[INFO] cloning repository https://github.com/Arekkusuva/try-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Arekkusuva/try-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArekkusuva%2Ftry-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArekkusuva%2Ftry-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 453065a21eca81b37b0511d5558c30272c961d5c
[INFO] checking Arekkusuva/try-rust against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArekkusuva%2Ftry-rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Arekkusuva/try-rust 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/Arekkusuva/try-rust
[INFO] finished tweaking git repo https://github.com/Arekkusuva/try-rust
[INFO] tweaked toml for git repo https://github.com/Arekkusuva/try-rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Arekkusuva/try-rust 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v0.3.6
[INFO] [stderr]   Downloaded quote v0.5.1
[INFO] [stderr]   Downloaded serde_derive_internals v0.23.1
[INFO] [stderr]   Downloaded toml v0.4.6
[INFO] [stderr]   Downloaded log4rs v0.8.0
[INFO] [stderr]   Downloaded unreachable v0.1.1
[INFO] [stderr]   Downloaded itoa v0.4.1
[INFO] [stderr]   Downloaded quick-error v1.2.1
[INFO] [stderr]   Downloaded redox_syscall v0.1.37
[INFO] [stderr]   Downloaded num-traits v0.2.2
[INFO] [stderr]   Downloaded cc v1.0.10
[INFO] [stderr]   Downloaded humantime v1.1.1
[INFO] [stderr]   Downloaded chrono v0.4.2
[INFO] [stderr]   Downloaded serde_json v1.0.15
[INFO] [stderr]   Downloaded libc v0.2.40
[INFO] [stderr]   Downloaded syn v0.13.1
[INFO] [stderr]   Downloaded yaml-rust v0.4.0
[INFO] [stderr]   Downloaded winapi v0.3.4
[INFO] [stderr]   Downloaded miniz-sys v0.1.10
[INFO] [stderr]   Downloaded flate2 v1.0.1
[INFO] [stderr]   Downloaded ordered-float v0.5.0
[INFO] [stderr]   Downloaded serde v1.0.39
[INFO] [stderr]   Downloaded serde-value v0.5.2
[INFO] [stderr]   Downloaded num-integer v0.1.36
[INFO] [stderr]   Downloaded log v0.4.1
[INFO] [stderr]   Downloaded serde_yaml v0.7.3
[INFO] [stderr]   Downloaded serde_derive v1.0.39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] a98885278b910d22d9520123061fa14d3b60638bc41a69daa175f5100c47457c
[INFO] running `Command { std: "docker" "start" "-a" "a98885278b910d22d9520123061fa14d3b60638bc41a69daa175f5100c47457c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a98885278b910d22d9520123061fa14d3b60638bc41a69daa175f5100c47457c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a98885278b910d22d9520123061fa14d3b60638bc41a69daa175f5100c47457c", kill_on_drop: false }`
[INFO] [stdout] a98885278b910d22d9520123061fa14d3b60638bc41a69daa175f5100c47457c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] eaad5f12b8373ba5a24629e4d2ef52810d913daa1caf1298b6a40c1cafe28382
[INFO] running `Command { std: "docker" "start" "-a" "eaad5f12b8373ba5a24629e4d2ef52810d913daa1caf1298b6a40c1cafe28382", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]     Checking serde v1.0.39
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]    Compiling cc v1.0.10
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]     Checking quick-error v1.2.1
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]    Compiling proc-macro2 v0.3.6
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking humantime v1.1.1
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking yaml-rust v0.4.0
[INFO] [stderr]    Compiling quote v0.5.1
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-integer v0.1.36
[INFO] [stderr]     Checking ordered-float v0.5.0
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]     Checking chrono v0.4.2
[INFO] [stderr]     Checking flate2 v1.0.1
[INFO] [stderr]    Compiling serde_derive_internals v0.23.1
[INFO] [stderr]    Compiling serde_derive v1.0.39
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking serde-value v0.5.2
[INFO] [stderr]     Checking serde_json v1.0.15
[INFO] [stderr]     Checking serde_yaml v0.7.3
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking log4rs v0.8.0
[INFO] [stderr]     Checking zoma v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/watcher.rs:28:30
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn update(&mut self, c: conf::Config) {
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `task_name`
[INFO] [stdout]   --> src/watcher.rs:33:29
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn start(&mut self, task_name: String) {
[INFO] [stdout]    |                             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_task_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `task_name`
[INFO] [stdout]   --> src/watcher.rs:38:28
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn stop(&mut self, task_name: String) {
[INFO] [stdout]    |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_task_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `task_name`
[INFO] [stdout]   --> src/watcher.rs:45:26
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn status(&self, task_name: String) -> bool {
[INFO] [stdout]    |                          ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_task_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `deferred` is never read
[INFO] [stdout]   --> src/conf.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct OnceConf {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 16 |     pub deferred: Option<bool>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OnceConf` 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: unused variable: `c`
[INFO] [stdout]   --> src/watcher.rs:28:30
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn update(&mut self, c: conf::Config) {
[INFO] [stdout]    |                              ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `task_name`
[INFO] [stdout]   --> src/watcher.rs:33:29
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn start(&mut self, task_name: String) {
[INFO] [stdout]    |                             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_task_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `task_name`
[INFO] [stdout]   --> src/watcher.rs:38:28
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn stop(&mut self, task_name: String) {
[INFO] [stdout]    |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_task_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `task_name`
[INFO] [stdout]   --> src/watcher.rs:45:26
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn status(&self, task_name: String) -> bool {
[INFO] [stdout]    |                          ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_task_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `deferred` is never read
[INFO] [stdout]   --> src/conf.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct OnceConf {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 16 |     pub deferred: Option<bool>,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OnceConf` 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: 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 11.39s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.13.1, 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" "eaad5f12b8373ba5a24629e4d2ef52810d913daa1caf1298b6a40c1cafe28382", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eaad5f12b8373ba5a24629e4d2ef52810d913daa1caf1298b6a40c1cafe28382", kill_on_drop: false }`
[INFO] [stdout] eaad5f12b8373ba5a24629e4d2ef52810d913daa1caf1298b6a40c1cafe28382