[INFO] cloning repository https://github.com/fabricio7p/rusducer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fabricio7p/rusducer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffabricio7p%2Frusducer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffabricio7p%2Frusducer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 991b92cdab75a72d99ff4f5c71020aabd1c8fbfc
[INFO] checking fabricio7p/rusducer against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffabricio7p%2Frusducer" "/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/fabricio7p/rusducer 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/fabricio7p/rusducer
[INFO] finished tweaking git repo https://github.com/fabricio7p/rusducer
[INFO] tweaked toml for git repo https://github.com/fabricio7p/rusducer written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/fabricio7p/rusducer 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 colour v0.6.0
[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] f101e0d55dd81bfec8fc3e790eb8fa253028520b5649bad291646d19016eb4b9
[INFO] running `Command { std: "docker" "start" "-a" "f101e0d55dd81bfec8fc3e790eb8fa253028520b5649bad291646d19016eb4b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f101e0d55dd81bfec8fc3e790eb8fa253028520b5649bad291646d19016eb4b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f101e0d55dd81bfec8fc3e790eb8fa253028520b5649bad291646d19016eb4b9", kill_on_drop: false }`
[INFO] [stdout] f101e0d55dd81bfec8fc3e790eb8fa253028520b5649bad291646d19016eb4b9
[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] 702b393c3b9a2974a0295b02460ffcb23336e364eba77b67461571191e31edca
[INFO] running `Command { std: "docker" "start" "-a" "702b393c3b9a2974a0295b02460ffcb23336e364eba77b67461571191e31edca", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]     Checking fs_extra v1.2.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking crossterm v0.19.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking colour v0.6.0
[INFO] [stderr]     Checking nanoid v0.4.0
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking rusducer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::action::Action`
[INFO] [stdout]  --> src/core.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::action::Action;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::action::Action`
[INFO] [stdout]  --> src/core.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::action::Action;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/action.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Undefined(String),
[INFO] [stdout]   |     --------- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Undefined(()),
[INFO] [stdout]   |               ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `command` and `side_effect` are never read
[INFO] [stdout]   --> src/config/mod.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct ActionSpec {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub command: Option<String>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 23 |     pub side_effect: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ActionSpec` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `dry` is never read
[INFO] [stdout]  --> src/core.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Core<'runtime> {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 9 |     dry: bool,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/action.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Undefined(String),
[INFO] [stdout]   |     --------- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Undefined(()),
[INFO] [stdout]   |               ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `command` and `side_effect` are never read
[INFO] [stdout]   --> src/config/mod.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct ActionSpec {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub command: Option<String>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 23 |     pub side_effect: Option<String>,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ActionSpec` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `dry` is never read
[INFO] [stdout]  --> src/core.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Core<'runtime> {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 9 |     dry: bool,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.50s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: fs_extra v1.2.0
[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" "702b393c3b9a2974a0295b02460ffcb23336e364eba77b67461571191e31edca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "702b393c3b9a2974a0295b02460ffcb23336e364eba77b67461571191e31edca", kill_on_drop: false }`
[INFO] [stdout] 702b393c3b9a2974a0295b02460ffcb23336e364eba77b67461571191e31edca