[INFO] cloning repository https://github.com/tatref/synacor-challenge [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tatref/synacor-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftatref%2Fsynacor-challenge", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftatref%2Fsynacor-challenge'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 2211d1ff790d02dfe9036d6e88ca9c76aa9dbd22 [INFO] checking tatref/synacor-challenge against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftatref%2Fsynacor-challenge" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/tatref/synacor-challenge 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/tatref/synacor-challenge [INFO] finished tweaking git repo https://github.com/tatref/synacor-challenge [INFO] tweaked toml for git repo https://github.com/tatref/synacor-challenge written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/tatref/synacor-challenge 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_with_macros v3.2.0 [INFO] [stderr] Downloaded rustyline v12.0.0 [INFO] [stderr] Downloaded serde_with v3.2.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] db311329c3b5e689b6fd86a464fad210f76a8eb493b90f3377cf4c1e4a9c939d [INFO] running `Command { std: "docker" "start" "-a" "db311329c3b5e689b6fd86a464fad210f76a8eb493b90f3377cf4c1e4a9c939d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "db311329c3b5e689b6fd86a464fad210f76a8eb493b90f3377cf4c1e4a9c939d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "db311329c3b5e689b6fd86a464fad210f76a8eb493b90f3377cf4c1e4a9c939d", kill_on_drop: false }` [INFO] [stdout] db311329c3b5e689b6fd86a464fad210f76a8eb493b90f3377cf4c1e4a9c939d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 358bfc5dfa760930c7144f49a8ae046d1a03e5f3c2f46798a2ef6132994f4ada [INFO] running `Command { std: "docker" "start" "-a" "358bfc5dfa760930c7144f49a8ae046d1a03e5f3c2f46798a2ef6132994f4ada", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.66 [INFO] [stderr] Compiling unicode-ident v1.0.11 [INFO] [stderr] Compiling rustix v0.38.8 [INFO] [stderr] Checking bitflags v2.4.0 [INFO] [stderr] Checking linux-raw-sys v0.4.5 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling fnv v1.0.7 [INFO] [stderr] Compiling ident_case v1.0.1 [INFO] [stderr] Compiling strsim v0.10.0 [INFO] [stderr] Compiling libc v0.2.147 [INFO] [stderr] Compiling serde v1.0.183 [INFO] [stderr] Compiling serde_derive v1.0.183 [INFO] [stderr] Checking anstyle-query v1.0.0 [INFO] [stderr] Checking smallvec v1.11.0 [INFO] [stderr] Checking anstyle-parse v0.2.1 [INFO] [stderr] Checking anstyle v1.0.1 [INFO] [stderr] Checking static_assertions v1.1.0 [INFO] [stderr] Checking clap_lex v0.5.0 [INFO] [stderr] Compiling serde_json v1.0.105 [INFO] [stderr] Checking endian-type v0.1.2 [INFO] [stderr] Checking regex-syntax v0.7.4 [INFO] [stderr] Checking home v0.5.5 [INFO] [stderr] Checking itoa v1.0.9 [INFO] [stderr] Checking unicode-segmentation v1.10.1 [INFO] [stderr] Checking ryu v1.0.15 [INFO] [stderr] Checking unicode-width v0.1.10 [INFO] [stderr] Checking either v1.9.0 [INFO] [stderr] Checking nibble_vec v0.1.0 [INFO] [stderr] Checking radix_trie v0.2.1 [INFO] [stderr] Checking itertools v0.11.0 [INFO] [stderr] Checking aho-corasick v1.0.4 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Compiling syn v2.0.29 [INFO] [stderr] Checking nix v0.26.2 [INFO] [stderr] Checking regex-automata v0.3.6 [INFO] [stderr] Checking is-terminal v0.4.9 [INFO] [stderr] Checking fd-lock v3.0.13 [INFO] [stderr] Checking anstream v0.3.2 [INFO] [stderr] Checking clap_builder v4.3.21 [INFO] [stderr] Checking rustyline v12.0.0 [INFO] [stderr] Checking regex v1.9.3 [INFO] [stderr] Compiling darling_core v0.20.3 [INFO] [stderr] Checking clap v4.3.21 [INFO] [stderr] Compiling darling_macro v0.20.3 [INFO] [stderr] Compiling darling v0.20.3 [INFO] [stderr] Compiling serde_with_macros v3.2.0 [INFO] [stderr] Checking serde_with v3.2.0 [INFO] [stderr] Checking synacor-challenge v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `instr` [INFO] [stdout] --> src/tests.rs:100:13 [INFO] [stdout] | [INFO] [stdout] 100 | let instr = vm1.run_until_ret()?; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_instr` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `instr` [INFO] [stdout] --> src/tests.rs:104:13 [INFO] [stdout] | [INFO] [stdout] 104 | let instr = vm2.run_until_ret()?; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_instr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tests.rs:166:5 [INFO] [stdout] | [INFO] [stdout] 166 | vm1.run_until_ret(); [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] 166 | let _ = vm1.run_until_ret(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tests.rs:173:5 [INFO] [stdout] | [INFO] [stdout] 173 | vm2.run_until_ret(); [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] 173 | let _ = vm2.run_until_ret(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.54s [INFO] running `Command { std: "docker" "inspect" "358bfc5dfa760930c7144f49a8ae046d1a03e5f3c2f46798a2ef6132994f4ada", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "358bfc5dfa760930c7144f49a8ae046d1a03e5f3c2f46798a2ef6132994f4ada", kill_on_drop: false }` [INFO] [stdout] 358bfc5dfa760930c7144f49a8ae046d1a03e5f3c2f46798a2ef6132994f4ada [INFO] checking tatref/synacor-challenge against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftatref%2Fsynacor-challenge" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/tatref/synacor-challenge 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/tatref/synacor-challenge [INFO] finished tweaking git repo https://github.com/tatref/synacor-challenge [INFO] tweaked toml for git repo https://github.com/tatref/synacor-challenge written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/tatref/synacor-challenge 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 16ed8949d154a56efb3dcba5b349c5e76d0e08246ce0a90a643a0f9fde237296 [INFO] running `Command { std: "docker" "start" "-a" "16ed8949d154a56efb3dcba5b349c5e76d0e08246ce0a90a643a0f9fde237296", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "16ed8949d154a56efb3dcba5b349c5e76d0e08246ce0a90a643a0f9fde237296", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "16ed8949d154a56efb3dcba5b349c5e76d0e08246ce0a90a643a0f9fde237296", kill_on_drop: false }` [INFO] [stdout] 16ed8949d154a56efb3dcba5b349c5e76d0e08246ce0a90a643a0f9fde237296 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] bb08ef05ac0e32acd3c5dc70f88625fd4a14391b9e62fa134f8b77aadd6e9763 [INFO] running `Command { std: "docker" "start" "-a" "bb08ef05ac0e32acd3c5dc70f88625fd4a14391b9e62fa134f8b77aadd6e9763", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.66 [INFO] [stderr] Compiling rustix v0.38.8 [INFO] [stderr] Compiling unicode-ident v1.0.11 [INFO] [stderr] Checking linux-raw-sys v0.4.5 [INFO] [stderr] Checking bitflags v2.4.0 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling fnv v1.0.7 [INFO] [stderr] Compiling strsim v0.10.0 [INFO] [stderr] Compiling ident_case v1.0.1 [INFO] [stderr] Compiling libc v0.2.147 [INFO] [stderr] Compiling serde v1.0.183 [INFO] [stderr] Compiling serde_derive v1.0.183 [INFO] [stderr] Checking smallvec v1.11.0 [INFO] [stderr] Checking anstyle-parse v0.2.1 [INFO] [stderr] Checking anstyle-query v1.0.0 [INFO] [stderr] Checking anstyle v1.0.1 [INFO] [stderr] Checking static_assertions v1.1.0 [INFO] [stderr] Checking regex-syntax v0.7.4 [INFO] [stderr] Checking clap_lex v0.5.0 [INFO] [stderr] Compiling serde_json v1.0.105 [INFO] [stderr] Checking endian-type v0.1.2 [INFO] [stderr] Checking ryu v1.0.15 [INFO] [stderr] Checking unicode-segmentation v1.10.1 [INFO] [stderr] Checking either v1.9.0 [INFO] [stderr] Checking nibble_vec v0.1.0 [INFO] [stderr] Checking itoa v1.0.9 [INFO] [stderr] Checking unicode-width v0.1.10 [INFO] [stderr] Checking home v0.5.5 [INFO] [stderr] Checking radix_trie v0.2.1 [INFO] [stderr] Checking itertools v0.11.0 [INFO] [stderr] Checking aho-corasick v1.0.4 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Compiling syn v2.0.29 [INFO] [stderr] Checking nix v0.26.2 [INFO] [stderr] Checking regex-automata v0.3.6 [INFO] [stderr] Checking is-terminal v0.4.9 [INFO] [stderr] Checking fd-lock v3.0.13 [INFO] [stderr] Checking anstream v0.3.2 [INFO] [stderr] Checking clap_builder v4.3.21 [INFO] [stderr] Checking rustyline v12.0.0 [INFO] [stderr] Checking regex v1.9.3 [INFO] [stderr] Checking clap v4.3.21 [INFO] [stderr] Compiling darling_core v0.20.3 [INFO] [stderr] Compiling darling_macro v0.20.3 [INFO] [stderr] Compiling darling v0.20.3 [INFO] [stderr] Compiling serde_with_macros v3.2.0 [INFO] [stderr] Checking serde_with v3.2.0 [INFO] [stderr] Checking synacor-challenge v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `instr` [INFO] [stdout] --> src/tests.rs:100:13 [INFO] [stdout] | [INFO] [stdout] 100 | let instr = vm1.run_until_ret()?; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_instr` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `instr` [INFO] [stdout] --> src/tests.rs:104:13 [INFO] [stdout] | [INFO] [stdout] 104 | let instr = vm2.run_until_ret()?; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_instr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tests.rs:166:5 [INFO] [stdout] | [INFO] [stdout] 166 | vm1.run_until_ret(); [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] 166 | let _ = vm1.run_until_ret(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/tests.rs:173:5 [INFO] [stdout] | [INFO] [stdout] 173 | vm2.run_until_ret(); [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] 173 | let _ = vm2.run_until_ret(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.05s [INFO] running `Command { std: "docker" "inspect" "bb08ef05ac0e32acd3c5dc70f88625fd4a14391b9e62fa134f8b77aadd6e9763", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bb08ef05ac0e32acd3c5dc70f88625fd4a14391b9e62fa134f8b77aadd6e9763", kill_on_drop: false }` [INFO] [stdout] bb08ef05ac0e32acd3c5dc70f88625fd4a14391b9e62fa134f8b77aadd6e9763