[INFO] cloning repository https://github.com/devashishkatoriya/rust_basics [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/devashishkatoriya/rust_basics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdevashishkatoriya%2Frust_basics", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdevashishkatoriya%2Frust_basics'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8d511ad5e465e07fdc6bec9d942f79acecad04f3 [INFO] checking devashishkatoriya/rust_basics against try#4e55a504843955c97eb06907c71f6f3e99208021 for pr-146978 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdevashishkatoriya%2Frust_basics" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/devashishkatoriya/rust_basics [INFO] finished tweaking git repo https://github.com/devashishkatoriya/rust_basics [INFO] tweaked toml for git repo https://github.com/devashishkatoriya/rust_basics written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/devashishkatoriya/rust_basics on toolchain 4e55a504843955c97eb06907c71f6f3e99208021 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/devashishkatoriya/rust_basics 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" "+4e55a504843955c97eb06907c71f6f3e99208021" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 2f3ed156b0d83985d4a6899e300dc85806d9a0607249a4c232fd8db664dd671f [INFO] running `Command { std: "docker" "start" "-a" "2f3ed156b0d83985d4a6899e300dc85806d9a0607249a4c232fd8db664dd671f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "2f3ed156b0d83985d4a6899e300dc85806d9a0607249a4c232fd8db664dd671f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2f3ed156b0d83985d4a6899e300dc85806d9a0607249a4c232fd8db664dd671f", kill_on_drop: false }` [INFO] [stdout] 2f3ed156b0d83985d4a6899e300dc85806d9a0607249a4c232fd8db664dd671f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4e55a504843955c97eb06907c71f6f3e99208021" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ac87a995abd92ed5fce055e1dbf8788a5ae9f7d2468dfeb7afb4f990dd6e2e27 [INFO] running `Command { std: "docker" "start" "-a" "ac87a995abd92ed5fce055e1dbf8788a5ae9f7d2468dfeb7afb4f990dd6e2e27", kill_on_drop: false }` [INFO] [stderr] Checking import_files v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/files.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | let mut data = read_file(path); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/files.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | let mut data = read_file(path); [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0381]: used binding `temp` isn't initialized [INFO] [stdout] --> src/files.rs:36:9 [INFO] [stdout] | [INFO] [stdout] 32 | let mut temp: String; [INFO] [stdout] | -------- binding declared here but left uninitialized [INFO] [stdout] ... [INFO] [stdout] 36 | temp.push_str(&line?); [INFO] [stdout] | ^^^^ `temp` used here but it isn't initialized [INFO] [stdout] | [INFO] [stdout] help: consider assigning a value [INFO] [stdout] | [INFO] [stdout] 32 | let mut temp: String = Default::default(); [INFO] [stdout] | ++++++++++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0382]: use of moved value: `line` [INFO] [stdout] --> src/files.rs:36:24 [INFO] [stdout] | [INFO] [stdout] 34 | for line in buffered.lines() { [INFO] [stdout] | ---- move occurs because `line` has type `Result`, which does not implement the `Copy` trait [INFO] [stdout] 35 | println!("{}", line?); [INFO] [stdout] | ----- `line` moved due to this method call [INFO] [stdout] 36 | temp.push_str(&line?); [INFO] [stdout] | ^^^^ value used here after move [INFO] [stdout] | [INFO] [stdout] note: `branch` takes ownership of the receiver `self`, which moves `line` [INFO] [stdout] --> /rustc/4e55a504843955c97eb06907c71f6f3e99208021/library/core/src/ops/try_trait.rs:218:15 [INFO] [stdout] help: you could `clone` the value and consume it, if the `std::io::Error: Clone` trait bound could be satisfied [INFO] [stdout] | [INFO] [stdout] 35 | println!("{}", line.clone()?); [INFO] [stdout] | ++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0381]: used binding `temp` isn't initialized [INFO] [stdout] --> src/files.rs:36:9 [INFO] [stdout] | [INFO] [stdout] 32 | let mut temp: String; [INFO] [stdout] | -------- binding declared here but left uninitialized [INFO] [stdout] ... [INFO] [stdout] 36 | temp.push_str(&line?); [INFO] [stdout] | ^^^^ `temp` used here but it isn't initialized [INFO] [stdout] | [INFO] [stdout] help: consider assigning a value [INFO] [stdout] | [INFO] [stdout] 32 | let mut temp: String = Default::default(); [INFO] [stdout] | ++++++++++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0382]: use of moved value: `line` [INFO] [stdout] --> src/files.rs:36:24 [INFO] [stdout] | [INFO] [stdout] 34 | for line in buffered.lines() { [INFO] [stdout] | ---- move occurs because `line` has type `Result`, which does not implement the `Copy` trait [INFO] [stdout] 35 | println!("{}", line?); [INFO] [stdout] | ----- `line` moved due to this method call [INFO] [stdout] 36 | temp.push_str(&line?); [INFO] [stdout] | ^^^^ value used here after move [INFO] [stdout] | [INFO] [stdout] note: `branch` takes ownership of the receiver `self`, which moves `line` [INFO] [stdout] --> /rustc/4e55a504843955c97eb06907c71f6f3e99208021/library/core/src/ops/try_trait.rs:218:15 [INFO] [stdout] help: you could `clone` the value and consume it, if the `std::io::Error: Clone` trait bound could be satisfied [INFO] [stdout] | [INFO] [stdout] 35 | println!("{}", line.clone()?); [INFO] [stdout] | ++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0381, E0382. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0381`. [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0381, E0382. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0381`. [INFO] [stdout] [INFO] [stderr] error: could not compile `import_files` (bin "import_files" test) due to 2 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `import_files` (bin "import_files") due to 2 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "ac87a995abd92ed5fce055e1dbf8788a5ae9f7d2468dfeb7afb4f990dd6e2e27", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ac87a995abd92ed5fce055e1dbf8788a5ae9f7d2468dfeb7afb4f990dd6e2e27", kill_on_drop: false }` [INFO] [stdout] ac87a995abd92ed5fce055e1dbf8788a5ae9f7d2468dfeb7afb4f990dd6e2e27