[INFO] cloning repository https://github.com/kungfucop/learnrust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kungfucop/learnrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkungfucop%2Flearnrust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkungfucop%2Flearnrust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 32196911f8c4a6b2bca270b67a25078567b89b2e [INFO] testing kungfucop/learnrust against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkungfucop%2Flearnrust" "/workspace/builds/worker-5/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kungfucop/learnrust on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/kungfucop/learnrust [INFO] finished tweaking git repo https://github.com/kungfucop/learnrust [INFO] tweaked toml for git repo https://github.com/kungfucop/learnrust written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/kungfucop/learnrust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 888d5b09456a7b5ca763296a8f66de5739f62c04ca07a9371e0e7f4b122cf6e1 [INFO] running `Command { std: "docker" "start" "-a" "888d5b09456a7b5ca763296a8f66de5739f62c04ca07a9371e0e7f4b122cf6e1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "888d5b09456a7b5ca763296a8f66de5739f62c04ca07a9371e0e7f4b122cf6e1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "888d5b09456a7b5ca763296a8f66de5739f62c04ca07a9371e0e7f4b122cf6e1", kill_on_drop: false }` [INFO] [stdout] 888d5b09456a7b5ca763296a8f66de5739f62c04ca07a9371e0e7f4b122cf6e1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 43da04d137d1d070fdd14af1403b27f5e8469c307d5e5978777abf69f94c9d59 [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" "43da04d137d1d070fdd14af1403b27f5e8469c307d5e5978777abf69f94c9d59", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.55 [INFO] [stderr] Compiling cc v1.0.37 [INFO] [stderr] Compiling cfg-if v0.1.9 [INFO] [stderr] Compiling rustc-demangle v0.1.14 [INFO] [stderr] Compiling backtrace v0.3.26 [INFO] [stderr] Compiling backtrace-sys v0.1.28 [INFO] [stderr] Compiling atty v0.2.11 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling error-chain v0.10.0 [INFO] [stderr] Compiling ferris-says v0.1.1 [INFO] [stderr] Compiling Rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0583]: file not found for module `LearnErrorHandling` [INFO] [stdout] --> src/main.rs:8:1 [INFO] [stdout] | [INFO] [stdout] 8 | mod LearnErrorHandling; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: to create the module `LearnErrorHandling`, create file "src/LearnErrorHandling.rs" or "src/LearnErrorHandling/mod.rs" [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `core::fmt::Alignment::Left` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use core::fmt::Alignment::Left; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around method argument [INFO] [stdout] --> src/LearnIterator.rs:45:32 [INFO] [stdout] | [INFO] [stdout] 45 | let result = v.iter().find((|idx| { *idx % 2 == 0 })); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 45 - let result = v.iter().find((|idx| { *idx % 2 == 0 })); [INFO] [stdout] 45 + let result = v.iter().find(|idx| { *idx % 2 == 0 }); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::string::ToString` [INFO] [stdout] --> src/LearnTrait.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::string::ToString; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/LearnTrait.rs:60:27 [INFO] [stdout] | [INFO] [stdout] 60 | traitReferenceSummary((student)) [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 60 - traitReferenceSummary((student)) [INFO] [stdout] 60 + traitReferenceSummary(student) [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/LearnTrait.rs:115:17 [INFO] [stdout] | [INFO] [stdout] 115 | fn foo() -> Box i32> { [INFO] [stdout] | ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32` [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 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/Closure.rs:48:37 [INFO] [stdout] | [INFO] [stdout] 48 | fn call_with_one(some_closure: &Fn(i32) -> i32) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32` [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 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/Closure.rs:62:32 [INFO] [stdout] | [INFO] [stdout] 62 | fn callClousure(clousure: &Fn(i32) -> i32) -> i32 { [INFO] [stdout] | ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32` [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 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/Closure.rs:72:25 [INFO] [stdout] | [INFO] [stdout] 72 | fn factory() -> Box i32> { [INFO] [stdout] | ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32` [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 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0583`. [INFO] [stdout] [INFO] [stderr] error: could not compile `Rust` due to 2 previous errors; 8 warnings emitted [INFO] running `Command { std: "docker" "inspect" "43da04d137d1d070fdd14af1403b27f5e8469c307d5e5978777abf69f94c9d59", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "43da04d137d1d070fdd14af1403b27f5e8469c307d5e5978777abf69f94c9d59", kill_on_drop: false }` [INFO] [stdout] 43da04d137d1d070fdd14af1403b27f5e8469c307d5e5978777abf69f94c9d59