[INFO] cloning repository https://github.com/sassou5018/imap-demo [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sassou5018/imap-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsassou5018%2Fimap-demo", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsassou5018%2Fimap-demo'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 68a156cc676240096135c3a35c49e94bbdc98f46 [INFO] checking sassou5018/imap-demo against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsassou5018%2Fimap-demo" "/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/sassou5018/imap-demo 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/sassou5018/imap-demo [INFO] finished tweaking git repo https://github.com/sassou5018/imap-demo [INFO] tweaked toml for git repo https://github.com/sassou5018/imap-demo written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/sassou5018/imap-demo 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 mail-parser v0.8.2 [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] 6395adfd24052b00f6a5985d82831903936c8ebb15b46ade01cdbdbe30a8a07e [INFO] running `Command { std: "docker" "start" "-a" "6395adfd24052b00f6a5985d82831903936c8ebb15b46ade01cdbdbe30a8a07e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6395adfd24052b00f6a5985d82831903936c8ebb15b46ade01cdbdbe30a8a07e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6395adfd24052b00f6a5985d82831903936c8ebb15b46ade01cdbdbe30a8a07e", kill_on_drop: false }` [INFO] [stdout] 6395adfd24052b00f6a5985d82831903936c8ebb15b46ade01cdbdbe30a8a07e [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] f04e2918152cb35c647afe72b5a43066ddce1739cbee43f38fcec98bd054318a [INFO] running `Command { std: "docker" "start" "-a" "f04e2918152cb35c647afe72b5a43066ddce1739cbee43f38fcec98bd054318a", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.146 [INFO] [stderr] Compiling pkg-config v0.3.27 [INFO] [stderr] Compiling cc v1.0.79 [INFO] [stderr] Compiling proc-macro2 v1.0.60 [INFO] [stderr] Compiling quote v1.0.28 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling unicode-ident v1.0.9 [INFO] [stderr] Compiling lexical-core v0.7.6 [INFO] [stderr] Checking foreign-types-shared v0.1.1 [INFO] [stderr] Compiling openssl v0.10.54 [INFO] [stderr] Checking arrayvec v0.5.2 [INFO] [stderr] Checking static_assertions v1.1.0 [INFO] [stderr] Checking ryu v1.0.13 [INFO] [stderr] Compiling nom v5.1.3 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling native-tls v0.2.11 [INFO] [stderr] Checking foreign-types v0.3.2 [INFO] [stderr] Checking once_cell v1.18.0 [INFO] [stderr] Checking iana-time-zone v0.1.57 [INFO] [stderr] Checking openssl-probe v0.1.5 [INFO] [stderr] Checking regex-syntax v0.7.2 [INFO] [stderr] Checking log v0.4.19 [INFO] [stderr] Checking encoding_rs v0.8.32 [INFO] [stderr] Checking bufstream v0.1.4 [INFO] [stderr] Checking base64 v0.13.1 [INFO] [stderr] Compiling syn v2.0.18 [INFO] [stderr] Checking aho-corasick v1.0.2 [INFO] [stderr] Compiling openssl-sys v0.9.88 [INFO] [stderr] Checking time v0.1.45 [INFO] [stderr] Checking chrono v0.4.26 [INFO] [stderr] Checking mail-parser v0.8.2 [INFO] [stderr] Checking regex v1.8.4 [INFO] [stderr] Checking imap-proto v0.10.2 [INFO] [stderr] Compiling openssl-macros v0.1.1 [INFO] [stderr] Checking imap v2.4.1 [INFO] [stderr] Checking imaptest v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:20:5 [INFO] [stdout] | [INFO] [stdout] 20 | fetch_inbox_top(&config); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 20 | let _ = fetch_inbox_top(&config); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:71:5 [INFO] [stdout] | [INFO] [stdout] 71 | imap_session.logout(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 71 | let _ = imap_session.logout(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:20:5 [INFO] [stdout] | [INFO] [stdout] 20 | fetch_inbox_top(&config); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 20 | let _ = fetch_inbox_top(&config); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:71:5 [INFO] [stdout] | [INFO] [stdout] 71 | imap_session.logout(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 71 | let _ = imap_session.logout(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.76s [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: imap-proto v0.10.2 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3` [INFO] running `Command { std: "docker" "inspect" "f04e2918152cb35c647afe72b5a43066ddce1739cbee43f38fcec98bd054318a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f04e2918152cb35c647afe72b5a43066ddce1739cbee43f38fcec98bd054318a", kill_on_drop: false }` [INFO] [stdout] f04e2918152cb35c647afe72b5a43066ddce1739cbee43f38fcec98bd054318a [INFO] checking sassou5018/imap-demo against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsassou5018%2Fimap-demo" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/sassou5018/imap-demo on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/sassou5018/imap-demo [INFO] finished tweaking git repo https://github.com/sassou5018/imap-demo [INFO] tweaked toml for git repo https://github.com/sassou5018/imap-demo written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/sassou5018/imap-demo 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8e98e14029cf073446cd8d56ce48e99a6de2ecfc10cedb5a9881f770be45cbe2 [INFO] running `Command { std: "docker" "start" "-a" "8e98e14029cf073446cd8d56ce48e99a6de2ecfc10cedb5a9881f770be45cbe2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8e98e14029cf073446cd8d56ce48e99a6de2ecfc10cedb5a9881f770be45cbe2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8e98e14029cf073446cd8d56ce48e99a6de2ecfc10cedb5a9881f770be45cbe2", kill_on_drop: false }` [INFO] [stdout] 8e98e14029cf073446cd8d56ce48e99a6de2ecfc10cedb5a9881f770be45cbe2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 230790d68c810825694ffa54a2f21646a2316fbd8f631b5e1c224f71600b8651 [INFO] running `Command { std: "docker" "start" "-a" "230790d68c810825694ffa54a2f21646a2316fbd8f631b5e1c224f71600b8651", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.60 [INFO] [stderr] Compiling libc v0.2.146 [INFO] [stderr] Compiling cc v1.0.79 [INFO] [stderr] Compiling pkg-config v0.3.27 [INFO] [stderr] Compiling unicode-ident v1.0.9 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling quote v1.0.28 [INFO] [stderr] Compiling lexical-core v0.7.6 [INFO] [stderr] Compiling nom v5.1.3 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Checking ryu v1.0.13 [INFO] [stderr] Checking static_assertions v1.1.0 [INFO] [stderr] Compiling openssl v0.10.54 [INFO] [stderr] Checking foreign-types-shared v0.1.1 [INFO] [stderr] Checking arrayvec v0.5.2 [INFO] [stderr] Compiling native-tls v0.2.11 [INFO] [stderr] Checking foreign-types v0.3.2 [INFO] [stderr] Checking once_cell v1.18.0 [INFO] [stderr] Checking iana-time-zone v0.1.57 [INFO] [stderr] Checking openssl-probe v0.1.5 [INFO] [stderr] Checking log v0.4.19 [INFO] [stderr] Checking regex-syntax v0.7.2 [INFO] [stderr] Checking encoding_rs v0.8.32 [INFO] [stderr] Checking bufstream v0.1.4 [INFO] [stderr] Checking base64 v0.13.1 [INFO] [stderr] Checking aho-corasick v1.0.2 [INFO] [stderr] Compiling openssl-sys v0.9.88 [INFO] [stderr] Compiling syn v2.0.18 [INFO] [stderr] Checking time v0.1.45 [INFO] [stderr] Checking chrono v0.4.26 [INFO] [stderr] Checking mail-parser v0.8.2 [INFO] [stderr] Checking regex v1.8.4 [INFO] [stderr] Checking imap-proto v0.10.2 [INFO] [stderr] Compiling openssl-macros v0.1.1 [INFO] [stderr] Checking imap v2.4.1 [INFO] [stderr] Checking imaptest v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:20:5 [INFO] [stdout] | [INFO] [stdout] 20 | fetch_inbox_top(&config); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 20 | let _ = fetch_inbox_top(&config); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:71:5 [INFO] [stdout] | [INFO] [stdout] 71 | imap_session.logout(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 71 | let _ = imap_session.logout(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:20:5 [INFO] [stdout] | [INFO] [stdout] 20 | fetch_inbox_top(&config); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 20 | let _ = fetch_inbox_top(&config); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:71:5 [INFO] [stdout] | [INFO] [stdout] 71 | imap_session.logout(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 71 | let _ = imap_session.logout(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.51s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: imap-proto v0.10.2 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3` [INFO] running `Command { std: "docker" "inspect" "230790d68c810825694ffa54a2f21646a2316fbd8f631b5e1c224f71600b8651", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "230790d68c810825694ffa54a2f21646a2316fbd8f631b5e1c224f71600b8651", kill_on_drop: false }` [INFO] [stdout] 230790d68c810825694ffa54a2f21646a2316fbd8f631b5e1c224f71600b8651