[INFO] cloning repository https://github.com/dbrgn/rusty-santa [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dbrgn/rusty-santa" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdbrgn%2Frusty-santa", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdbrgn%2Frusty-santa'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 27a2d55bd71ee570ed194d5e7304922ad8def43c [INFO] checking dbrgn/rusty-santa against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdbrgn%2Frusty-santa" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/dbrgn/rusty-santa 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/dbrgn/rusty-santa [INFO] finished tweaking git repo https://github.com/dbrgn/rusty-santa [INFO] tweaked toml for git repo https://github.com/dbrgn/rusty-santa written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/dbrgn/rusty-santa 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 colored v1.5.3 [INFO] [stderr] Downloaded rprompt v1.0.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] fbc7c0e0a17cb24ddd016aac4c4654165f511fb65eb0b2fcbba5bd30a9b3e14c [INFO] running `Command { std: "docker" "start" "-a" "fbc7c0e0a17cb24ddd016aac4c4654165f511fb65eb0b2fcbba5bd30a9b3e14c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fbc7c0e0a17cb24ddd016aac4c4654165f511fb65eb0b2fcbba5bd30a9b3e14c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fbc7c0e0a17cb24ddd016aac4c4654165f511fb65eb0b2fcbba5bd30a9b3e14c", kill_on_drop: false }` [INFO] [stdout] fbc7c0e0a17cb24ddd016aac4c4654165f511fb65eb0b2fcbba5bd30a9b3e14c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] e73eab283112c512e9c8ac173adc480096dd4be41a034d3b2a80cc80d8e74f5e [INFO] running `Command { std: "docker" "start" "-a" "e73eab283112c512e9c8ac173adc480096dd4be41a034d3b2a80cc80d8e74f5e", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.32 [INFO] [stderr] Checking lazy_static v0.2.9 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking utf8-ranges v1.0.0 [INFO] [stderr] Checking log v0.3.8 [INFO] [stderr] Checking regex-syntax v0.4.1 [INFO] [stderr] Checking rprompt v1.0.3 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking colored v1.5.3 [INFO] [stderr] Checking thread_local v0.3.4 [INFO] [stderr] Checking memchr v1.0.2 [INFO] [stderr] Checking rand v0.3.17 [INFO] [stderr] Checking aho-corasick v0.6.3 [INFO] [stderr] Checking regex v0.2.2 [INFO] [stderr] Checking rusty-santa v0.1.0 (/opt/rustwide/workdir/rusty-santa) [INFO] [stdout] warning: methods `get` and `size` are never used [INFO] [stdout] --> rusty-santa/src/lib.rs:64:12 [INFO] [stdout] | [INFO] [stdout] 35 | impl Matrix { [INFO] [stdout] | ----------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 64 | pub fn get(&self, x: &str, y: &str) -> bool { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 103 | pub fn size(&self) -> usize { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking env_logger v0.4.3 [INFO] [stderr] Checking rusty-santa-cli v0.1.0 (/opt/rustwide/workdir/rusty-santa-cli) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> rusty-santa/src/lib.rs:279:13 [INFO] [stdout] | [INFO] [stdout] 279 | let mut matrix = Matrix::new(keys); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> rusty-santa/src/lib.rs:357:13 [INFO] [stdout] | [INFO] [stdout] 357 | for i in 0..1000 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> rusty-santa/src/lib.rs:358:13 [INFO] [stdout] | [INFO] [stdout] 358 | group.assign(); [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] 358 | let _ = group.assign(); [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 2.72s [INFO] running `Command { std: "docker" "inspect" "e73eab283112c512e9c8ac173adc480096dd4be41a034d3b2a80cc80d8e74f5e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e73eab283112c512e9c8ac173adc480096dd4be41a034d3b2a80cc80d8e74f5e", kill_on_drop: false }` [INFO] [stdout] e73eab283112c512e9c8ac173adc480096dd4be41a034d3b2a80cc80d8e74f5e [INFO] checking dbrgn/rusty-santa against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdbrgn%2Frusty-santa" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/dbrgn/rusty-santa 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/dbrgn/rusty-santa [INFO] finished tweaking git repo https://github.com/dbrgn/rusty-santa [INFO] tweaked toml for git repo https://github.com/dbrgn/rusty-santa written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/dbrgn/rusty-santa 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 4f5cfe89f9845a9e571b2dc190446b4cda093bce0eac7e435d10360144cb7a4f [INFO] running `Command { std: "docker" "start" "-a" "4f5cfe89f9845a9e571b2dc190446b4cda093bce0eac7e435d10360144cb7a4f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4f5cfe89f9845a9e571b2dc190446b4cda093bce0eac7e435d10360144cb7a4f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4f5cfe89f9845a9e571b2dc190446b4cda093bce0eac7e435d10360144cb7a4f", kill_on_drop: false }` [INFO] [stdout] 4f5cfe89f9845a9e571b2dc190446b4cda093bce0eac7e435d10360144cb7a4f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c76bbd5dc254a31b0ba9b98fcdd37287aeef92bf74618f924a0ba65809e322f8 [INFO] running `Command { std: "docker" "start" "-a" "c76bbd5dc254a31b0ba9b98fcdd37287aeef92bf74618f924a0ba65809e322f8", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.32 [INFO] [stderr] Checking lazy_static v0.2.9 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking utf8-ranges v1.0.0 [INFO] [stderr] Checking regex-syntax v0.4.1 [INFO] [stderr] Checking log v0.3.8 [INFO] [stderr] Checking rprompt v1.0.3 [INFO] [stderr] Checking colored v1.5.3 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking thread_local v0.3.4 [INFO] [stderr] Checking memchr v1.0.2 [INFO] [stderr] Checking rand v0.3.17 [INFO] [stderr] Checking aho-corasick v0.6.3 [INFO] [stderr] Checking regex v0.2.2 [INFO] [stderr] Checking rusty-santa v0.1.0 (/opt/rustwide/workdir/rusty-santa) [INFO] [stdout] warning: methods `get` and `size` are never used [INFO] [stdout] --> rusty-santa/src/lib.rs:64:12 [INFO] [stdout] | [INFO] [stdout] 35 | impl Matrix { [INFO] [stdout] | ----------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 64 | pub fn get(&self, x: &str, y: &str) -> bool { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 103 | pub fn size(&self) -> usize { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking env_logger v0.4.3 [INFO] [stderr] Checking rusty-santa-cli v0.1.0 (/opt/rustwide/workdir/rusty-santa-cli) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> rusty-santa/src/lib.rs:279:13 [INFO] [stdout] | [INFO] [stdout] 279 | let mut matrix = Matrix::new(keys); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> rusty-santa/src/lib.rs:357:13 [INFO] [stdout] | [INFO] [stdout] 357 | for i in 0..1000 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> rusty-santa/src/lib.rs:358:13 [INFO] [stdout] | [INFO] [stdout] 358 | group.assign(); [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] 358 | let _ = group.assign(); [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 2.44s [INFO] running `Command { std: "docker" "inspect" "c76bbd5dc254a31b0ba9b98fcdd37287aeef92bf74618f924a0ba65809e322f8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c76bbd5dc254a31b0ba9b98fcdd37287aeef92bf74618f924a0ba65809e322f8", kill_on_drop: false }` [INFO] [stdout] c76bbd5dc254a31b0ba9b98fcdd37287aeef92bf74618f924a0ba65809e322f8