[INFO] fetching crate kill-desktop 0.3.4...
[INFO] checking kill-desktop-0.3.4 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate kill-desktop 0.3.4 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate kill-desktop 0.3.4 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 kill-desktop 0.3.4
[INFO] finished tweaking crates.io crate kill-desktop 0.3.4
[INFO] tweaked toml for crates.io crate kill-desktop 0.3.4 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate kill-desktop 0.3.4 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 rustc-demangle v0.1.16
[INFO] [stderr]   Downloaded terminal_size v0.1.10
[INFO] [stderr]   Downloaded failure v0.1.6
[INFO] [stderr]   Downloaded proc-macro2 v1.0.8
[INFO] [stderr]   Downloaded backtrace v0.3.44
[INFO] [stderr]   Downloaded xcb v0.9.0
[INFO] [stderr]   Downloaded syn v1.0.15
[INFO] [stderr]   Downloaded backtrace-sys v0.1.32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f7b21c59d1bbbb1b2b244fc5862ad9514af598868a4877270110a573b550570b
[INFO] running `Command { std: "docker" "start" "-a" "f7b21c59d1bbbb1b2b244fc5862ad9514af598868a4877270110a573b550570b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7b21c59d1bbbb1b2b244fc5862ad9514af598868a4877270110a573b550570b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7b21c59d1bbbb1b2b244fc5862ad9514af598868a4877270110a573b550570b", kill_on_drop: false }`
[INFO] [stdout] f7b21c59d1bbbb1b2b244fc5862ad9514af598868a4877270110a573b550570b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 03e2df438e7ab0983e0dedadebf51ee90b331ea2b75c68d97802085c9c205bf4
[INFO] running `Command { std: "docker" "start" "-a" "03e2df438e7ab0983e0dedadebf51ee90b331ea2b75c68d97802085c9c205bf4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling syn v1.0.15
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking terminal_size v0.1.10
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking kill-desktop v0.3.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `dirs` is imported redundantly
[INFO] [stdout]  --> src/config.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use dirs;
[INFO] [stdout]   |     ^^^^ the item `dirs` 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 `regex` is imported redundantly
[INFO] [stdout]   --> src/config.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use regex;
[INFO] [stdout]    |     ^^^^^ the item `regex` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `toml` is imported redundantly
[INFO] [stdout]   --> src/config.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use toml;
[INFO] [stdout]    |     ^^^^ the item `toml` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `xcb` is imported redundantly
[INFO] [stdout]  --> src/x.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use xcb;
[INFO] [stdout]   |     ^^^ the item `xcb` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dirs` is imported redundantly
[INFO] [stdout]  --> src/config.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use dirs;
[INFO] [stdout]   |     ^^^^ the item `dirs` 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 `regex` is imported redundantly
[INFO] [stdout]   --> src/config.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use regex;
[INFO] [stdout]    |     ^^^^^ the item `regex` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `toml` is imported redundantly
[INFO] [stdout]   --> src/config.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use toml;
[INFO] [stdout]    |     ^^^^ the item `toml` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `xcb` is imported redundantly
[INFO] [stdout]  --> src/x.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use xcb;
[INFO] [stdout]   |     ^^^ the item `xcb` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PidInfo` is never constructed
[INFO] [stdout]   --> src/main.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct PidInfo {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PidInfo` is never constructed
[INFO] [stdout]   --> src/main.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct PidInfo {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.72s
[INFO] running `Command { std: "docker" "inspect" "03e2df438e7ab0983e0dedadebf51ee90b331ea2b75c68d97802085c9c205bf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03e2df438e7ab0983e0dedadebf51ee90b331ea2b75c68d97802085c9c205bf4", kill_on_drop: false }`
[INFO] [stdout] 03e2df438e7ab0983e0dedadebf51ee90b331ea2b75c68d97802085c9c205bf4
[INFO] checking kill-desktop-0.3.4 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate kill-desktop 0.3.4 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate kill-desktop 0.3.4 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 kill-desktop 0.3.4
[INFO] finished tweaking crates.io crate kill-desktop 0.3.4
[INFO] tweaked toml for crates.io crate kill-desktop 0.3.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate kill-desktop 0.3.4 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] aafffe3f7f0fa91e02e8affc533693bc952e8d25aef64c7342162255d5aae5b5
[INFO] running `Command { std: "docker" "start" "-a" "aafffe3f7f0fa91e02e8affc533693bc952e8d25aef64c7342162255d5aae5b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aafffe3f7f0fa91e02e8affc533693bc952e8d25aef64c7342162255d5aae5b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aafffe3f7f0fa91e02e8affc533693bc952e8d25aef64c7342162255d5aae5b5", kill_on_drop: false }`
[INFO] [stdout] aafffe3f7f0fa91e02e8affc533693bc952e8d25aef64c7342162255d5aae5b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] fe4c9e97d9faa19afc09541e029fbcf423d32a02e29a25805188d3c6247fcd3d
[INFO] running `Command { std: "docker" "start" "-a" "fe4c9e97d9faa19afc09541e029fbcf423d32a02e29a25805188d3c6247fcd3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling syn v1.0.15
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking terminal_size v0.1.10
[INFO] [stderr]     Checking backtrace v0.3.44
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking kill-desktop v0.3.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `dirs` is imported redundantly
[INFO] [stdout]  --> src/config.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use dirs;
[INFO] [stdout]   |     ^^^^ the item `dirs` 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 `regex` is imported redundantly
[INFO] [stdout]   --> src/config.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use regex;
[INFO] [stdout]    |     ^^^^^ the item `regex` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `toml` is imported redundantly
[INFO] [stdout]   --> src/config.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use toml;
[INFO] [stdout]    |     ^^^^ the item `toml` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `xcb` is imported redundantly
[INFO] [stdout]  --> src/x.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use xcb;
[INFO] [stdout]   |     ^^^ the item `xcb` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `dirs` is imported redundantly
[INFO] [stdout]  --> src/config.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use dirs;
[INFO] [stdout]   |     ^^^^ the item `dirs` 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 `regex` is imported redundantly
[INFO] [stdout]   --> src/config.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use regex;
[INFO] [stdout]    |     ^^^^^ the item `regex` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `toml` is imported redundantly
[INFO] [stdout]   --> src/config.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use toml;
[INFO] [stdout]    |     ^^^^ the item `toml` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `xcb` is imported redundantly
[INFO] [stdout]  --> src/x.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use xcb;
[INFO] [stdout]   |     ^^^ the item `xcb` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PidInfo` is never constructed
[INFO] [stdout]   --> src/main.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct PidInfo {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PidInfo` is never constructed
[INFO] [stdout]   --> src/main.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct PidInfo {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.45s
[INFO] running `Command { std: "docker" "inspect" "fe4c9e97d9faa19afc09541e029fbcf423d32a02e29a25805188d3c6247fcd3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe4c9e97d9faa19afc09541e029fbcf423d32a02e29a25805188d3c6247fcd3d", kill_on_drop: false }`
[INFO] [stdout] fe4c9e97d9faa19afc09541e029fbcf423d32a02e29a25805188d3c6247fcd3d