[INFO] cloning repository https://github.com/InfraOrder/walmate
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/InfraOrder/walmate" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FInfraOrder%2Fwalmate", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FInfraOrder%2Fwalmate'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5df9bbc0ff1fa6e62c0fecabe22890052ce7f40b
[INFO] checking InfraOrder/walmate against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FInfraOrder%2Fwalmate" "/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/InfraOrder/walmate 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/InfraOrder/walmate
[INFO] finished tweaking git repo https://github.com/InfraOrder/walmate
[INFO] tweaked toml for git repo https://github.com/InfraOrder/walmate written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/InfraOrder/walmate 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 color-convert v0.1.0
[INFO] [stderr]   Downloaded dtoa v0.4.4
[INFO] [stderr]   Downloaded serde_yaml v0.8.11
[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] c506fe83f02d54de2958b309d704e2e0b2cdac6370d0f6d944f8155ea5dfca29
[INFO] running `Command { std: "docker" "start" "-a" "c506fe83f02d54de2958b309d704e2e0b2cdac6370d0f6d944f8155ea5dfca29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c506fe83f02d54de2958b309d704e2e0b2cdac6370d0f6d944f8155ea5dfca29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c506fe83f02d54de2958b309d704e2e0b2cdac6370d0f6d944f8155ea5dfca29", kill_on_drop: false }`
[INFO] [stdout] c506fe83f02d54de2958b309d704e2e0b2cdac6370d0f6d944f8155ea5dfca29
[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] e2ae04bc006c0642c6d11211aa07e2b61076fa58b28b945ebe3c1beb3821aad6
[INFO] running `Command { std: "docker" "start" "-a" "e2ae04bc006c0642c6d11211aa07e2b61076fa58b28b945ebe3c1beb3821aad6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking dtoa v0.4.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking futures v0.1.29
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking color-convert v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]     Checking serde_yaml v0.8.11
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking walmate v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `out`
[INFO] [stdout]   --> src/util.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |             let out = String::from_utf8_lossy(&complete_out);
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_out`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `verbose` is never read
[INFO] [stdout]   --> src/settings.rs:31:7
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Settings {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 31 |   pub verbose: bool,
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Settings` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `out`
[INFO] [stdout]   --> src/util.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |             let out = String::from_utf8_lossy(&complete_out);
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_out`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `verbose` is never read
[INFO] [stdout]   --> src/settings.rs:31:7
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Settings {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 31 |   pub verbose: bool,
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Settings` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.84s
[INFO] running `Command { std: "docker" "inspect" "e2ae04bc006c0642c6d11211aa07e2b61076fa58b28b945ebe3c1beb3821aad6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2ae04bc006c0642c6d11211aa07e2b61076fa58b28b945ebe3c1beb3821aad6", kill_on_drop: false }`
[INFO] [stdout] e2ae04bc006c0642c6d11211aa07e2b61076fa58b28b945ebe3c1beb3821aad6