[INFO] cloning repository https://github.com/nguquen/blockchain_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nguquen/blockchain_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnguquen%2Fblockchain_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnguquen%2Fblockchain_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b4f1c8ee07db6714d93fab22a008072d38a7f1b2
[INFO] checking nguquen/blockchain_rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnguquen%2Fblockchain_rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nguquen/blockchain_rust 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/nguquen/blockchain_rust
[INFO] finished tweaking git repo https://github.com/nguquen/blockchain_rust
[INFO] tweaked toml for git repo https://github.com/nguquen/blockchain_rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nguquen/blockchain_rust 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]     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] 895ce03ac457cc0ae40e9d0e8cde3af0924bbbc85282c298139a6c07abdc3431
[INFO] running `Command { std: "docker" "start" "-a" "895ce03ac457cc0ae40e9d0e8cde3af0924bbbc85282c298139a6c07abdc3431", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "895ce03ac457cc0ae40e9d0e8cde3af0924bbbc85282c298139a6c07abdc3431", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "895ce03ac457cc0ae40e9d0e8cde3af0924bbbc85282c298139a6c07abdc3431", kill_on_drop: false }`
[INFO] [stdout] 895ce03ac457cc0ae40e9d0e8cde3af0924bbbc85282c298139a6c07abdc3431
[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] 0af04ff163650f3bbfb58bfd363acd2b42f42e1e75f4c0189f5585d2fba65bc6
[INFO] running `Command { std: "docker" "start" "-a" "0af04ff163650f3bbfb58bfd363acd2b42f42e1e75f4c0189f5585d2fba65bc6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling pkg-config v0.3.20
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]    Compiling num-bigint v0.4.2
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking instant v0.1.11
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling openssl-sys v0.9.67
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking sled v0.34.7
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]     Checking crypto-hash v0.3.4
[INFO] [stderr]     Checking structopt v0.3.23
[INFO] [stderr]     Checking serde v1.0.130
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking blockchain_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.45s
[INFO] running `Command { std: "docker" "inspect" "0af04ff163650f3bbfb58bfd363acd2b42f42e1e75f4c0189f5585d2fba65bc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0af04ff163650f3bbfb58bfd363acd2b42f42e1e75f4c0189f5585d2fba65bc6", kill_on_drop: false }`
[INFO] [stdout] 0af04ff163650f3bbfb58bfd363acd2b42f42e1e75f4c0189f5585d2fba65bc6
[INFO] checking nguquen/blockchain_rust against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnguquen%2Fblockchain_rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nguquen/blockchain_rust 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/nguquen/blockchain_rust
[INFO] finished tweaking git repo https://github.com/nguquen/blockchain_rust
[INFO] tweaked toml for git repo https://github.com/nguquen/blockchain_rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/nguquen/blockchain_rust 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-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] 3f131e5956e8453284b388bae7479b9582b556606dae56f89a591768ae3f20ce
[INFO] running `Command { std: "docker" "start" "-a" "3f131e5956e8453284b388bae7479b9582b556606dae56f89a591768ae3f20ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f131e5956e8453284b388bae7479b9582b556606dae56f89a591768ae3f20ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f131e5956e8453284b388bae7479b9582b556606dae56f89a591768ae3f20ce", kill_on_drop: false }`
[INFO] [stdout] 3f131e5956e8453284b388bae7479b9582b556606dae56f89a591768ae3f20ce
[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] f87cb7fc63f54f5d9222a4f21a7adadb2e9eb41edafea571cbb05c7202a99f61
[INFO] running `Command { std: "docker" "start" "-a" "f87cb7fc63f54f5d9222a4f21a7adadb2e9eb41edafea571cbb05c7202a99f61", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling pkg-config v0.3.20
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]    Compiling num-bigint v0.4.2
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking instant v0.1.11
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling openssl-sys v0.9.67
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking sled v0.34.7
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]     Checking crypto-hash v0.3.4
[INFO] [stderr]     Checking structopt v0.3.23
[INFO] [stderr]     Checking serde v1.0.130
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking blockchain_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.63s
[INFO] running `Command { std: "docker" "inspect" "f87cb7fc63f54f5d9222a4f21a7adadb2e9eb41edafea571cbb05c7202a99f61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f87cb7fc63f54f5d9222a4f21a7adadb2e9eb41edafea571cbb05c7202a99f61", kill_on_drop: false }`
[INFO] [stdout] f87cb7fc63f54f5d9222a4f21a7adadb2e9eb41edafea571cbb05c7202a99f61