[INFO] cloning repository https://github.com/t-xinlin/ilearning-rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/t-xinlin/ilearning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft-xinlin%2Filearning-rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft-xinlin%2Filearning-rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 99885becc94ba9b3209dee39d361985675105f1c [INFO] checking t-xinlin/ilearning-rust against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft-xinlin%2Filearning-rust" "/workspace/builds/worker-1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/t-xinlin/ilearning-rust on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/t-xinlin/ilearning-rust [INFO] finished tweaking git repo https://github.com/t-xinlin/ilearning-rust [INFO] tweaked toml for git repo https://github.com/t-xinlin/ilearning-rust written to /workspace/builds/worker-1/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded rsa v0.4.1 [INFO] [stderr] Downloaded crypto v0.2.0 [INFO] [stderr] Downloaded html-escape v0.2.9 [INFO] [stderr] Downloaded url_encoded_data v0.6.1 [INFO] [stderr] Downloaded cron v0.8.0 [INFO] [stderr] Downloaded url-escape v0.1.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fbba6a1a3ed6b114db6504ea89823d273443b38325130b70aedad53a41d5f8ab [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "fbba6a1a3ed6b114db6504ea89823d273443b38325130b70aedad53a41d5f8ab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fbba6a1a3ed6b114db6504ea89823d273443b38325130b70aedad53a41d5f8ab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fbba6a1a3ed6b114db6504ea89823d273443b38325130b70aedad53a41d5f8ab", kill_on_drop: false }` [INFO] [stdout] fbba6a1a3ed6b114db6504ea89823d273443b38325130b70aedad53a41d5f8ab [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1111824fb6f7e496523443d70e17ecf4a11bbd6cde2451d5e5bba72a24a64b80 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "1111824fb6f7e496523443d70e17ecf4a11bbd6cde2451d5e5bba72a24a64b80", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling syn v1.0.74 [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling serde_derive v1.0.126 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling futures-core v0.3.16 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking futures-io v0.3.16 [INFO] [stderr] Compiling futures-task v0.3.16 [INFO] [stderr] Compiling futures-channel v0.3.16 [INFO] [stderr] Compiling crossbeam-utils v0.8.5 [INFO] [stderr] Checking futures-sink v0.3.16 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Compiling cache-padded v1.1.1 [INFO] [stderr] Compiling waker-fn v1.1.0 [INFO] [stderr] Compiling fastrand v1.5.0 [INFO] [stderr] Compiling event-listener v2.5.1 [INFO] [stderr] Compiling parking v2.0.0 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Compiling async-task v4.0.3 [INFO] [stderr] Compiling const_fn v0.4.8 [INFO] [stderr] Compiling foreign-types-shared v0.1.1 [INFO] [stderr] Compiling atomic-waker v1.0.0 [INFO] [stderr] Checking traitobject v0.1.0 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Compiling arrayvec v0.5.2 [INFO] [stderr] Compiling byteorder v1.4.3 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Checking futures-sink-preview v0.3.0-alpha.19 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.19 [INFO] [stderr] Checking gimli v0.25.0 [INFO] [stderr] Checking utf8-width v0.1.5 [INFO] [stderr] Checking rustc-demangle v0.1.20 [INFO] [stderr] Checking urlencoding v1.3.3 [INFO] [stderr] Checking nom v1.2.4 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking paw-raw v1.0.0 [INFO] [stderr] Checking data-encoding v2.3.2 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Checking crypto v0.2.0 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking mutex-rwLock v0.1.0 (/opt/rustwide/workdir/mutex-rwLock) [INFO] [stderr] Checking map-rs v0.1.0 (/opt/rustwide/workdir/map-rs) [INFO] [stderr] Checking error-rs v0.1.0 (/opt/rustwide/workdir/error-rs) [INFO] [stderr] Checking list v0.1.0 (/opt/rustwide/workdir/list) [INFO] [stderr] Checking trait-rs v0.1.0 (/opt/rustwide/workdir/trait-rs) [INFO] [stdout] warning: unused import: `std::rc::Rc` [INFO] [stdout] --> mutex-rwLock/src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::rc::Rc; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking macro-rules v0.1.0 (/opt/rustwide/workdir/macro-rules) [INFO] [stdout] warning: unused import: `std::num` [INFO] [stdout] --> error-rs/src/main.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | use std::num; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> error-rs/src/main.rs:69:48 [INFO] [stdout] | [INFO] [stdout] 69 | type ResultBox = std::result::Result>; [INFO] [stdout] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> error-rs/src/main.rs:85:32 [INFO] [stdout] | [INFO] [stdout] 85 | fn cause(&self) -> Option<&error::Error> { [INFO] [stdout] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking borrowing-rs v0.1.0 (/opt/rustwide/workdir/borrowing-rs) [INFO] [stdout] error[E0119]: conflicting implementations of trait `std::convert::From` for type `DoubleError` [INFO] [stdout] --> error-rs/src/main.rs:97:1 [INFO] [stdout] | [INFO] [stdout] 97 | impl From for DoubleError { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: conflicting implementation in crate `core`: [INFO] [stdout] - impl From for T; [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> map-rs/src/main.rs:73:5 [INFO] [stdout] | [INFO] [stdout] 71 | return; [INFO] [stdout] | ------ any code following this expression is unreachable [INFO] [stdout] 72 | [INFO] [stdout] 73 | let it: Vec<_> = (0..20).map(|x| x + 1).collect(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `N` [INFO] [stdout] --> mutex-rwLock/src/main.rs:6:1 [INFO] [stdout] | [INFO] [stdout] 6 | const N: usize = 10; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `main1` [INFO] [stdout] --> mutex-rwLock/src/main.rs:7:4 [INFO] [stdout] | [INFO] [stdout] 7 | fn main1() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `mux` [INFO] [stdout] --> mutex-rwLock/src/main.rs:41:4 [INFO] [stdout] | [INFO] [stdout] 41 | fn mux() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0119`. [INFO] [stdout] [INFO] [stdout] warning: crate `mutex_rwLock` should have a snake case name [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] = help: convert the identifier to snake case: `mutex_rw_lock` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: structure field `Name` should have a snake case name [INFO] [stdout] --> map-rs/src/main.rs:55:5 [INFO] [stdout] | [INFO] [stdout] 55 | Name: String, [INFO] [stdout] | ^^^^ help: convert the identifier to snake case: `name` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: structure field `Age` should have a snake case name [INFO] [stdout] --> map-rs/src/main.rs:56:5 [INFO] [stdout] | [INFO] [stdout] 56 | Age: i32, [INFO] [stdout] | ^^^ help: convert the identifier to snake case: `age` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `error-rs` due to 2 previous errors; 3 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::num` [INFO] [stdout] --> error-rs/src/main.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | use std::num; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> error-rs/src/main.rs:69:48 [INFO] [stdout] | [INFO] [stdout] 69 | type ResultBox = std::result::Result>; [INFO] [stdout] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> error-rs/src/main.rs:85:32 [INFO] [stdout] | [INFO] [stdout] 85 | fn cause(&self) -> Option<&error::Error> { [INFO] [stdout] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0119]: conflicting implementations of trait `std::convert::From` for type `DoubleError` [INFO] [stdout] --> error-rs/src/main.rs:97:1 [INFO] [stdout] | [INFO] [stdout] 97 | impl From for DoubleError { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: conflicting implementation in crate `core`: [INFO] [stdout] - impl From for T; [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0119`. [INFO] [stdout] [INFO] [stdout] warning: function is never used: `eat_box_i32` [INFO] [stdout] --> borrowing-rs/src/main.rs:6:4 [INFO] [stdout] | [INFO] [stdout] 6 | fn eat_box_i32(boxed_i32: Box) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `borrow_i32` [INFO] [stdout] --> borrowing-rs/src/main.rs:11:4 [INFO] [stdout] | [INFO] [stdout] 11 | fn borrow_i32(borrowed_i32: &i32) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `main1` [INFO] [stdout] --> borrowing-rs/src/main.rs:15:4 [INFO] [stdout] | [INFO] [stdout] 15 | fn main1() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `borrow_book` [INFO] [stdout] --> borrowing-rs/src/main.rs:57:4 [INFO] [stdout] | [INFO] [stdout] 57 | fn borrow_book(book: &Book) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `new_edition` [INFO] [stdout] --> borrowing-rs/src/main.rs:62:4 [INFO] [stdout] | [INFO] [stdout] 62 | fn new_edition(book: &mut Book) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `main33` [INFO] [stdout] --> borrowing-rs/src/main.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn main33() { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `main2` [INFO] [stdout] --> borrowing-rs/src/main.rs:95:4 [INFO] [stdout] | [INFO] [stdout] 95 | fn main2() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Point` [INFO] [stdout] --> borrowing-rs/src/main.rs:117:8 [INFO] [stdout] | [INFO] [stdout] 117 | struct Point { x: i32, y: i32, z: i32 } [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `main4` [INFO] [stdout] --> borrowing-rs/src/main.rs:119:4 [INFO] [stdout] | [INFO] [stdout] 119 | fn main4() { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `x` [INFO] [stdout] --> borrowing-rs/src/main.rs:169:17 [INFO] [stdout] | [INFO] [stdout] 169 | struct Point2 { x: i32, y: i32 } [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `y` [INFO] [stdout] --> borrowing-rs/src/main.rs:169:25 [INFO] [stdout] | [INFO] [stdout] 169 | struct Point2 { x: i32, y: i32 } [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "1111824fb6f7e496523443d70e17ecf4a11bbd6cde2451d5e5bba72a24a64b80", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1111824fb6f7e496523443d70e17ecf4a11bbd6cde2451d5e5bba72a24a64b80", kill_on_drop: false }` [INFO] [stdout] 1111824fb6f7e496523443d70e17ecf4a11bbd6cde2451d5e5bba72a24a64b80