[INFO] fetching crate ajars_client_surf 0.10.0...
[INFO] checking ajars_client_surf-0.10.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate ajars_client_surf 0.10.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate ajars_client_surf 0.10.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ajars_client_surf 0.10.0
[INFO] finished tweaking crates.io crate ajars_client_surf 0.10.0
[INFO] tweaked toml for crates.io crate ajars_client_surf 0.10.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 203 packages
[INFO] [stderr]       Adding aead v0.3.2 (latest: v0.5.2)
[INFO] [stderr]       Adding aes v0.6.0 (latest: v0.8.4)
[INFO] [stderr]       Adding aes-gcm v0.8.0 (latest: v0.10.3)
[INFO] [stderr]       Adding aes-soft v0.6.4 (latest: v0.99.99)
[INFO] [stderr]       Adding aesni v0.10.0 (latest: v0.99.99)
[INFO] [stderr]       Adding ajars_core v0.10.0 (latest: v0.11.0)
[INFO] [stderr]       Adding async-channel v1.9.0 (latest: v2.2.0)
[INFO] [stderr]       Adding async-io v1.13.0 (latest: v2.3.2)
[INFO] [stderr]       Adding async-lock v2.8.0 (latest: v3.3.0)
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.0)
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[INFO] [stderr]       Adding block-buffer v0.9.0 (latest: v0.10.4)
[INFO] [stderr]       Adding bytes v0.5.6 (latest: v1.6.0)
[INFO] [stderr]       Adding cipher v0.2.5 (latest: v0.4.4)
[INFO] [stderr]       Adding cookie v0.14.4 (latest: v0.18.1)
[INFO] [stderr]       Adding cpuid-bool v0.2.0 (latest: v0.99.99)
[INFO] [stderr]       Adding crypto-mac v0.10.1 (latest: v0.11.1)
[INFO] [stderr]       Adding ctr v0.6.0 (latest: v0.9.2)
[INFO] [stderr]       Adding digest v0.9.0 (latest: v0.10.7)
[INFO] [stderr]       Adding event-listener v2.5.3 (latest: v5.3.0)
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[INFO] [stderr]       Adding fastrand v1.9.0 (latest: v2.0.2)
[INFO] [stderr]       Adding flume v0.9.2 (latest: v0.11.0)
[INFO] [stderr]       Adding futures-lite v1.13.0 (latest: v2.3.0)
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[INFO] [stderr]       Adding getrandom v0.1.16 (latest: v0.2.12)
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[INFO] [stderr]       Adding gloo-timers v0.2.6 (latest: v0.3.0)
[INFO] [stderr]       Adding hkdf v0.10.0 (latest: v0.12.4)
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[INFO] [stderr]       Adding http v0.2.12 (latest: v1.1.0)
[INFO] [stderr]       Adding infer v0.2.3 (latest: v0.15.0)
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[INFO] [stderr]       Adding rand_core v0.5.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_hc v0.2.0 (latest: v0.3.2)
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.0)
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[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.22)
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[INFO] [stderr]       Adding serde_qs v0.8.5 (latest: v0.12.0)
[INFO] [stderr]       Adding sha1 v0.6.1 (latest: v0.10.6)
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[INFO] [stderr]       Adding socket2 v0.4.10 (latest: v0.5.6)
[INFO] [stderr]       Adding spinning_top v0.2.5 (latest: v0.3.0)
[INFO] [stderr]       Adding standback v0.2.17 (latest: v0.4.4)
[INFO] [stderr]       Adding subtle v2.4.1 (latest: v2.5.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding time v0.2.27 (latest: v0.3.34)
[INFO] [stderr]       Adding time-macros v0.1.1 (latest: v0.2.17)
[INFO] [stderr]       Adding universal-hash v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding wasi v0.9.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.52.0)
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[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4)
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[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] [stderr]   Downloaded surf v2.3.2
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[INFO] [stderr]   Downloaded parking v2.2.0
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[INFO] [stderr]   Downloaded serde_qs v0.8.5
[INFO] [stderr]   Downloaded ajars_core v0.10.0
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[INFO] [stderr]   Downloaded async-std v1.12.0
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[INFO] [stderr]   Downloaded http-types v2.12.0
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[INFO] [stderr]   Downloaded isahc v0.9.14
[INFO] [stderr]   Downloaded http-client v6.5.3
[INFO] [stderr]   Downloaded libnghttp2-sys v0.1.9+1.58.0
[INFO] [stderr]   Downloaded polling v3.6.0
[INFO] [stderr]   Downloaded event-listener v5.3.0
[INFO] [stderr]   Downloaded io-lifetimes v1.0.11
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[INFO] [stderr]   Downloaded async-lock v2.8.0
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[INFO] [stderr]   Downloaded aesni v0.10.0
[INFO] [stderr]   Downloaded curl-sys v0.4.72+curl-8.6.0
[INFO] [stderr]   Downloaded aes v0.6.0
[INFO] [stderr]   Downloaded ctr v0.6.0
[INFO] [stderr]   Downloaded polyval v0.4.5
[INFO] [stderr]   Downloaded libz-sys v1.1.16
[INFO] [stderr]   Downloaded aes-gcm v0.8.0
[INFO] [stderr]   Downloaded async-io v2.3.2
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[INFO] [stderr]   Downloaded async-lock v3.3.0
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[INFO] [stderr]   Downloaded atomic-waker v1.1.2
[INFO] [stderr]   Downloaded futures-lite v2.3.0
[INFO] [stderr]   Downloaded async-global-executor v2.4.1
[INFO] [stderr]   Downloaded polling v2.8.0
[INFO] [stderr]   Downloaded async-io v1.13.0
[INFO] [stderr]   Downloaded ghash v0.3.1
[INFO] [stderr]   Downloaded event-listener v4.0.3
[INFO] [stderr]   Downloaded event-listener-strategy v0.4.0
[INFO] [stderr]   Downloaded piper v0.2.1
[INFO] [stderr]   Downloaded blocking v1.5.1
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[INFO] [stderr]   Downloaded kv-log-macro v1.0.7
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.42
[INFO] [stderr]   Downloaded aead v0.3.2
[INFO] [stderr]   Downloaded cipher v0.2.5
[INFO] [stderr]   Downloaded crypto-mac v0.10.1
[INFO] [stderr]   Downloaded cpuid-bool v0.2.0
[INFO] [stderr]   Downloaded async-channel v1.9.0
[INFO] [stderr]   Downloaded event-listener-strategy v0.5.1
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[INFO] [stderr]   Downloaded hkdf v0.10.0
[INFO] [stderr]   Downloaded subtle v2.4.1
[INFO] [stderr]   Downloaded hmac v0.10.1
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[INFO] [stderr]   Downloaded fastrand v1.9.0
[INFO] [stderr]   Downloaded value-bag v1.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad7513507d34bd02b78491814d011c7f9fff898ce5928574219999bafd5818ad
[INFO] running `Command { std: "docker" "start" "-a" "ad7513507d34bd02b78491814d011c7f9fff898ce5928574219999bafd5818ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad7513507d34bd02b78491814d011c7f9fff898ce5928574219999bafd5818ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad7513507d34bd02b78491814d011c7f9fff898ce5928574219999bafd5818ad", kill_on_drop: false }`
[INFO] [stdout] ad7513507d34bd02b78491814d011c7f9fff898ce5928574219999bafd5818ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 541cb811d7bf5fd898b0c57fda60a74f7df0d6db92a715aac358160896377339
[INFO] running `Command { std: "docker" "start" "-a" "541cb811d7bf5fd898b0c57fda60a74f7df0d6db92a715aac358160896377339", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
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[INFO] [stderr]     Checking http-client v6.5.3
[INFO] [stderr]     Checking surf v2.3.2
[INFO] [stderr]     Checking ajars_client_surf v0.10.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 45.07s
[INFO] running `Command { std: "docker" "inspect" "541cb811d7bf5fd898b0c57fda60a74f7df0d6db92a715aac358160896377339", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "541cb811d7bf5fd898b0c57fda60a74f7df0d6db92a715aac358160896377339", kill_on_drop: false }`
[INFO] [stdout] 541cb811d7bf5fd898b0c57fda60a74f7df0d6db92a715aac358160896377339
[INFO] checking ajars_client_surf-0.10.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate ajars_client_surf 0.10.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate ajars_client_surf 0.10.0 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ajars_client_surf 0.10.0
[INFO] finished tweaking crates.io crate ajars_client_surf 0.10.0
[INFO] tweaked toml for crates.io crate ajars_client_surf 0.10.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf9b268dbfa5cbebed82369e5d54c309919ed182cfdd11d7a7cf382eebda9e68
[INFO] running `Command { std: "docker" "start" "-a" "bf9b268dbfa5cbebed82369e5d54c309919ed182cfdd11d7a7cf382eebda9e68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf9b268dbfa5cbebed82369e5d54c309919ed182cfdd11d7a7cf382eebda9e68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf9b268dbfa5cbebed82369e5d54c309919ed182cfdd11d7a7cf382eebda9e68", kill_on_drop: false }`
[INFO] [stdout] bf9b268dbfa5cbebed82369e5d54c309919ed182cfdd11d7a7cf382eebda9e68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ac37aca7e011080dda9cd0cb0f78100840f684a61ca57d07e8516d803340a30
[INFO] running `Command { std: "docker" "start" "-a" "1ac37aca7e011080dda9cd0cb0f78100840f684a61ca57d07e8516d803340a30", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling typenum v1.17.0
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[INFO] [stderr]     Checking opaque-debug v0.3.1
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[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking percent-encoding v2.3.1
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[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.92
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[INFO] [stderr]    Compiling getrandom v0.1.16
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[INFO] [stderr]    Compiling curl-sys v0.4.72+curl-8.6.0
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[INFO] [stderr]    Compiling openssl-sys v0.9.102
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[INFO] [stderr]     Checking fastrand v1.9.0
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[INFO] [stderr]    Compiling rustix v0.37.27
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[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
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[INFO] [stderr]    Compiling thiserror v1.0.58
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[INFO] [stderr]    Compiling cookie v0.14.4
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[INFO] [stderr]    Compiling curl v0.4.46
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking aes-gcm v0.8.0
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[INFO] [stderr]     Checking socket2 v0.5.6
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]    Compiling async-trait v0.1.79
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]    Compiling http-types v2.12.0
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]    Compiling isahc v0.9.14
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking flume v0.9.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking sluice v0.5.5
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking infer v0.2.3
[INFO] [stderr]     Checking http v0.2.12
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[INFO] [stderr]     Checking mime v0.3.17
[INFO] [stderr]     Checking encoding_rs v0.8.33
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.92
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.92
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.92
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking pin-project v1.1.5
[INFO] [stderr]     Checking polling v3.6.0
[INFO] [stderr]     Checking blocking v1.5.1
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking async-io v2.3.2
[INFO] [stderr]     Checking js-sys v0.3.69
[INFO] [stderr]     Checking async-global-executor v2.4.1
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking web-sys v0.3.69
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking serde_qs v0.8.5
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking ajars_core v0.10.0
[INFO] [stderr]     Checking http-client v6.5.3
[INFO] [stderr]     Checking surf v2.3.2
[INFO] [stderr]     Checking ajars_client_surf v0.10.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 28.59s
[INFO] running `Command { std: "docker" "inspect" "1ac37aca7e011080dda9cd0cb0f78100840f684a61ca57d07e8516d803340a30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ac37aca7e011080dda9cd0cb0f78100840f684a61ca57d07e8516d803340a30", kill_on_drop: false }`
[INFO] [stdout] 1ac37aca7e011080dda9cd0cb0f78100840f684a61ca57d07e8516d803340a30