[INFO] cloning repository https://github.com/LMatteo/transaction_engine [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LMatteo/transaction_engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLMatteo%2Ftransaction_engine", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLMatteo%2Ftransaction_engine'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 50fa25fcd9b94fba4d167df2afbc91a7bab0e705 [INFO] checking LMatteo/transaction_engine against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLMatteo%2Ftransaction_engine" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/LMatteo/transaction_engine on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/LMatteo/transaction_engine [INFO] finished tweaking git repo https://github.com/LMatteo/transaction_engine [INFO] tweaked toml for git repo https://github.com/LMatteo/transaction_engine written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/LMatteo/transaction_engine 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 323175d9b22dd1542ff1cc7f0ce50e634b3bc79e71683857282d78e332cd7b92 [INFO] running `Command { std: "docker" "start" "-a" "323175d9b22dd1542ff1cc7f0ce50e634b3bc79e71683857282d78e332cd7b92", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "323175d9b22dd1542ff1cc7f0ce50e634b3bc79e71683857282d78e332cd7b92", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "323175d9b22dd1542ff1cc7f0ce50e634b3bc79e71683857282d78e332cd7b92", kill_on_drop: false }` [INFO] [stdout] 323175d9b22dd1542ff1cc7f0ce50e634b3bc79e71683857282d78e332cd7b92 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] eb40022840aac10b69fa4397de33607a44a5d1c7f140ccebef72bc82c191eb28 [INFO] running `Command { std: "docker" "start" "-a" "eb40022840aac10b69fa4397de33607a44a5d1c7f140ccebef72bc82c191eb28", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.43 [INFO] [stderr] Compiling unicode-ident v1.0.4 [INFO] [stderr] Compiling syn v1.0.100 [INFO] [stderr] Compiling serde_derive v1.0.145 [INFO] [stderr] Compiling serde v1.0.145 [INFO] [stderr] Compiling libc v0.2.133 [INFO] [stderr] Checking aho-corasick v0.7.19 [INFO] [stderr] Checking either v1.8.0 [INFO] [stderr] Checking predicates-core v1.0.3 [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Checking float-cmp v0.9.0 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking normalize-line-endings v0.3.0 [INFO] [stderr] Checking difflib v0.4.0 [INFO] [stderr] Checking termtree v0.2.4 [INFO] [stderr] Checking itoa v0.4.8 [INFO] [stderr] Checking ryu v1.0.11 [INFO] [stderr] Checking predicates-tree v1.0.5 [INFO] [stderr] Checking regex v1.6.0 [INFO] [stderr] Compiling quote v1.0.21 [INFO] [stderr] Checking wait-timeout v0.2.0 [INFO] [stderr] Checking predicates v2.1.1 [INFO] [stderr] Checking bstr v0.2.17 [INFO] [stderr] Checking csv v1.1.6 [INFO] [stderr] Checking assert_cmd v2.0.4 [INFO] [stderr] Checking transaction_engine v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `tx_id` is never read [INFO] [stdout] --> src/transaction_engine.rs:17:29 [INFO] [stdout] | [INFO] [stdout] 17 | Deposit{client_id: u16, tx_id : u32, amount: f64}, [INFO] [stdout] | ------- ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:42:9 [INFO] [stdout] | [INFO] [stdout] 42 | writer.serialize(client); [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] 42 | let _ = writer.serialize(client); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:45:5 [INFO] [stdout] | [INFO] [stdout] 45 | writer.flush(); [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] 45 | let _ = writer.flush(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: irrefutable `if let` pattern [INFO] [stdout] --> src/transaction_engine.rs:313:12 [INFO] [stdout] | [INFO] [stdout] 313 | if let PersistedTransaction::Deposit { client_id, tx_id, amount } = tx { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this pattern will always match, so the `if let` is useless [INFO] [stdout] = help: consider replacing the `if let` with a `let` [INFO] [stdout] = note: `#[warn(irrefutable_let_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:42:9 [INFO] [stdout] | [INFO] [stdout] 42 | writer.serialize(client); [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] 42 | let _ = writer.serialize(client); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:45:5 [INFO] [stdout] | [INFO] [stdout] 45 | writer.flush(); [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] 45 | let _ = writer.flush(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.41s [INFO] running `Command { std: "docker" "inspect" "eb40022840aac10b69fa4397de33607a44a5d1c7f140ccebef72bc82c191eb28", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "eb40022840aac10b69fa4397de33607a44a5d1c7f140ccebef72bc82c191eb28", kill_on_drop: false }` [INFO] [stdout] eb40022840aac10b69fa4397de33607a44a5d1c7f140ccebef72bc82c191eb28 [INFO] checking LMatteo/transaction_engine against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLMatteo%2Ftransaction_engine" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/LMatteo/transaction_engine on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/LMatteo/transaction_engine [INFO] finished tweaking git repo https://github.com/LMatteo/transaction_engine [INFO] tweaked toml for git repo https://github.com/LMatteo/transaction_engine written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/LMatteo/transaction_engine 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ee749c3f0c073ac54ee26030c5bf2afd4a3ff8b5df41da05d8c8a4eb315d8803 [INFO] running `Command { std: "docker" "start" "-a" "ee749c3f0c073ac54ee26030c5bf2afd4a3ff8b5df41da05d8c8a4eb315d8803", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ee749c3f0c073ac54ee26030c5bf2afd4a3ff8b5df41da05d8c8a4eb315d8803", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ee749c3f0c073ac54ee26030c5bf2afd4a3ff8b5df41da05d8c8a4eb315d8803", kill_on_drop: false }` [INFO] [stdout] ee749c3f0c073ac54ee26030c5bf2afd4a3ff8b5df41da05d8c8a4eb315d8803 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8de181958296237c13a1ae64ed91bb2b7c92c0fed6d1a7c3d42f0da387599e6a [INFO] running `Command { std: "docker" "start" "-a" "8de181958296237c13a1ae64ed91bb2b7c92c0fed6d1a7c3d42f0da387599e6a", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.43 [INFO] [stderr] Compiling unicode-ident v1.0.4 [INFO] [stderr] Compiling syn v1.0.100 [INFO] [stderr] Compiling serde_derive v1.0.145 [INFO] [stderr] Compiling serde v1.0.145 [INFO] [stderr] Compiling libc v0.2.133 [INFO] [stderr] Checking aho-corasick v0.7.19 [INFO] [stderr] Compiling doc-comment v0.3.3 [INFO] [stderr] Checking either v1.8.0 [INFO] [stderr] Checking predicates-core v1.0.3 [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Checking float-cmp v0.9.0 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking termtree v0.2.4 [INFO] [stderr] Checking itoa v0.4.8 [INFO] [stderr] Checking ryu v1.0.11 [INFO] [stderr] Checking normalize-line-endings v0.3.0 [INFO] [stderr] Checking difflib v0.4.0 [INFO] [stderr] Checking predicates-tree v1.0.5 [INFO] [stderr] Checking regex v1.6.0 [INFO] [stderr] Compiling quote v1.0.21 [INFO] [stderr] Checking wait-timeout v0.2.0 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.6.0/src/exec.rs:848:13 [INFO] [stdout] | [INFO] [stdout] 848 | / match dfa::Fsm::reverse( [INFO] [stdout] 849 | | &self.ro.dfa_reverse, [INFO] [stdout] 850 | | self.cache.value(), [INFO] [stdout] 851 | | false, [INFO] [stdout] ... | [INFO] [stdout] 862 | | Quit => return Some(Quit), [INFO] [stdout] 863 | | }; [INFO] [stdout] | |_____________^ cannot infer type [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: could not compile `regex` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "8de181958296237c13a1ae64ed91bb2b7c92c0fed6d1a7c3d42f0da387599e6a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8de181958296237c13a1ae64ed91bb2b7c92c0fed6d1a7c3d42f0da387599e6a", kill_on_drop: false }` [INFO] [stdout] 8de181958296237c13a1ae64ed91bb2b7c92c0fed6d1a7c3d42f0da387599e6a