0.11.0
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[INFO] [stderr]   Downloaded phf_codegen v0.7.24
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[INFO] [stderr]   Downloaded serde v1.0.111
[INFO] [stderr]   Downloaded multipart v0.16.1
[INFO] [stderr]   Downloaded dtoa v0.4.5
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[INFO] [stderr]   Downloaded tokio-tungstenite v0.10.1
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[INFO] [stderr]   Downloaded itoa v0.4.5
[INFO] [stderr]   Downloaded tungstenite v0.10.1
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.63
[INFO] [stderr]   Downloaded rustls v0.17.0
[INFO] [stderr]   Downloaded config v0.10.1
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.63
[INFO] [stderr]   Downloaded ego-tree v0.6.2
[INFO] [stderr]   Downloaded servo_arc v0.1.1
[INFO] [stderr]   Downloaded new_debug_unreachable v1.0.4
[INFO] [stderr]   Downloaded futf v0.1.4
[INFO] [stderr]   Downloaded syn v1.0.31
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[INFO] [stderr]   Downloaded libc v0.2.71
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[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfcb5b6af301cad4de1b74e0c41a08bcb64530229ed2c4e6b3ffdca16e564321
[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" "dfcb5b6af301cad4de1b74e0c41a08bcb64530229ed2c4e6b3ffdca16e564321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfcb5b6af301cad4de1b74e0c41a08bcb64530229ed2c4e6b3ffdca16e564321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfcb5b6af301cad4de1b74e0c41a08bcb64530229ed2c4e6b3ffdca16e564321", kill_on_drop: false }`
[INFO] [stdout] dfcb5b6af301cad4de1b74e0c41a08bcb64530229ed2c4e6b3ffdca16e564321
[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=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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 013f045715b97839232c4498cd4854242ee2bed3065471ce9092a604ef4eefc5
[INFO] running `Command { std: "docker" "start" "-a" "013f045715b97839232c4498cd4854242ee2bed3065471ce9092a604ef4eefc5", 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]    Compiling syn v1.0.31
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling serde_json v1.0.55
[INFO] [stderr]    Compiling proc-macro-nested v0.1.5
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking alloc-no-stdlib v2.0.1
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]    Compiling procedural-masquerade v0.1.6
[INFO] [stderr]     Checking string_cache_shared v0.3.0
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking safemem v0.3.3
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking thin-slice v0.1.1
[INFO] [stderr]     Checking urlencoding v1.0.0
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking input_buffer v0.3.1
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking dtoa-short v0.3.2
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking futf v0.1.4
[INFO] [stderr]     Checking alloc-stdlib v0.2.1
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking servo_arc v0.1.1
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking arrayvec v0.4.12
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]     Checking encoding_rs v0.8.23
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]     Checking ring v0.16.14
[INFO] [stderr]    Compiling indexmap v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling lexical-core v0.6.2
[INFO] [stderr]     Checking brotli-decompressor v2.3.1
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking tendril v0.4.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking serde_test v0.8.23
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking headers v0.3.2
[INFO] [stderr]     Checking brotli v3.3.0
[INFO] [stderr]     Checking linked-hash-map v0.3.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking rustls v0.17.0
[INFO] [stderr]     Checking webpki-roots v0.19.0
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling mime_guess v1.8.8
[INFO] [stderr]    Compiling selectors v0.21.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking serde-hjson v0.9.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking tungstenite v0.10.1
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]     Checking multipart v0.16.1
[INFO] [stderr]     Checking async-compression v0.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling pin-project-internal v0.4.20
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling cssparser v0.25.9
[INFO] [stderr]    Compiling cssparser-macros v0.3.6
[INFO] [stderr]    Compiling html5ever v0.24.1
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking pin-project v0.4.20
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-rustls v0.13.1
[INFO] [stderr]     Checking serde v1.0.111
[INFO] [stderr]     Checking h2 v0.2.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking tokio-tungstenite v0.10.1
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking hyper v0.13.6
[INFO] [stderr]     Checking config v0.10.1
[INFO] [stderr]    Compiling markup5ever v0.9.0
[INFO] [stderr]     Checking hyper-rustls v0.20.0
[INFO] [stderr]     Checking warp v0.2.3
[INFO] [stderr]     Checking reqwest v0.10.6
[INFO] [stderr]     Checking scraper v0.11.0
[INFO] [stderr]     Checking prometheus_web_exporter v1.0.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 05s
[INFO] running `Command { std: "docker" "inspect" "013f045715b97839232c4498cd4854242ee2bed3065471ce9092a604ef4eefc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "013f045715b97839232c4498cd4854242ee2bed3065471ce9092a604ef4eefc5", kill_on_drop: false }`
[INFO] [stdout] 013f045715b97839232c4498cd4854242ee2bed3065471ce9092a604ef4eefc5