[INFO] cloning repository https://github.com/TotalKrill/snet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TotalKrill/snet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTotalKrill%2Fsnet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTotalKrill%2Fsnet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 301ab81fa3ef5d6de4ce10fe7dc75dcdfad29a0f
[INFO] checking TotalKrill/snet against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTotalKrill%2Fsnet" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TotalKrill/snet 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/TotalKrill/snet
[INFO] finished tweaking git repo https://github.com/TotalKrill/snet
[INFO] tweaked toml for git repo https://github.com/TotalKrill/snet written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/TotalKrill/snet 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] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded utf8-ranges v1.0.1
[INFO] [stderr]   Downloaded memchr v2.1.0
[INFO] [stderr]   Downloaded aho-corasick v0.6.8
[INFO] [stderr]   Downloaded lazy_static v1.1.0
[INFO] [stderr]   Downloaded atomic-option v0.1.2
[INFO] [stderr]   Downloaded mach v0.0.5
[INFO] [stderr]   Downloaded smallvec v0.6.5
[INFO] [stderr]   Downloaded rand v0.4.3
[INFO] [stderr]   Downloaded libc v0.2.43
[INFO] [stderr]   Downloaded clap v2.32.0
[INFO] [stderr]   Downloaded bus v2.0.0
[INFO] [stderr]   Downloaded strsim v0.7.0
[INFO] [stderr]   Downloaded textwrap v0.10.0
[INFO] [stderr]   Downloaded bitflags v0.9.1
[INFO] [stderr]   Downloaded pkg-config v0.3.14
[INFO] [stderr]   Downloaded bytes v0.4.10
[INFO] [stderr]   Downloaded serialport v3.0.0
[INFO] [stderr]   Downloaded byteorder v1.2.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 98d06442552108ab5d7d363455c1da1ddb770a682424ce169e627bceee36a3eb
[INFO] running `Command { std: "docker" "start" "-a" "98d06442552108ab5d7d363455c1da1ddb770a682424ce169e627bceee36a3eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98d06442552108ab5d7d363455c1da1ddb770a682424ce169e627bceee36a3eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98d06442552108ab5d7d363455c1da1ddb770a682424ce169e627bceee36a3eb", kill_on_drop: false }`
[INFO] [stdout] 98d06442552108ab5d7d363455c1da1ddb770a682424ce169e627bceee36a3eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] da7aa25e85765e3fc407f64ce1c62283da98755aadc4e5e5fb3d2ecd11cb9753
[INFO] running `Command { std: "docker" "start" "-a" "da7aa25e85765e3fc407f64ce1c62283da98755aadc4e5e5fb3d2ecd11cb9753", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking atomic-option v0.1.2
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking bytes v0.4.10
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking bus v2.0.0
[INFO] [stderr]     Checking serialport v3.0.0
[INFO] [stderr]     Checking snet v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `mpsc` is imported redundantly
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::sync::mpsc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 | use std::sync::*;
[INFO] [stdout]    |     ------------ the item `mpsc` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]   --> src/main.rs:15:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::io::prelude::*;
[INFO] [stdout]    |     ------------------- the item `Write` is already imported here
[INFO] [stdout] 14 | use std::sync::mpsc;
[INFO] [stdout] 15 | use std::io::{self, Write};
[INFO] [stdout]    |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mpsc` is imported redundantly
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::sync::mpsc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 | use std::sync::*;
[INFO] [stdout]    |     ------------ the item `mpsc` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]   --> src/main.rs:15:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::io::prelude::*;
[INFO] [stdout]    |     ------------------- the item `Write` is already imported here
[INFO] [stdout] 14 | use std::sync::mpsc;
[INFO] [stdout] 15 | use std::io::{self, Write};
[INFO] [stdout]    |                     ^^^^^
[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 7.73s
[INFO] running `Command { std: "docker" "inspect" "da7aa25e85765e3fc407f64ce1c62283da98755aadc4e5e5fb3d2ecd11cb9753", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da7aa25e85765e3fc407f64ce1c62283da98755aadc4e5e5fb3d2ecd11cb9753", kill_on_drop: false }`
[INFO] [stdout] da7aa25e85765e3fc407f64ce1c62283da98755aadc4e5e5fb3d2ecd11cb9753
[INFO] checking TotalKrill/snet against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTotalKrill%2Fsnet" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TotalKrill/snet 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/TotalKrill/snet
[INFO] finished tweaking git repo https://github.com/TotalKrill/snet
[INFO] tweaked toml for git repo https://github.com/TotalKrill/snet written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/TotalKrill/snet 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] f49e7344dd5d8329be096f9e17b7f13b4147a276c42ea705afbd25810fbc3bd4
[INFO] running `Command { std: "docker" "start" "-a" "f49e7344dd5d8329be096f9e17b7f13b4147a276c42ea705afbd25810fbc3bd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f49e7344dd5d8329be096f9e17b7f13b4147a276c42ea705afbd25810fbc3bd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f49e7344dd5d8329be096f9e17b7f13b4147a276c42ea705afbd25810fbc3bd4", kill_on_drop: false }`
[INFO] [stdout] f49e7344dd5d8329be096f9e17b7f13b4147a276c42ea705afbd25810fbc3bd4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 47dcd7e53cfd4150c9fac0686d68d7041ef39e66757088cdeb45cc5d1795a810
[INFO] running `Command { std: "docker" "start" "-a" "47dcd7e53cfd4150c9fac0686d68d7041ef39e66757088cdeb45cc5d1795a810", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling nix v0.10.0
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking atomic-option v0.1.2
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking bytes v0.4.10
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking bus v2.0.0
[INFO] [stderr]     Checking serialport v3.0.0
[INFO] [stderr]     Checking snet v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `mpsc` is imported redundantly
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::sync::mpsc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 | use std::sync::*;
[INFO] [stdout]    |     ------------ the item `mpsc` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]   --> src/main.rs:15:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::io::prelude::*;
[INFO] [stdout]    |     ------------------- the item `Write` is already imported here
[INFO] [stdout] 14 | use std::sync::mpsc;
[INFO] [stdout] 15 | use std::io::{self, Write};
[INFO] [stdout]    |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mpsc` is imported redundantly
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::sync::mpsc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 | use std::sync::*;
[INFO] [stdout]    |     ------------ the item `mpsc` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]   --> src/main.rs:15:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::io::prelude::*;
[INFO] [stdout]    |     ------------------- the item `Write` is already imported here
[INFO] [stdout] 14 | use std::sync::mpsc;
[INFO] [stdout] 15 | use std::io::{self, Write};
[INFO] [stdout]    |                     ^^^^^
[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 8.83s
[INFO] running `Command { std: "docker" "inspect" "47dcd7e53cfd4150c9fac0686d68d7041ef39e66757088cdeb45cc5d1795a810", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47dcd7e53cfd4150c9fac0686d68d7041ef39e66757088cdeb45cc5d1795a810", kill_on_drop: false }`
[INFO] [stdout] 47dcd7e53cfd4150c9fac0686d68d7041ef39e66757088cdeb45cc5d1795a810