[INFO] fetching crate sozu 0.15.17...
[INFO] checking sozu-0.15.17 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate sozu 0.15.17 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate sozu 0.15.17 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 sozu 0.15.17
[INFO] finished tweaking crates.io crate sozu 0.15.17
[INFO] tweaked toml for crates.io crate sozu 0.15.17 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate sozu 0.15.17 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 asn1-rs-derive v0.4.0
[INFO] [stderr]   Downloaded asn1-rs v0.5.2
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[INFO] [stderr]   Downloaded sozu-command-lib v0.15.17
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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] e9fcd926adf40449ec90f5c31ac60d4ba2fe71a752eb0ee150b3eba09047df3e
[INFO] running `Command { std: "docker" "start" "-a" "e9fcd926adf40449ec90f5c31ac60d4ba2fe71a752eb0ee150b3eba09047df3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9fcd926adf40449ec90f5c31ac60d4ba2fe71a752eb0ee150b3eba09047df3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9fcd926adf40449ec90f5c31ac60d4ba2fe71a752eb0ee150b3eba09047df3e", kill_on_drop: false }`
[INFO] [stdout] e9fcd926adf40449ec90f5c31ac60d4ba2fe71a752eb0ee150b3eba09047df3e
[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] eb945956e9d4d88d4f75b760a193d934878f21dd3eaa435923ee115a91b7ae16
[INFO] running `Command { std: "docker" "start" "-a" "eb945956e9d4d88d4f75b760a193d934878f21dd3eaa435923ee115a91b7ae16", kill_on_drop: false }`
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[INFO] [stdout] warning: the item `anyhow` is imported redundantly
[INFO] [stdout]  --> src/ctl/command.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{self, bail, Context};
[INFO] [stdout]   |              ^^^^ the item `anyhow` 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 `anyhow` is imported redundantly
[INFO] [stdout]  --> src/ctl/display.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | use anyhow::{self, Context};
[INFO] [stdout]   |              ^^^^ the item `anyhow` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/upgrade.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | use libc::{self, pid_t};
[INFO] [stdout]    |            ^^^^ the item `libc` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/worker.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | use libc::{self, pid_t};
[INFO] [stdout]    |            ^^^^ the item `libc` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nix` is imported redundantly
[INFO] [stdout]   --> src/worker.rs:23:11
[INFO] [stdout]    |
[INFO] [stdout] 23 | use nix::{self, unistd::*};
[INFO] [stdout]    |           ^^^^ the item `nix` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Pid` is imported redundantly
[INFO] [stdout]   --> src/worker.rs:24:30
[INFO] [stdout]    |
[INFO] [stdout] 23 | use nix::{self, unistd::*};
[INFO] [stdout]    |                 --------- the item `Pid` is already imported here
[INFO] [stdout] 24 | use nix::{sys::signal::kill, unistd::Pid};
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `anyhow` is imported redundantly
[INFO] [stdout]  --> src/ctl/command.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{self, bail, Context};
[INFO] [stdout]   |              ^^^^ the item `anyhow` 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 `anyhow` is imported redundantly
[INFO] [stdout]  --> src/ctl/display.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | use anyhow::{self, Context};
[INFO] [stdout]   |              ^^^^ the item `anyhow` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/upgrade.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | use libc::{self, pid_t};
[INFO] [stdout]    |            ^^^^ the item `libc` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `libc` is imported redundantly
[INFO] [stdout]   --> src/worker.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | use libc::{self, pid_t};
[INFO] [stdout]    |            ^^^^ the item `libc` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nix` is imported redundantly
[INFO] [stdout]   --> src/worker.rs:23:11
[INFO] [stdout]    |
[INFO] [stdout] 23 | use nix::{self, unistd::*};
[INFO] [stdout]    |           ^^^^ the item `nix` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Pid` is imported redundantly
[INFO] [stdout]   --> src/worker.rs:24:30
[INFO] [stdout]    |
[INFO] [stdout] 23 | use nix::{self, unistd::*};
[INFO] [stdout]    |                 --------- the item `Pid` is already imported here
[INFO] [stdout] 24 | use nix::{sys::signal::kill, unistd::Pid};
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WorkerStatus` is never constructed
[INFO] [stdout]   --> src/ctl/command.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct WorkerStatus<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WorkerStatus` is never constructed
[INFO] [stdout]   --> src/ctl/command.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct WorkerStatus<'a> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3m 57s
[INFO] running `Command { std: "docker" "inspect" "eb945956e9d4d88d4f75b760a193d934878f21dd3eaa435923ee115a91b7ae16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb945956e9d4d88d4f75b760a193d934878f21dd3eaa435923ee115a91b7ae16", kill_on_drop: false }`
[INFO] [stdout] eb945956e9d4d88d4f75b760a193d934878f21dd3eaa435923ee115a91b7ae16