[INFO] cloning repository https://github.com/lautis/rscsv
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lautis/rscsv" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flautis%2Frscsv", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flautis%2Frscsv'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 10706856be2e88861124360903437a6170886142
[INFO] checking lautis/rscsv against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flautis%2Frscsv" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lautis/rscsv 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/lautis/rscsv
[INFO] finished tweaking git repo https://github.com/lautis/rscsv
[INFO] tweaked toml for git repo https://github.com/lautis/rscsv written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/lautis/rscsv 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]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.89
[INFO] [stderr]   Downloaded csv v1.0.5
[INFO] [stderr]   Downloaded libcruby-sys v0.7.5
[INFO] [stderr]   Downloaded helix v0.7.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 3a11580a8380462850b7efc065ea2b84735d2c7f6cec7b4ce79350ab511279f2
[INFO] running `Command { std: "docker" "start" "-a" "3a11580a8380462850b7efc065ea2b84735d2c7f6cec7b4ce79350ab511279f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a11580a8380462850b7efc065ea2b84735d2c7f6cec7b4ce79350ab511279f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a11580a8380462850b7efc065ea2b84735d2c7f6cec7b4ce79350ab511279f2", kill_on_drop: false }`
[INFO] [stdout] 3a11580a8380462850b7efc065ea2b84735d2c7f6cec7b4ce79350ab511279f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 7f5cb5f7096f57591ac4c4f94fd2be70cfc2d227d1152f5c1428fd7fc30060db
[INFO] running `Command { std: "docker" "start" "-a" "7f5cb5f7096f57591ac4c4f94fd2be70cfc2d227d1152f5c1428fd7fc30060db", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling libcruby-sys v0.7.5
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]     Checking cstr-macro v0.1.0
[INFO] [stderr]     Checking helix v0.7.5
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]     Checking csv v1.0.5
[INFO] [stderr]     Checking rscsv v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:182:1
[INFO] [stdout]     |
[INFO] [stdout] 182 | / ruby! {
[INFO] [stdout] 183 | |     class RscsvReader {
[INFO] [stdout] 184 | |         def each_internal(data: Enumerator) -> Result<(), &'static str> {
[INFO] [stdout] 185 | |             yield_csv(&data).map_err(|_| "Error parsing CSV")
[INFO] [stdout] ...   |
[INFO] [stdout] 205 | |     }
[INFO] [stdout] 206 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `codegen_define_method` which comes from the expansion of the macro `ruby` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:182:1
[INFO] [stdout]     |
[INFO] [stdout] 182 | / ruby! {
[INFO] [stdout] 183 | |     class RscsvReader {
[INFO] [stdout] 184 | |         def each_internal(data: Enumerator) -> Result<(), &'static str> {
[INFO] [stdout] 185 | |             yield_csv(&data).map_err(|_| "Error parsing CSV")
[INFO] [stdout] ...   |
[INFO] [stdout] 205 | |     }
[INFO] [stdout] 206 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `codegen_define_method` which comes from the expansion of the macro `ruby` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:182:1
[INFO] [stdout]     |
[INFO] [stdout] 182 | / ruby! {
[INFO] [stdout] 183 | |     class RscsvReader {
[INFO] [stdout] 184 | |         def each_internal(data: Enumerator) -> Result<(), &'static str> {
[INFO] [stdout] 185 | |             yield_csv(&data).map_err(|_| "Error parsing CSV")
[INFO] [stdout] ...   |
[INFO] [stdout] 205 | |     }
[INFO] [stdout] 206 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `codegen_define_method` which comes from the expansion of the macro `ruby` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:182:1
[INFO] [stdout]     |
[INFO] [stdout] 182 | / ruby! {
[INFO] [stdout] 183 | |     class RscsvReader {
[INFO] [stdout] 184 | |         def each_internal(data: Enumerator) -> Result<(), &'static str> {
[INFO] [stdout] 185 | |             yield_csv(&data).map_err(|_| "Error parsing CSV")
[INFO] [stdout] ...   |
[INFO] [stdout] 205 | |     }
[INFO] [stdout] 206 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `codegen_define_method` which comes from the expansion of the macro `ruby` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:182:1
[INFO] [stdout]     |
[INFO] [stdout] 182 | / ruby! {
[INFO] [stdout] 183 | |     class RscsvReader {
[INFO] [stdout] 184 | |         def each_internal(data: Enumerator) -> Result<(), &'static str> {
[INFO] [stdout] 185 | |             yield_csv(&data).map_err(|_| "Error parsing CSV")
[INFO] [stdout] ...   |
[INFO] [stdout] 205 | |     }
[INFO] [stdout] 206 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `codegen_define_method` which comes from the expansion of the macro `ruby` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:182:1
[INFO] [stdout]     |
[INFO] [stdout] 182 | / ruby! {
[INFO] [stdout] 183 | |     class RscsvReader {
[INFO] [stdout] 184 | |         def each_internal(data: Enumerator) -> Result<(), &'static str> {
[INFO] [stdout] 185 | |             yield_csv(&data).map_err(|_| "Error parsing CSV")
[INFO] [stdout] ...   |
[INFO] [stdout] 205 | |     }
[INFO] [stdout] 206 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `codegen_define_method` which comes from the expansion of the macro `ruby` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:12:63
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn generate_lines(rows: &[Vec<String>]) -> Result<String, Box<Error>> {
[INFO] [stdout]    |                                                               ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn generate_lines(rows: &[Vec<String>]) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]    |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:182:1
[INFO] [stdout]     |
[INFO] [stdout] 182 | / ruby! {
[INFO] [stdout] 183 | |     class RscsvReader {
[INFO] [stdout] 184 | |         def each_internal(data: Enumerator) -> Result<(), &'static str> {
[INFO] [stdout] 185 | |             yield_csv(&data).map_err(|_| "Error parsing CSV")
[INFO] [stdout] ...   |
[INFO] [stdout] 205 | |     }
[INFO] [stdout] 206 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `codegen_define_method` which comes from the expansion of the macro `ruby` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:182:1
[INFO] [stdout]     |
[INFO] [stdout] 182 | / ruby! {
[INFO] [stdout] 183 | |     class RscsvReader {
[INFO] [stdout] 184 | |         def each_internal(data: Enumerator) -> Result<(), &'static str> {
[INFO] [stdout] 185 | |             yield_csv(&data).map_err(|_| "Error parsing CSV")
[INFO] [stdout] ...   |
[INFO] [stdout] 205 | |     }
[INFO] [stdout] 206 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `codegen_define_method` which comes from the expansion of the macro `ruby` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:12:63
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn generate_lines(rows: &[Vec<String>]) -> Result<String, Box<Error>> {
[INFO] [stdout]    |                                                               ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn generate_lines(rows: &[Vec<String>]) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]    |                                                               +++
[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 4.26s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: helix v0.7.5
[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" "7f5cb5f7096f57591ac4c4f94fd2be70cfc2d227d1152f5c1428fd7fc30060db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f5cb5f7096f57591ac4c4f94fd2be70cfc2d227d1152f5c1428fd7fc30060db", kill_on_drop: false }`
[INFO] [stdout] 7f5cb5f7096f57591ac4c4f94fd2be70cfc2d227d1152f5c1428fd7fc30060db