[INFO] fetching crate chunked-bytes 0.3.0...
[INFO] checking chunked-bytes-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate chunked-bytes 0.3.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate chunked-bytes 0.3.0 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 chunked-bytes 0.3.0
[INFO] finished tweaking crates.io crate chunked-bytes 0.3.0
[INFO] tweaked toml for crates.io crate chunked-bytes 0.3.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate chunked-bytes 0.3.0 already has a lockfile, it will not be regenerated
[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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-macros v1.0.0
[INFO] [stderr]   Downloaded futures-core v0.3.12
[INFO] [stderr]   Downloaded futures-io v0.3.12
[INFO] [stderr]   Downloaded futures-sink v0.3.12
[INFO] [stderr]   Downloaded generic-tests v0.1.1
[INFO] [stderr]   Downloaded futures-channel v0.3.12
[INFO] [stderr]   Downloaded futures v0.3.12
[INFO] [stderr]   Downloaded bytes v1.0.1
[INFO] [stderr]   Downloaded futures-util v0.3.12
[INFO] [stderr]   Downloaded libc v0.2.83
[INFO] [stderr]   Downloaded tokio v1.1.0
[INFO] [stderr]   Downloaded syn v1.0.60
[INFO] [stderr]   Downloaded pin-project v1.0.4
[INFO] [stderr]   Downloaded pin-project-internal v1.0.4
[INFO] [stderr]   Downloaded quote v1.0.8
[INFO] [stderr]   Downloaded futures-task v0.3.12
[INFO] [stderr]   Downloaded pin-project-lite v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] dee129c6839fae23ca2e30eb4d0fdfe7aadcae8553b792d07dca3d52dd768186
[INFO] running `Command { std: "docker" "start" "-a" "dee129c6839fae23ca2e30eb4d0fdfe7aadcae8553b792d07dca3d52dd768186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dee129c6839fae23ca2e30eb4d0fdfe7aadcae8553b792d07dca3d52dd768186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dee129c6839fae23ca2e30eb4d0fdfe7aadcae8553b792d07dca3d52dd768186", kill_on_drop: false }`
[INFO] [stdout] dee129c6839fae23ca2e30eb4d0fdfe7aadcae8553b792d07dca3d52dd768186
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3c5dc6392294d0cd86eb951b2e2b5c1aacd7cb7fee7868713a2d4aa4db415040
[INFO] running `Command { std: "docker" "start" "-a" "3c5dc6392294d0cd86eb951b2e2b5c1aacd7cb7fee7868713a2d4aa4db415040", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.83
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking futures-sink v0.3.12
[INFO] [stderr]     Checking futures-core v0.3.12
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking futures-io v0.3.12
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]    Compiling tokio v1.1.0
[INFO] [stderr]     Checking futures-task v0.3.12
[INFO] [stderr]     Checking futures-channel v0.3.12
[INFO] [stderr]     Checking chunked-bytes v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-util v0.3.12
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking futures v0.3.12
[INFO] [stderr]    Compiling pin-project-internal v1.0.4
[INFO] [stderr]    Compiling tokio-macros v1.0.0
[INFO] [stderr]    Compiling generic-tests v0.1.1
[INFO] [stderr]     Checking pin-project v1.0.4
[INFO] [stdout] warning: the item `AsyncWrite` is imported redundantly
[INFO] [stdout]  --> examples/encoder.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 | use futures::io::{self, AsyncWrite, Error, IoSlice};
[INFO] [stdout]   |                         ^^^^^^^^^^
[INFO] [stdout] 9 | use futures::prelude::*;
[INFO] [stdout]   |     ------------------- the item `AsyncWrite` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Sink` is imported redundantly
[INFO] [stdout]   --> examples/encoder.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | use futures::prelude::*;
[INFO] [stdout]    |     ------------------- the item `Sink` is already imported here
[INFO] [stdout] 10 | use futures::ready;
[INFO] [stdout] 11 | use futures::Sink;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.05s
[INFO] running `Command { std: "docker" "inspect" "3c5dc6392294d0cd86eb951b2e2b5c1aacd7cb7fee7868713a2d4aa4db415040", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c5dc6392294d0cd86eb951b2e2b5c1aacd7cb7fee7868713a2d4aa4db415040", kill_on_drop: false }`
[INFO] [stdout] 3c5dc6392294d0cd86eb951b2e2b5c1aacd7cb7fee7868713a2d4aa4db415040
[INFO] checking chunked-bytes-0.3.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate chunked-bytes 0.3.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate chunked-bytes 0.3.0 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 chunked-bytes 0.3.0
[INFO] finished tweaking crates.io crate chunked-bytes 0.3.0
[INFO] tweaked toml for crates.io crate chunked-bytes 0.3.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate chunked-bytes 0.3.0 already has a lockfile, it will not be regenerated
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] bb6bb9fd09a0b13bdb83375e5276dd166ec99d911c3143a1ce062e20d853f979
[INFO] running `Command { std: "docker" "start" "-a" "bb6bb9fd09a0b13bdb83375e5276dd166ec99d911c3143a1ce062e20d853f979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb6bb9fd09a0b13bdb83375e5276dd166ec99d911c3143a1ce062e20d853f979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb6bb9fd09a0b13bdb83375e5276dd166ec99d911c3143a1ce062e20d853f979", kill_on_drop: false }`
[INFO] [stdout] bb6bb9fd09a0b13bdb83375e5276dd166ec99d911c3143a1ce062e20d853f979
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] a7ed1a731885f439d6f0d144acecd1aeb2f6a4ba8aba19ff8399b765a59470e2
[INFO] running `Command { std: "docker" "start" "-a" "a7ed1a731885f439d6f0d144acecd1aeb2f6a4ba8aba19ff8399b765a59470e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.83
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking futures-core v0.3.12
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking futures-sink v0.3.12
[INFO] [stderr]     Checking futures-io v0.3.12
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]    Compiling tokio v1.1.0
[INFO] [stderr]     Checking futures-channel v0.3.12
[INFO] [stderr]     Checking futures-task v0.3.12
[INFO] [stderr]     Checking chunked-bytes v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-util v0.3.12
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking futures v0.3.12
[INFO] [stderr]    Compiling pin-project-internal v1.0.4
[INFO] [stderr]    Compiling tokio-macros v1.0.0
[INFO] [stderr]    Compiling generic-tests v0.1.1
[INFO] [stderr]     Checking pin-project v1.0.4
[INFO] [stdout] warning: the item `AsyncWrite` is imported redundantly
[INFO] [stdout]  --> examples/encoder.rs:8:25
[INFO] [stdout]   |
[INFO] [stdout] 8 | use futures::io::{self, AsyncWrite, Error, IoSlice};
[INFO] [stdout]   |                         ^^^^^^^^^^
[INFO] [stdout] 9 | use futures::prelude::*;
[INFO] [stdout]   |     ------------------- the item `AsyncWrite` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Sink` is imported redundantly
[INFO] [stdout]   --> examples/encoder.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | use futures::prelude::*;
[INFO] [stdout]    |     ------------------- the item `Sink` is already imported here
[INFO] [stdout] 10 | use futures::ready;
[INFO] [stdout] 11 | use futures::Sink;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.05s
[INFO] running `Command { std: "docker" "inspect" "a7ed1a731885f439d6f0d144acecd1aeb2f6a4ba8aba19ff8399b765a59470e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7ed1a731885f439d6f0d144acecd1aeb2f6a4ba8aba19ff8399b765a59470e2", kill_on_drop: false }`
[INFO] [stdout] a7ed1a731885f439d6f0d144acecd1aeb2f6a4ba8aba19ff8399b765a59470e2