[INFO] fetching crate twelf 0.1.7... [INFO] checking twelf-0.1.7 against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3 [INFO] extracting crate twelf 0.1.7 into /workspace/builds/worker-4/source [INFO] validating manifest of crates.io crate twelf 0.1.7 on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate twelf 0.1.7 [INFO] finished tweaking crates.io crate twelf 0.1.7 [INFO] tweaked toml for crates.io crate twelf 0.1.7 written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate crates.io crate twelf 0.1.7 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded serde_dhall v0.10.0 [INFO] [stderr] Downloaded config-derive v0.1.7 [INFO] [stderr] Downloaded dhall_proc_macros v0.5.0 [INFO] [stderr] Downloaded dhall v0.10.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1d31447c87cf913f275870ce2abda64d7e77cb098931df80c42f3091e90e8b5d [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" "1d31447c87cf913f275870ce2abda64d7e77cb098931df80c42f3091e90e8b5d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1d31447c87cf913f275870ce2abda64d7e77cb098931df80c42f3091e90e8b5d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1d31447c87cf913f275870ce2abda64d7e77cb098931df80c42f3091e90e8b5d", kill_on_drop: false }` [INFO] [stdout] 1d31447c87cf913f275870ce2abda64d7e77cb098931df80c42f3091e90e8b5d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5b33d2d342362c294da363491c0a2c343a1817b7f57d33e33d7eaebd0b2aac90 [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" "5b33d2d342362c294da363491c0a2c343a1817b7f57d33e33d7eaebd0b2aac90", kill_on_drop: false }` [INFO] [stderr] Copying to /tmp/fixit [INFO] [stderr] Running `cargo fix --edition` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] note: Switching to Edition 2021 will enable the use of the version 2 feature resolver in Cargo. [INFO] [stderr] This may cause some dependencies to be built with fewer features enabled than previously. [INFO] [stderr] More information about the resolver changes may be found at https://doc.rust-lang.org/nightly/edition-guide/rust-2021/default-cargo-resolver.html [INFO] [stderr] When building the following dependencies, the given features will no longer be used: [INFO] [stderr] [INFO] [stderr] indexmap v1.6.2 (as host dependency): std [INFO] [stderr] memchr v2.3.4: use_std [INFO] [stderr] memchr v2.3.4 (as host dependency): default [INFO] [stderr] [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.64 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling version_check v0.9.2 [INFO] [stderr] Compiling serde_derive v1.0.117 [INFO] [stderr] Compiling serde v1.0.117 [INFO] [stderr] Compiling ucd-trie v0.1.3 [INFO] [stderr] Compiling maplit v1.0.2 [INFO] [stderr] Compiling either v1.6.1 [INFO] [stderr] Checking hashbrown v0.9.1 [INFO] [stderr] Compiling typed-arena v1.7.0 [INFO] [stderr] Checking ipnet v2.3.0 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Compiling doc-comment v0.3.3 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Compiling unicode-segmentation v1.7.1 [INFO] [stderr] Checking hex v0.4.3 [INFO] [stderr] Checking result v1.0.0 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking dtoa v0.4.7 [INFO] [stderr] Compiling indexmap v1.6.2 [INFO] [stderr] Compiling openssl-sys v0.9.61 [INFO] [stderr] Compiling tokio v1.3.0 [INFO] [stderr] Checking tracing-core v0.1.17 [INFO] [stderr] Checking http v0.2.3 [INFO] [stderr] Checking tinyvec v1.1.1 [INFO] [stderr] Checking annotate-snippets v0.9.0 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking elsa v1.4.0 [INFO] [stderr] Compiling pest v2.1.3 [INFO] [stderr] Compiling pretty v0.5.2 [INFO] [stderr] Checking yaml-rust v0.4.5 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking log v0.4.14 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling heck v0.3.2 [INFO] [stderr] Compiling nom v5.1.2 [INFO] [stderr] Compiling generic-array v0.14.4 [INFO] [stderr] Checking encoding_rs v0.8.28 [INFO] [stderr] Checking socket2 v0.3.19 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking tracing v0.1.25 [INFO] [stderr] Compiling lexical-core v0.7.5 [INFO] [stderr] Checking mio v0.7.9 [INFO] [stderr] Checking want v0.3.0 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking futures-util v0.3.13 [INFO] [stderr] Checking unicode-normalization v0.1.17 [INFO] [stderr] Compiling openssl v0.10.33 [INFO] [stderr] Compiling native-tls v0.2.7 [INFO] [stderr] Checking digest v0.9.0 [INFO] [stderr] Checking block-buffer v0.9.0 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Checking sha2 v0.9.3 [INFO] [stderr] Compiling pest_meta v2.1.3 [INFO] [stderr] Checking http-body v0.4.0 [INFO] [stderr] Checking idna v0.2.2 [INFO] [stderr] Checking url v2.2.1 [INFO] [stderr] Checking tokio-util v0.6.4 [INFO] [stderr] Checking tokio-native-tls v0.3.0 [INFO] [stderr] Checking h2 v0.3.1 [INFO] [stderr] Compiling abnf v0.6.1 [INFO] [stderr] Compiling abnf_to_pest v0.5.0 [INFO] [stderr] Compiling pest_generator v2.1.3 [INFO] [stderr] Compiling pin-project-internal v1.0.5 [INFO] [stderr] Compiling pest_derive v2.1.0 [INFO] [stderr] Compiling dhall v0.10.0 [INFO] [stderr] Compiling pest_consume_macros v1.0.6 [INFO] [stderr] Compiling dhall_proc_macros v0.5.0 [INFO] [stderr] Compiling thiserror-impl v1.0.24 [INFO] [stderr] Compiling config-derive v0.1.7 [INFO] [stderr] Checking pest_consume v1.0.6 [INFO] [stderr] Checking thiserror v1.0.24 [INFO] [stderr] Checking pin-project v1.0.5 [INFO] [stderr] Checking hyper v0.14.4 [INFO] [stderr] Checking hyper-tls v0.5.0 [INFO] [stderr] Checking serde_urlencoded v0.7.0 [INFO] [stderr] Checking serde_cbor v0.11.1 [INFO] [stderr] Checking toml v0.5.8 [INFO] [stderr] Checking serde_ini v0.2.0 [INFO] [stderr] Checking serde_yaml v0.8.17 [INFO] [stderr] Checking envy v0.4.1 [INFO] [stderr] Checking reqwest v0.11.2 [INFO] [stderr] Checking serde_dhall v0.10.0 [INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a closure that returns `Result` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_dhall-0.10.0/src/value.rs:481:62 [INFO] [stdout] | [INFO] [stdout] 481 | ... .map(|v| Ok(Self::from_nir(v)?)) [INFO] [stdout] | ------------------------^- [INFO] [stdout] | | | [INFO] [stdout] | | use `.ok_or(...)?` to provide an error compatible with `std::result::Result` [INFO] [stdout] | this function returns a `Result` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `std::result::Result` [INFO] [stdout] note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used on `Option`s, not `Result`s, in a closure that returns `Option` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde_dhall-0.10.0/src/value.rs:482:45 [INFO] [stdout] | [INFO] [stdout] 477 | .map(|(k, v)| { [INFO] [stdout] | __________________________- [INFO] [stdout] 478 | | Some(( [INFO] [stdout] 479 | | k.into(), [INFO] [stdout] 480 | | v.as_ref() [INFO] [stdout] 481 | | .map(|v| Ok(Self::from_nir(v)?)) [INFO] [stdout] 482 | | .transpose()?, [INFO] [stdout] | | ^ use `.ok()?` if you want to discard the `std::result::Result` error information [INFO] [stdout] 483 | | )) [INFO] [stdout] 484 | | }) [INFO] [stdout] | |_____________________- this function returns an `Option` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `std::option::Option<(_, std::option::Option)>` [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 `serde_dhall` due to 3 previous errors [INFO] [stderr] error: failed to migrate to next edition [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `cargo fix --edition --allow-no-vcs --allow-dirty --frozen --all --all-targets --message-format=json` (exit status: 101) [INFO] running `Command { std: "docker" "inspect" "5b33d2d342362c294da363491c0a2c343a1817b7f57d33e33d7eaebd0b2aac90", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5b33d2d342362c294da363491c0a2c343a1817b7f57d33e33d7eaebd0b2aac90", kill_on_drop: false }` [INFO] [stdout] 5b33d2d342362c294da363491c0a2c343a1817b7f57d33e33d7eaebd0b2aac90