[INFO] fetching crate mycelium_core 0.1.1... [INFO] checking mycelium_core-0.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate mycelium_core 0.1.1 into /workspace/builds/worker-5-tc1/source [INFO] validating manifest of crates.io crate mycelium_core 0.1.1 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 crates.io crate mycelium_core 0.1.1 [INFO] finished tweaking crates.io crate mycelium_core 0.1.1 [INFO] tweaked toml for crates.io crate mycelium_core 0.1.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 71 packages [INFO] [stderr] Adding autocfg v0.1.8 (latest: v1.2.0) [INFO] [stderr] Adding base64 v0.10.1 (latest: v0.22.0) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding cloudabi v0.0.3 (latest: v0.1.0) [INFO] [stderr] Adding fern v0.5.9 (latest: v0.6.2) [INFO] [stderr] Adding rand v0.6.5 (latest: v0.8.5) [INFO] [stderr] Adding rand_chacha v0.1.1 (latest: v0.3.1) [INFO] [stderr] Adding rand_core v0.3.1 (latest: v0.6.4) [INFO] [stderr] Adding rand_core v0.4.2 (latest: v0.6.4) [INFO] [stderr] Adding rand_hc v0.1.0 (latest: v0.3.2) [INFO] [stderr] Adding rand_isaac v0.1.1 (latest: v0.3.0) [INFO] [stderr] Adding rand_jitter v0.1.4 (latest: v0.4.0) [INFO] [stderr] Adding rand_os v0.1.3 (latest: v0.2.2) [INFO] [stderr] Adding rand_pcg v0.1.2 (latest: v0.3.1) [INFO] [stderr] Adding rand_xorshift v0.1.1 (latest: v0.3.0) [INFO] [stderr] Adding rdrand v0.4.0 (latest: v0.8.3) [INFO] [stderr] Adding remove_dir_all v0.5.3 (latest: v0.8.2) [INFO] [stderr] Adding ron v0.4.2 (latest: v0.8.1) [INFO] [stderr] Adding uuid v0.7.4 (latest: v1.8.0) [INFO] [stderr] Adding windows-core v0.52.0 (latest: v0.55.0) [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 ron v0.4.2 [INFO] [stderr] Downloaded mycelium_command v0.1.1 [INFO] [stderr] Downloaded fern v0.5.9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] e5a407a305c02aa7062e8a37b4bdac8c0784e11baed631708e242640dd384a28 [INFO] running `Command { std: "docker" "start" "-a" "e5a407a305c02aa7062e8a37b4bdac8c0784e11baed631708e242640dd384a28", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e5a407a305c02aa7062e8a37b4bdac8c0784e11baed631708e242640dd384a28", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e5a407a305c02aa7062e8a37b4bdac8c0784e11baed631708e242640dd384a28", kill_on_drop: false }` [INFO] [stdout] e5a407a305c02aa7062e8a37b4bdac8c0784e11baed631708e242640dd384a28 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 554dc440c46dc3ea21f04e6758823059155d8224614af7ec21ed576a9382f2ee [INFO] running `Command { std: "docker" "start" "-a" "554dc440c46dc3ea21f04e6758823059155d8224614af7ec21ed576a9382f2ee", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v0.1.8 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Compiling num-traits v0.2.18 [INFO] [stderr] Checking iana-time-zone v0.1.60 [INFO] [stderr] Checking log v0.4.21 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking remove_dir_all v0.5.3 [INFO] [stderr] Compiling rand_pcg v0.1.2 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.4 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking uuid v0.7.4 [INFO] [stderr] Checking chrono v0.4.37 [INFO] [stderr] Checking serde_json v1.0.115 [INFO] [stderr] Checking bincode v1.3.3 [INFO] [stderr] Checking ron v0.4.2 [INFO] [stderr] Checking mycelium_command v0.1.1 [INFO] [stderr] Checking fern v0.5.9 [INFO] [stderr] Checking mycelium_core v0.1.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `uuid` is imported redundantly [INFO] [stdout] --> src/system.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use uuid; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:11:1 [INFO] [stdout] | [INFO] [stdout] 11 | extern crate uuid; [INFO] [stdout] | ------------------ the item `uuid` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `uuid` is imported redundantly [INFO] [stdout] --> src/system.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use uuid; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:11:1 [INFO] [stdout] | [INFO] [stdout] 11 | extern crate uuid; [INFO] [stdout] | ------------------ the item `uuid` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around match arm expression [INFO] [stdout] --> src/tests.rs:44:19 [INFO] [stdout] | [INFO] [stdout] 44 | Err(e) => (assert!(false, format!("Failure list_tags_test(): {:?}", e))), [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 44 - Err(e) => (assert!(false, format!("Failure list_tags_test(): {:?}", e))), [INFO] [stdout] 44 + Err(e) => assert!(false, format!("Failure list_tags_test(): {:?}", e)), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/persistence/mod.rs:88:15 [INFO] [stdout] | [INFO] [stdout] 88 | e.description() [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/lib.rs:454:52 [INFO] [stdout] | [INFO] [stdout] 454 | error!("Error loading tags: {}", e.description()); [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/persistence/mod.rs:88:15 [INFO] [stdout] | [INFO] [stdout] 88 | e.description() [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/lib.rs:641:65 [INFO] [stdout] | [INFO] [stdout] 641 | Err(e) => panic!("File permission check failure: {}", e.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/lib.rs:454:52 [INFO] [stdout] | [INFO] [stdout] 454 | error!("Error loading tags: {}", e.description()); [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/lib.rs:641:65 [INFO] [stdout] | [INFO] [stdout] 641 | Err(e) => panic!("File permission check failure: {}", e.description()), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `dirty` is never read [INFO] [stdout] --> src/ephemeral/page.rs:39:5 [INFO] [stdout] | [INFO] [stdout] 37 | pub struct Page { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 38 | #[serde(skip)] [INFO] [stdout] 39 | dirty: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Page` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/core.rs:38:26 [INFO] [stdout] | [INFO] [stdout] 38 | Err(e) => panic!(format!("Poison RwLock core::p_append(): {:?}", e)), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 38 - Err(e) => panic!(format!("Poison RwLock core::p_append(): {:?}", e)), [INFO] [stdout] 38 + Err(e) => panic!("Poison RwLock core::p_append(): {:?}", e), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/core.rs:52:26 [INFO] [stdout] | [INFO] [stdout] 52 | Err(e) => panic!(format!("Poison mutex core::p_append(): {:?}", e)), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 52 - Err(e) => panic!(format!("Poison mutex core::p_append(): {:?}", e)), [INFO] [stdout] 52 + Err(e) => panic!("Poison mutex core::p_append(): {:?}", e), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/persistence/mod.rs:65:34 [INFO] [stdout] | [INFO] [stdout] 65 | Err(e) => panic!(format!("{:?}", e)), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 65 - Err(e) => panic!(format!("{:?}", e)), [INFO] [stdout] 65 + Err(e) => panic!("{:?}", e), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `dirty` is never read [INFO] [stdout] --> src/ephemeral/page.rs:39:5 [INFO] [stdout] | [INFO] [stdout] 37 | pub struct Page { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] 38 | #[serde(skip)] [INFO] [stdout] 39 | dirty: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Page` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/core.rs:38:26 [INFO] [stdout] | [INFO] [stdout] 38 | Err(e) => panic!(format!("Poison RwLock core::p_append(): {:?}", e)), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 38 - Err(e) => panic!(format!("Poison RwLock core::p_append(): {:?}", e)), [INFO] [stdout] 38 + Err(e) => panic!("Poison RwLock core::p_append(): {:?}", e), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/core.rs:52:26 [INFO] [stdout] | [INFO] [stdout] 52 | Err(e) => panic!(format!("Poison mutex core::p_append(): {:?}", e)), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 52 - Err(e) => panic!(format!("Poison mutex core::p_append(): {:?}", e)), [INFO] [stdout] 52 + Err(e) => panic!("Poison mutex core::p_append(): {:?}", e), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/persistence/mod.rs:65:34 [INFO] [stdout] | [INFO] [stdout] 65 | Err(e) => panic!(format!("{:?}", e)), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `panic!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 65 - Err(e) => panic!(format!("{:?}", e)), [INFO] [stdout] 65 + Err(e) => panic!("{:?}", e), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/tests.rs:44:35 [INFO] [stdout] | [INFO] [stdout] 44 | Err(e) => (assert!(false, format!("Failure list_tags_test(): {:?}", e))), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `assert!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `assert!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 44 - Err(e) => (assert!(false, format!("Failure list_tags_test(): {:?}", e))), [INFO] [stdout] 44 + Err(e) => (assert!(false, "Failure list_tags_test(): {:?}", e)), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/tests.rs:69:34 [INFO] [stdout] | [INFO] [stdout] 69 | Err(e) => assert!(false, format!("Failure refresh_test(): {:?}", e)), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `assert!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: the `assert!()` macro supports formatting, so there's no need for the `format!()` macro here [INFO] [stdout] help: remove the `format!(..)` macro call [INFO] [stdout] | [INFO] [stdout] 69 - Err(e) => assert!(false, format!("Failure refresh_test(): {:?}", e)), [INFO] [stdout] 69 + Err(e) => assert!(false, "Failure refresh_test(): {:?}", e), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.09s [INFO] running `Command { std: "docker" "inspect" "554dc440c46dc3ea21f04e6758823059155d8224614af7ec21ed576a9382f2ee", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "554dc440c46dc3ea21f04e6758823059155d8224614af7ec21ed576a9382f2ee", kill_on_drop: false }` [INFO] [stdout] 554dc440c46dc3ea21f04e6758823059155d8224614af7ec21ed576a9382f2ee