[INFO] cloning repository https://github.com/khanny17/trace
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/khanny17/trace" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhanny17%2Ftrace", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhanny17%2Ftrace'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] facc718823db015e4075b59aaf1dbb2576ffef03
[INFO] checking khanny17/trace against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhanny17%2Ftrace" "/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/khanny17/trace 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/khanny17/trace
[INFO] finished tweaking git repo https://github.com/khanny17/trace
[INFO] tweaked toml for git repo https://github.com/khanny17/trace written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/khanny17/trace 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 dtoa v0.4.2
[INFO] [stderr]   Downloaded itoa v0.4.1
[INFO] [stderr]   Downloaded serde v1.0.37
[INFO] [stderr]   Downloaded serde_yaml v0.7.3
[INFO] [stderr]   Downloaded yaml-rust v0.4.0
[INFO] [stderr]   Downloaded serde_derive_internals v0.23.0
[INFO] [stderr]   Downloaded serde_json v1.0.13
[INFO] [stderr]   Downloaded grep v0.1.8
[INFO] [stderr]   Downloaded regex-syntax v0.5.3
[INFO] [stderr]   Downloaded regex v0.2.10
[INFO] [stderr]   Downloaded syn v0.13.1
[INFO] [stderr]   Downloaded proc-macro2 v0.3.6
[INFO] [stderr]   Downloaded quote v0.5.1
[INFO] [stderr]   Downloaded serde_derive v1.0.37
[INFO] [stderr]   Downloaded same-file v1.0.2
[INFO] [stderr]   Downloaded walkdir v2.1.4
[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] adbbb6d2b0ec344f7275bbc6b1c7abe021f0563d3b2dd6caf0d971f176aac476
[INFO] running `Command { std: "docker" "start" "-a" "adbbb6d2b0ec344f7275bbc6b1c7abe021f0563d3b2dd6caf0d971f176aac476", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adbbb6d2b0ec344f7275bbc6b1c7abe021f0563d3b2dd6caf0d971f176aac476", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adbbb6d2b0ec344f7275bbc6b1c7abe021f0563d3b2dd6caf0d971f176aac476", kill_on_drop: false }`
[INFO] [stdout] adbbb6d2b0ec344f7275bbc6b1c7abe021f0563d3b2dd6caf0d971f176aac476
[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] 039fde373bc2b61903610d2140c94b39fe9f2e879c85a9220786124a298c586b
[INFO] running `Command { std: "docker" "start" "-a" "039fde373bc2b61903610d2140c94b39fe9f2e879c85a9220786124a298c586b", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking serde v1.0.37
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]     Checking regex-syntax v0.4.2
[INFO] [stderr]     Checking same-file v1.0.2
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]    Compiling proc-macro2 v0.3.6
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking walkdir v2.1.4
[INFO] [stderr]     Checking regex-syntax v0.5.3
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking yaml-rust v0.4.0
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]    Compiling quote v0.5.1
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]    Compiling syn v0.13.1
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling serde_derive_internals v0.23.0
[INFO] [stderr]     Checking grep v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.37
[INFO] [stderr]     Checking serde_json v1.0.13
[INFO] [stderr]     Checking serde_yaml v0.7.3
[INFO] [stderr]     Checking trace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | /     lazy_static! {
[INFO] [stdout] 37 | |         static ref RE: Regex = Regex::new(r"^(\./|/)target|/\..*")
[INFO] [stdout] 38 | |             .expect("Unable to parse regex");
[INFO] [stdout] 39 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | /     lazy_static! {
[INFO] [stdout] 37 | |         static ref RE: Regex = Regex::new(r"^(\./|/)target|/\..*")
[INFO] [stdout] 38 | |             .expect("Unable to parse regex");
[INFO] [stdout] 39 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` which comes from the expansion of the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `filename`, `line_number`, and `line` are never read
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Trace {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 28 |     pub filename: String,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 29 |     pub line_number: u32,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 30 |     pub line: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Trace` 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: fields `filename`, `line_number`, and `line` are never read
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct Trace {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 28 |     pub filename: String,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 29 |     pub line_number: u32,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 30 |     pub line: String,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Trace` 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: field `requirement` is never read
[INFO] [stdout]    --> src/main.rs:213:5
[INFO] [stdout]     |
[INFO] [stdout] 212 | struct ReqTraces {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 213 |     requirement: Requirement,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ReqTraces` 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 `requirement` is never read
[INFO] [stdout]    --> src/main.rs:213:5
[INFO] [stdout]     |
[INFO] [stdout] 212 | struct ReqTraces {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 213 |     requirement: Requirement,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ReqTraces` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.19s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.13.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "039fde373bc2b61903610d2140c94b39fe9f2e879c85a9220786124a298c586b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "039fde373bc2b61903610d2140c94b39fe9f2e879c85a9220786124a298c586b", kill_on_drop: false }`
[INFO] [stdout] 039fde373bc2b61903610d2140c94b39fe9f2e879c85a9220786124a298c586b