[INFO] fetching crate streamtools 0.7.5...
[INFO] checking streamtools-0.7.5 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate streamtools 0.7.5 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate streamtools 0.7.5 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 streamtools 0.7.5
[INFO] finished tweaking crates.io crate streamtools 0.7.5
[INFO] tweaked toml for crates.io crate streamtools 0.7.5 written to /workspace/builds/worker-2-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 56 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding redox_syscall v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4)
[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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 12302cccdedcc4e94609d1f6e8a7b73e5b0b10d23d6b4e07238a1b64117b7077
[INFO] running `Command { std: "docker" "start" "-a" "12302cccdedcc4e94609d1f6e8a7b73e5b0b10d23d6b4e07238a1b64117b7077", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12302cccdedcc4e94609d1f6e8a7b73e5b0b10d23d6b4e07238a1b64117b7077", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12302cccdedcc4e94609d1f6e8a7b73e5b0b10d23d6b4e07238a1b64117b7077", kill_on_drop: false }`
[INFO] [stdout] 12302cccdedcc4e94609d1f6e8a7b73e5b0b10d23d6b4e07238a1b64117b7077
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 093e65e126d9ecf8bdf02ff0c6a9542550c30e31944503bb2670205cda478449
[INFO] running `Command { std: "docker" "start" "-a" "093e65e126d9ecf8bdf02ff0c6a9542550c30e31944503bb2670205cda478449", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling streamtools v0.7.5 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]     Checking async-stream v0.3.5
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tokio-stream v0.1.15
[INFO] [stderr]     Checking tokio-test v0.4.4
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stdout] warning: the item `StreamExt` is imported redundantly
[INFO] [stdout]    --> src/sample.rs:132:36
[INFO] [stdout]     |
[INFO] [stdout] 132 |     use futures::{stream, SinkExt, StreamExt};
[INFO] [stdout]     |                                    ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     use super::*;
[INFO] [stdout]     |         -------- the item `StreamExt` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.12s
[INFO] running `Command { std: "docker" "inspect" "093e65e126d9ecf8bdf02ff0c6a9542550c30e31944503bb2670205cda478449", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "093e65e126d9ecf8bdf02ff0c6a9542550c30e31944503bb2670205cda478449", kill_on_drop: false }`
[INFO] [stdout] 093e65e126d9ecf8bdf02ff0c6a9542550c30e31944503bb2670205cda478449
[INFO] checking streamtools-0.7.5 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate streamtools 0.7.5 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate streamtools 0.7.5 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 streamtools 0.7.5
[INFO] finished tweaking crates.io crate streamtools 0.7.5
[INFO] tweaked toml for crates.io crate streamtools 0.7.5 written to /workspace/builds/worker-2-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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] a57d9cf6cf653fbdec6fe5aa18a550af3f4935fc391583f0bea13f574b73cfb5
[INFO] running `Command { std: "docker" "start" "-a" "a57d9cf6cf653fbdec6fe5aa18a550af3f4935fc391583f0bea13f574b73cfb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a57d9cf6cf653fbdec6fe5aa18a550af3f4935fc391583f0bea13f574b73cfb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a57d9cf6cf653fbdec6fe5aa18a550af3f4935fc391583f0bea13f574b73cfb5", kill_on_drop: false }`
[INFO] [stdout] a57d9cf6cf653fbdec6fe5aa18a550af3f4935fc391583f0bea13f574b73cfb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b7c6ed25e2c9aadd803ec8fc8fab8c592f19c6bce99054343a33f5002b58d387
[INFO] running `Command { std: "docker" "start" "-a" "b7c6ed25e2c9aadd803ec8fc8fab8c592f19c6bce99054343a33f5002b58d387", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.22
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling streamtools v0.7.5 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling async-stream-impl v0.3.5
[INFO] [stderr]     Checking async-stream v0.3.5
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tokio-util v0.7.10
[INFO] [stderr]     Checking tokio-stream v0.1.15
[INFO] [stderr]     Checking tokio-test v0.4.4
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stdout] warning: the item `StreamExt` is imported redundantly
[INFO] [stdout]    --> src/sample.rs:132:36
[INFO] [stdout]     |
[INFO] [stdout] 132 |     use futures::{stream, SinkExt, StreamExt};
[INFO] [stdout]     |                                    ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     use super::*;
[INFO] [stdout]     |         -------- the item `StreamExt` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.33s
[INFO] running `Command { std: "docker" "inspect" "b7c6ed25e2c9aadd803ec8fc8fab8c592f19c6bce99054343a33f5002b58d387", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7c6ed25e2c9aadd803ec8fc8fab8c592f19c6bce99054343a33f5002b58d387", kill_on_drop: false }`
[INFO] [stdout] b7c6ed25e2c9aadd803ec8fc8fab8c592f19c6bce99054343a33f5002b58d387