[INFO] cloning repository https://github.com/FrankenApps/rust-xlsx
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FrankenApps/rust-xlsx" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrankenApps%2Frust-xlsx", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrankenApps%2Frust-xlsx'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0574c94a3058aaee47504934d511dfcccfb5ee2d
[INFO] checking FrankenApps/rust-xlsx against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrankenApps%2Frust-xlsx" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FrankenApps/rust-xlsx 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/FrankenApps/rust-xlsx
[INFO] finished tweaking git repo https://github.com/FrankenApps/rust-xlsx
[INFO] tweaked toml for git repo https://github.com/FrankenApps/rust-xlsx written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/FrankenApps/rust-xlsx 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] d5f38ff2dbb327f60e3254fb80f631d8f1307f2d2eac49bc3fd36c59ddf888f8
[INFO] running `Command { std: "docker" "start" "-a" "d5f38ff2dbb327f60e3254fb80f631d8f1307f2d2eac49bc3fd36c59ddf888f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5f38ff2dbb327f60e3254fb80f631d8f1307f2d2eac49bc3fd36c59ddf888f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5f38ff2dbb327f60e3254fb80f631d8f1307f2d2eac49bc3fd36c59ddf888f8", kill_on_drop: false }`
[INFO] [stdout] d5f38ff2dbb327f60e3254fb80f631d8f1307f2d2eac49bc3fd36c59ddf888f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 492ddb8199740923b0184cf64b01d199a279f953112d15d0ca1986abd490d39f
[INFO] running `Command { std: "docker" "start" "-a" "492ddb8199740923b0184cf64b01d199a279f953112d15d0ca1986abd490d39f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking bzip2 v0.4.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking zip v0.5.13
[INFO] [stderr]     Checking simple_xlsx_file v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `general_properties`, `rows`, and `shared_strings` are never read
[INFO] [stdout]  --> src/xlsx_writer/document.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Document {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 4 |     general_properties: DocumentProperties,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     rows: Vec<String>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     shared_strings: Vec<String>
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `author`, `company`, and `created` are never read
[INFO] [stdout]  --> src/xlsx_writer/document_properties.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct DocumentProperties {
[INFO] [stdout]   |            ------------------ fields in this struct
[INFO] [stdout] 2 |     author: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 3 |     company: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 4 |     created: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `document` is never read
[INFO] [stdout]  --> src/xlsx_writer/xlsx_writer.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct XlsxWriter {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 6 |     document: Document,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `general_properties`, `rows`, and `shared_strings` are never read
[INFO] [stdout]  --> src/xlsx_writer/document.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Document {
[INFO] [stdout]   |            -------- fields in this struct
[INFO] [stdout] 4 |     general_properties: DocumentProperties,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 5 |     rows: Vec<String>,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 6 |     shared_strings: Vec<String>
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `author`, `company`, and `created` are never read
[INFO] [stdout]  --> src/xlsx_writer/document_properties.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct DocumentProperties {
[INFO] [stdout]   |            ------------------ fields in this struct
[INFO] [stdout] 2 |     author: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 3 |     company: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 4 |     created: String,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `document` is never read
[INFO] [stdout]  --> src/xlsx_writer/xlsx_writer.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct XlsxWriter {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 6 |     document: Document,
[INFO] [stdout]   |     ^^^^^^^^
[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 5.20s
[INFO] running `Command { std: "docker" "inspect" "492ddb8199740923b0184cf64b01d199a279f953112d15d0ca1986abd490d39f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "492ddb8199740923b0184cf64b01d199a279f953112d15d0ca1986abd490d39f", kill_on_drop: false }`
[INFO] [stdout] 492ddb8199740923b0184cf64b01d199a279f953112d15d0ca1986abd490d39f