[INFO] cloning repository https://github.com/dmorigin/simpermut-rc [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dmorigin/simpermut-rc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmorigin%2Fsimpermut-rc", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmorigin%2Fsimpermut-rc'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 53b1ad874083dd64bacb5451c43482f30decefd0 [INFO] checking dmorigin/simpermut-rc against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmorigin%2Fsimpermut-rc" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/dmorigin/simpermut-rc 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/dmorigin/simpermut-rc [INFO] finished tweaking git repo https://github.com/dmorigin/simpermut-rc [INFO] tweaked toml for git repo https://github.com/dmorigin/simpermut-rc written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/dmorigin/simpermut-rc 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 bitflags v1.0.3 [INFO] [stderr] Downloaded serde v1.0.71 [INFO] [stderr] Downloaded clicolors-control v0.2.0 [INFO] [stderr] Downloaded serde_derive v1.0.71 [INFO] [stderr] Downloaded console v0.6.1 [INFO] [stderr] Downloaded lock_api v0.1.3 [INFO] [stderr] Downloaded quote v0.6.6 [INFO] [stderr] Downloaded num-traits v0.2.5 [INFO] [stderr] Downloaded syn v0.14.8 [INFO] [stderr] Downloaded chrono v0.4.5 [INFO] [stderr] Downloaded regex v1.0.2 [INFO] [stderr] Downloaded smallvec v0.6.4 [INFO] [stderr] Downloaded parking_lot v0.6.3 [INFO] [stderr] Downloaded aho-corasick v0.6.6 [INFO] [stderr] Downloaded ryu v0.2.4 [INFO] [stderr] Downloaded indicatif v0.9.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] be5df13547a4a6e1a373e44ee62a180a9adea102d35b2ed53ec8886748b5dcaa [INFO] running `Command { std: "docker" "start" "-a" "be5df13547a4a6e1a373e44ee62a180a9adea102d35b2ed53ec8886748b5dcaa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "be5df13547a4a6e1a373e44ee62a180a9adea102d35b2ed53ec8886748b5dcaa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "be5df13547a4a6e1a373e44ee62a180a9adea102d35b2ed53ec8886748b5dcaa", kill_on_drop: false }` [INFO] [stdout] be5df13547a4a6e1a373e44ee62a180a9adea102d35b2ed53ec8886748b5dcaa [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 03c3c3a8c91ea48db498fc06cb5af0ba6ff0b8fe53c99af996737b924bd0c9a6 [INFO] running `Command { std: "docker" "start" "-a" "03c3c3a8c91ea48db498fc06cb5af0ba6ff0b8fe53c99af996737b924bd0c9a6", kill_on_drop: false }` [INFO] [stderr] Compiling version_check v0.1.4 [INFO] [stderr] Checking ucd-util v0.1.1 [INFO] [stderr] Checking rand v0.4.3 [INFO] [stderr] Checking memchr v2.0.1 [INFO] [stderr] Compiling proc-macro2 v0.4.13 [INFO] [stderr] Compiling regex v0.2.11 [INFO] [stderr] Checking smallvec v0.6.4 [INFO] [stderr] Compiling num-traits v0.2.5 [INFO] [stderr] Checking aho-corasick v0.6.6 [INFO] [stderr] Checking utf8-ranges v1.0.0 [INFO] [stderr] Checking lock_api v0.1.3 [INFO] [stderr] Checking regex-syntax v0.5.6 [INFO] [stderr] Compiling lazy_static v1.1.0 [INFO] [stderr] Compiling serde v1.0.71 [INFO] [stderr] Checking lazy_static v0.2.11 [INFO] [stderr] Compiling num-integer v0.1.39 [INFO] [stderr] Compiling ryu v0.2.4 [INFO] [stderr] Checking clicolors-control v0.2.0 [INFO] [stderr] Checking parking_lot_core v0.2.14 [INFO] [stderr] Checking termios v0.2.2 [INFO] [stderr] Compiling quote v0.6.6 [INFO] [stderr] Compiling regex v1.0.2 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Compiling syn v0.14.8 [INFO] [stderr] Checking parking_lot v0.6.3 [INFO] [stderr] Checking textwrap v0.10.0 [INFO] [stderr] Checking regex-syntax v0.6.2 [INFO] [stderr] Checking atty v0.2.11 [INFO] [stderr] Checking itoa v0.4.2 [INFO] [stderr] Checking strsim v0.7.0 [INFO] [stderr] Checking cfg-if v0.1.5 [INFO] [stderr] Checking bitflags v1.0.3 [INFO] [stderr] Checking uuid v0.6.5 [INFO] [stderr] Checking clap v2.32.0 [INFO] [stderr] Checking chrono v0.4.5 [INFO] [stderr] Checking console v0.6.1 [INFO] [stderr] Checking indicatif v0.9.0 [INFO] [stderr] Compiling serde_derive v1.0.71 [INFO] [stderr] Checking serde_json v1.0.26 [INFO] [stderr] Checking sim_permut v0.3.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Result` is imported redundantly [INFO] [stdout] --> src/template.rs:5:19 [INFO] [stdout] | [INFO] [stdout] 5 | use std::result::{Result}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Result` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/simcraft/slot.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::default::Default; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Result` is imported redundantly [INFO] [stdout] --> src/simcraft/slot.rs:4:19 [INFO] [stdout] | [INFO] [stdout] 4 | use std::result::{Result}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Result` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Option` is imported redundantly [INFO] [stdout] --> src/simcraft/item_map.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::option::Option; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Option` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/simcraft/item_map.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | use std::default::Default; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Result` is imported redundantly [INFO] [stdout] --> src/simcraft/mod.rs:13:19 [INFO] [stdout] | [INFO] [stdout] 13 | use std::result::{Result}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Result` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/simcraft/mod.rs:156:69 [INFO] [stdout] | [INFO] [stdout] 156 | pub fn permutation(&mut self, iterations: (u64, u64)) -> Result<(u64), Error> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 156 - pub fn permutation(&mut self, iterations: (u64, u64)) -> Result<(u64), Error> { [INFO] [stdout] 156 + pub fn permutation(&mut self, iterations: (u64, u64)) -> Result { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Result` is imported redundantly [INFO] [stdout] --> src/configuration.rs:3:19 [INFO] [stdout] | [INFO] [stdout] 3 | use std::result::{Result}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Result` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Result` is imported redundantly [INFO] [stdout] --> src/template.rs:5:19 [INFO] [stdout] | [INFO] [stdout] 5 | use std::result::{Result}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Result` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/simcraft/slot.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::default::Default; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Result` is imported redundantly [INFO] [stdout] --> src/simcraft/slot.rs:4:19 [INFO] [stdout] | [INFO] [stdout] 4 | use std::result::{Result}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Result` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Option` is imported redundantly [INFO] [stdout] --> src/simcraft/item_map.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use std::option::Option; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Option` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/simcraft/item_map.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | use std::default::Default; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Result` is imported redundantly [INFO] [stdout] --> src/simcraft/mod.rs:13:19 [INFO] [stdout] | [INFO] [stdout] 13 | use std::result::{Result}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Result` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/simcraft/mod.rs:156:69 [INFO] [stdout] | [INFO] [stdout] 156 | pub fn permutation(&mut self, iterations: (u64, u64)) -> Result<(u64), Error> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 156 - pub fn permutation(&mut self, iterations: (u64, u64)) -> Result<(u64), Error> { [INFO] [stdout] 156 + pub fn permutation(&mut self, iterations: (u64, u64)) -> Result { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Result` is imported redundantly [INFO] [stdout] --> src/configuration.rs:3:19 [INFO] [stdout] | [INFO] [stdout] 3 | use std::result::{Result}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Result` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `iterations` is never read [INFO] [stdout] --> src/simcraft/statistic.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 36 | pub struct Statistic [INFO] [stdout] | --------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 41 | pub iterations: u64, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `iterations` is never read [INFO] [stdout] --> src/simcraft/statistic.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 36 | pub struct Statistic [INFO] [stdout] | --------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 41 | pub iterations: u64, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 9 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.68s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.8 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4` [INFO] running `Command { std: "docker" "inspect" "03c3c3a8c91ea48db498fc06cb5af0ba6ff0b8fe53c99af996737b924bd0c9a6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "03c3c3a8c91ea48db498fc06cb5af0ba6ff0b8fe53c99af996737b924bd0c9a6", kill_on_drop: false }` [INFO] [stdout] 03c3c3a8c91ea48db498fc06cb5af0ba6ff0b8fe53c99af996737b924bd0c9a6