[INFO] cloning repository https://github.com/almindor/blockpipe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/almindor/blockpipe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falmindor%2Fblockpipe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falmindor%2Fblockpipe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bcd1a24327d6978b549d6494065ee971f90ec5aa
[INFO] checking almindor/blockpipe against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falmindor%2Fblockpipe" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/almindor/blockpipe 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 git repo https://github.com/almindor/blockpipe
[INFO] finished tweaking git repo https://github.com/almindor/blockpipe
[INFO] tweaked toml for git repo https://github.com/almindor/blockpipe written to /workspace/builds/worker-4-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 246 packages
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.0)
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[INFO] [stderr]       Adding fallible-iterator v0.2.0 (latest: v0.3.0)
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[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 ...
[INFO] [stderr]   Downloaded web3 v0.18.0
[INFO] [stderr]   Downloaded simple-signal v1.1.1
[INFO] [stderr]   Downloaded stderrlog v0.5.4
[INFO] [stderr]   Downloaded ethabi v16.0.0
[INFO] [stderr]   Downloaded secp256k1 v0.21.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 8463777e2196a22c02cedcaafc6e70c085fc3cba100a705bcfa0938e9d2fc672
[INFO] running `Command { std: "docker" "start" "-a" "8463777e2196a22c02cedcaafc6e70c085fc3cba100a705bcfa0938e9d2fc672", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8463777e2196a22c02cedcaafc6e70c085fc3cba100a705bcfa0938e9d2fc672", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8463777e2196a22c02cedcaafc6e70c085fc3cba100a705bcfa0938e9d2fc672", kill_on_drop: false }`
[INFO] [stdout] 8463777e2196a22c02cedcaafc6e70c085fc3cba100a705bcfa0938e9d2fc672
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a7712d45217d44cb38e88c9c579db36d9c586d11cda7cab1e7b122fc5e8a31a5
[INFO] running `Command { std: "docker" "start" "-a" "a7712d45217d44cb38e88c9c579db36d9c586d11cda7cab1e7b122fc5e8a31a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
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[INFO] [stderr]    Compiling derive_more v0.99.17
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[INFO] [stderr]     Checking primitive-types v0.10.1
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[INFO] [stderr]     Checking ethabi v16.0.0
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.27
[INFO] [stderr]     Checking web3 v0.18.0
[INFO] [stderr]     Checking blockpipe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]  --> src/pipe.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `String` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `simple_signal` is imported redundantly
[INFO] [stdout]   --> src/pipe.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 | use simple_signal::{self, Signal};
[INFO] [stdout]    |                     ^^^^ the item `simple_signal` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]  --> src/pipe.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `String` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `simple_signal` is imported redundantly
[INFO] [stdout]   --> src/pipe.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 | use simple_signal::{self, Signal};
[INFO] [stdout]    |                     ^^^^ the item `simple_signal` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 45.46s
[INFO] running `Command { std: "docker" "inspect" "a7712d45217d44cb38e88c9c579db36d9c586d11cda7cab1e7b122fc5e8a31a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7712d45217d44cb38e88c9c579db36d9c586d11cda7cab1e7b122fc5e8a31a5", kill_on_drop: false }`
[INFO] [stdout] a7712d45217d44cb38e88c9c579db36d9c586d11cda7cab1e7b122fc5e8a31a5
[INFO] checking almindor/blockpipe against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falmindor%2Fblockpipe" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/almindor/blockpipe 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 git repo https://github.com/almindor/blockpipe
[INFO] finished tweaking git repo https://github.com/almindor/blockpipe
[INFO] tweaked toml for git repo https://github.com/almindor/blockpipe written to /workspace/builds/worker-4-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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5d0044105a5a77d71d81808d7aaafe095df334c47b80c9df9e8858d1d1735ef0
[INFO] running `Command { std: "docker" "start" "-a" "5d0044105a5a77d71d81808d7aaafe095df334c47b80c9df9e8858d1d1735ef0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d0044105a5a77d71d81808d7aaafe095df334c47b80c9df9e8858d1d1735ef0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d0044105a5a77d71d81808d7aaafe095df334c47b80c9df9e8858d1d1735ef0", kill_on_drop: false }`
[INFO] [stdout] 5d0044105a5a77d71d81808d7aaafe095df334c47b80c9df9e8858d1d1735ef0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a973dbb8fd0dbaca05f46fc50bcedb65fd762522cecb741101031aeae2950a4c
[INFO] running `Command { std: "docker" "start" "-a" "a973dbb8fd0dbaca05f46fc50bcedb65fd762522cecb741101031aeae2950a4c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
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[INFO] [stderr]     Checking secp256k1 v0.21.3
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[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
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[INFO] [stderr]    Compiling serde_derive v1.0.197
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[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling openssl-macros v0.1.1
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[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.2
[INFO] [stderr]    Compiling parity-scale-codec-derive v2.3.1
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking serde v1.0.197
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[INFO] [stderr]     Checking jsonrpc-core v18.0.0
[INFO] [stderr]     Checking impl-codec v0.5.1
[INFO] [stderr]     Checking primitive-types v0.10.1
[INFO] [stderr]     Checking hyper v0.14.28
[INFO] [stderr]     Checking ethereum-types v0.12.1
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[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.27
[INFO] [stderr]     Checking web3 v0.18.0
[INFO] [stderr]     Checking blockpipe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]  --> src/pipe.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `String` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `simple_signal` is imported redundantly
[INFO] [stdout]   --> src/pipe.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 | use simple_signal::{self, Signal};
[INFO] [stdout]    |                     ^^^^ the item `simple_signal` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]  --> src/pipe.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `String` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `simple_signal` is imported redundantly
[INFO] [stdout]   --> src/pipe.rs:14:21
[INFO] [stdout]    |
[INFO] [stdout] 14 | use simple_signal::{self, Signal};
[INFO] [stdout]    |                     ^^^^ the item `simple_signal` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 51.44s
[INFO] running `Command { std: "docker" "inspect" "a973dbb8fd0dbaca05f46fc50bcedb65fd762522cecb741101031aeae2950a4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a973dbb8fd0dbaca05f46fc50bcedb65fd762522cecb741101031aeae2950a4c", kill_on_drop: false }`
[INFO] [stdout] a973dbb8fd0dbaca05f46fc50bcedb65fd762522cecb741101031aeae2950a4c