[INFO] cloning repository https://github.com/hayatoito/serval
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hayatoito/serval" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhayatoito%2Fserval", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhayatoito%2Fserval'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ff620977df2e01929adf6441d4f50b1ef5a98014
[INFO] checking hayatoito/serval against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhayatoito%2Fserval" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hayatoito/serval 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/hayatoito/serval
[INFO] finished tweaking git repo https://github.com/hayatoito/serval
[INFO] tweaked toml for git repo https://github.com/hayatoito/serval written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hayatoito/serval 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 ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 02dda022cd8b71b99baa64b4670517719c85c99fc8d52ecec11ed77c8439dc52
[INFO] running `Command { std: "docker" "start" "-a" "02dda022cd8b71b99baa64b4670517719c85c99fc8d52ecec11ed77c8439dc52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02dda022cd8b71b99baa64b4670517719c85c99fc8d52ecec11ed77c8439dc52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02dda022cd8b71b99baa64b4670517719c85c99fc8d52ecec11ed77c8439dc52", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 3cd9b82b04e9b649cfc23bfe74f039f0253ee60332fc31b003d63b7d1ce93849
[INFO] running `Command { std: "docker" "start" "-a" "3cd9b82b04e9b649cfc23bfe74f039f0253ee60332fc31b003d63b7d1ce93849", kill_on_drop: false }`
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[INFO] [stderr]     Checking loggerv v0.7.1
[INFO] [stderr]     Checking gif v0.10.0
[INFO] [stderr]     Checking maplit v1.0.1
[INFO] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking combine v3.6.6
[INFO] [stderr]     Checking ordered-float v1.0.1
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking url v1.7.1
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking hyper v0.10.13
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]     Checking iron v0.6.0
[INFO] [stderr]     Checking logger v0.4.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking structopt v0.2.14
[INFO] [stderr]     Checking serval v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `char` is imported redundantly
[INFO] [stdout]  --> src/css/parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use combine::parser::char;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 5 | use combine::*;
[INFO] [stdout]   |     ---------- the item `char` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `char` is imported redundantly
[INFO] [stdout]  --> src/css/parser.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use combine::parser::char;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 5 | use combine::*;
[INFO] [stdout]   |     ---------- the item `char` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/prelude.rs:34:61
[INFO] [stdout]     |
[INFO] [stdout] 34  |           assert_eq!($parser.parse($input), Ok(($output, "")));
[INFO] [stdout]     |                                                               ^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/css/parser.rs:351:9
[INFO] [stdout]     |
[INFO] [stdout] 351 | /         assert_parse!(
[INFO] [stdout] 352 | |             parser::simple_selector(),
[INFO] [stdout] 353 | |             "*#foo",
[INFO] [stdout] 354 | |             SimpleSelector {
[INFO] [stdout] ...   |
[INFO] [stdout] 357 | |             }
[INFO] [stdout] 358 | |         )
[INFO] [stdout]     | |_________- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `assert_parse`
[INFO] [stdout]     = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `assert_parse` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Parser` is imported redundantly
[INFO] [stdout]    --> src/dom/parser.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |     use super::*;
[INFO] [stdout]     |         -------- the item `Parser` is already imported here
[INFO] [stdout] 111 |
[INFO] [stdout] 112 |     use combine::Parser;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `css` is imported redundantly
[INFO] [stdout]    --> src/layout.rs:455:9
[INFO] [stdout]     |
[INFO] [stdout] 454 |     use super::*;
[INFO] [stdout]     |         -------- the item `css` is already imported here
[INFO] [stdout] 455 |     use crate::css;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `StyledNode` is imported redundantly
[INFO] [stdout]    --> src/layout.rs:458:9
[INFO] [stdout]     |
[INFO] [stdout] 454 |     use super::*;
[INFO] [stdout]     |         -------- the item `StyledNode` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 458 |     use crate::style::StyledNode;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `css` is imported redundantly
[INFO] [stdout]    --> src/style.rs:141:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     use super::*;
[INFO] [stdout]     |         -------- the item `css` is already imported here
[INFO] [stdout] 141 |     use crate::css;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dom` is imported redundantly
[INFO] [stdout]    --> src/style.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     use super::*;
[INFO] [stdout]     |         -------- the item `dom` is already imported here
[INFO] [stdout] 141 |     use crate::css;
[INFO] [stdout] 142 |     use crate::dom;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `failure` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use failure;
[INFO] [stdout]   |     ^^^^^^^ the item `failure` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `loggerv` is imported redundantly
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use loggerv;
[INFO] [stdout]   |     ^^^^^^^ the item `loggerv` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serval` is imported redundantly
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serval;
[INFO] [stdout]   |     ^^^^^^ the item `serval` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `failure` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use failure;
[INFO] [stdout]   |     ^^^^^^^ the item `failure` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `loggerv` is imported redundantly
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use loggerv;
[INFO] [stdout]   |     ^^^^^^^ the item `loggerv` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serval` is imported redundantly
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serval;
[INFO] [stdout]   |     ^^^^^^ the item `serval` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.70s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: serval v0.1.0 (/opt/rustwide/workdir), syn v0.14.4, traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "3cd9b82b04e9b649cfc23bfe74f039f0253ee60332fc31b003d63b7d1ce93849", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cd9b82b04e9b649cfc23bfe74f039f0253ee60332fc31b003d63b7d1ce93849", kill_on_drop: false }`
[INFO] [stdout] 3cd9b82b04e9b649cfc23bfe74f039f0253ee60332fc31b003d63b7d1ce93849