[INFO] fetching crate wxf-converter 0.3.0... [INFO] testing wxf-converter-0.3.0 against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530 [INFO] extracting crate wxf-converter 0.3.0 into /workspace/builds/worker-0/source [INFO] validating manifest of crates.io crate wxf-converter 0.3.0 on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate wxf-converter 0.3.0 [INFO] finished tweaking crates.io crate wxf-converter 0.3.0 [INFO] tweaked toml for crates.io crate wxf-converter 0.3.0 written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate crates.io crate wxf-converter 0.3.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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] Downloading crates ... [INFO] [stderr] Downloaded serde-pickle v0.6.0 [INFO] [stderr] Downloaded wolfram_wxf v0.2.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4d5ad3fda342823bdcccdf1d11aa82138da06030acad049421c6be1a1e1e708d [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "4d5ad3fda342823bdcccdf1d11aa82138da06030acad049421c6be1a1e1e708d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4d5ad3fda342823bdcccdf1d11aa82138da06030acad049421c6be1a1e1e708d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4d5ad3fda342823bdcccdf1d11aa82138da06030acad049421c6be1a1e1e708d", kill_on_drop: false }` [INFO] [stdout] 4d5ad3fda342823bdcccdf1d11aa82138da06030acad049421c6be1a1e1e708d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ead187b2fff176735ca791cf9dab1d3bfe60159db041bfc22134abcd98e45924 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "ead187b2fff176735ca791cf9dab1d3bfe60159db041bfc22134abcd98e45924", kill_on_drop: false }` [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Compiling adler32 v1.0.4 [INFO] [stderr] Compiling iter-read v0.2.1 [INFO] [stderr] Compiling ansi_term v0.9.0 [INFO] [stderr] Compiling strsim v0.6.0 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling num-integer v0.1.42 [INFO] [stderr] Compiling num-bigint v0.2.6 [INFO] [stderr] Compiling num-iter v0.1.40 [INFO] [stderr] Compiling num-complex v0.2.4 [INFO] [stderr] Compiling num-rational v0.2.4 [INFO] [stderr] Compiling textwrap v0.9.0 [INFO] [stderr] Compiling serde_json v1.0.48 [INFO] [stderr] Compiling crc32fast v1.2.0 [INFO] [stderr] Compiling miniz_oxide v0.3.6 [INFO] [stderr] Compiling clap v2.27.1 [INFO] [stderr] Compiling flate2 v1.0.14 [INFO] [stderr] Compiling serde-pickle v0.6.0 [INFO] [stderr] Compiling num v0.2.1 [INFO] [stderr] Compiling wolfram_wxf v0.2.2 [INFO] [stderr] Compiling wxf-converter v0.3.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result` [INFO] [stdout] --> src/utils.rs:13:39 [INFO] [stdout] | [INFO] [stdout] 9 | / pub fn parse_file(path: &str, format: Option<&str>) -> Result { [INFO] [stdout] 10 | | let s = fs::read_to_string(path)?; [INFO] [stdout] 11 | | let suffix = match format { [INFO] [stdout] 12 | | Some(s) => s, [INFO] [stdout] 13 | | None => path.split('/').last()?.split('.').last()?, [INFO] [stdout] | | ^ use `.ok_or(...)?` to provide an error compatible with `Result` [INFO] [stdout] ... | [INFO] [stdout] 26 | | } [INFO] [stdout] 27 | | } [INFO] [stdout] | |_- this function returns a `Result` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `Result` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a function that returns `Result` [INFO] [stdout] --> src/utils.rs:13:58 [INFO] [stdout] | [INFO] [stdout] 9 | / pub fn parse_file(path: &str, format: Option<&str>) -> Result { [INFO] [stdout] 10 | | let s = fs::read_to_string(path)?; [INFO] [stdout] 11 | | let suffix = match format { [INFO] [stdout] 12 | | Some(s) => s, [INFO] [stdout] 13 | | None => path.split('/').last()?.split('.').last()?, [INFO] [stdout] | | ^ use `.ok_or(...)?` to provide an error compatible with `Result` [INFO] [stdout] ... | [INFO] [stdout] 26 | | } [INFO] [stdout] 27 | | } [INFO] [stdout] | |_- this function returns a `Result` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `Result` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stderr] error: could not compile `wxf-converter` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `Command { std: "docker" "inspect" "ead187b2fff176735ca791cf9dab1d3bfe60159db041bfc22134abcd98e45924", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ead187b2fff176735ca791cf9dab1d3bfe60159db041bfc22134abcd98e45924", kill_on_drop: false }` [INFO] [stdout] ead187b2fff176735ca791cf9dab1d3bfe60159db041bfc22134abcd98e45924