[INFO] updating cached repository https://github.com/iafisher/popquiz [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] [stderr] From https://github.com/iafisher/popquiz [INFO] [stderr] 6cff667..b4842bd master -> master [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] b4842bd64bbe3f6de0a10406850e18b4344b79ea [INFO] checking iafisher/popquiz against try#00e4530a79c42b21a6ca2ac1edb597c90d21f89f for pr-64672 [INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiafisher%2Fpopquiz" "work/builds/worker-3/source"` [INFO] [stderr] Cloning into 'work/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/iafisher/popquiz on toolchain 00e4530a79c42b21a6ca2ac1edb597c90d21f89f [INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/iafisher/popquiz [INFO] finished tweaking git repo https://github.com/iafisher/popquiz [INFO] tweaked toml for git repo https://github.com/iafisher/popquiz written to work/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/iafisher/popquiz already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 202d13ec39741c401f8f6095bb434d55d6b41de10257a5862c56ddec176b6d11 [INFO] running `"docker" "start" "-a" "202d13ec39741c401f8f6095bb434d55d6b41de10257a5862c56ddec176b6d11"` [INFO] [stderr] Compiling syn v0.15.35 [INFO] [stderr] Compiling winapi v0.3.7 [INFO] [stderr] Compiling nix v0.13.1 [INFO] [stderr] Checking rgb v0.8.13 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking term_size v0.3.1 [INFO] [stderr] Checking dirs v1.0.5 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking cgmath v0.16.1 [INFO] [stderr] Checking rustyline v4.1.0 [INFO] [stderr] Checking winconsole v0.10.0 [INFO] [stderr] Checking colored v1.8.0 [INFO] [stderr] Compiling serde_derive v1.0.92 [INFO] [stderr] Compiling structopt-derive v0.2.16 [INFO] [stderr] Checking structopt v0.2.16 [INFO] [stderr] Checking serde v1.0.101 [INFO] [stderr] Checking chrono v0.4.6 [INFO] [stderr] Checking serde_json v1.0.39 [INFO] [stderr] Checking popquiz v2.0.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/quiz.rs:918:32 [INFO] [stderr] | [INFO] [stderr] 918 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/quiz.rs:918:32 [INFO] [stderr] | [INFO] [stderr] 918 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `name` [INFO] [stderr] --> src/quiz.rs:684:5 [INFO] [stderr] | [INFO] [stderr] 684 | name: &str, path: &PathBuf, results_path: &PathBuf [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_name` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: cannot borrow `tags` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/main.rs:353:17 [INFO] [stderr] | [INFO] [stderr] 352 | if let Some(n) = tags.get(tag.as_str()) { [INFO] [stderr] | ---- immutable borrow occurs here [INFO] [stderr] 353 | tags.insert(tag.as_str(), n+1); [INFO] [stderr] | ^^^^ - immutable borrow later used here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] warning: unused variable: `name` [INFO] [stderr] --> src/quiz.rs:684:5 [INFO] [stderr] | [INFO] [stderr] 684 | name: &str, path: &PathBuf, results_path: &PathBuf [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_name` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: cannot borrow `tags` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/main.rs:353:17 [INFO] [stderr] | [INFO] [stderr] 352 | if let Some(n) = tags.get(tag.as_str()) { [INFO] [stderr] | ---- immutable borrow occurs here [INFO] [stderr] 353 | tags.insert(tag.as_str(), n+1); [INFO] [stderr] | ^^^^ - immutable borrow later used here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 11s [INFO] running `"docker" "inspect" "202d13ec39741c401f8f6095bb434d55d6b41de10257a5862c56ddec176b6d11"` [INFO] running `"docker" "rm" "-f" "202d13ec39741c401f8f6095bb434d55d6b41de10257a5862c56ddec176b6d11"` [INFO] [stdout] 202d13ec39741c401f8f6095bb434d55d6b41de10257a5862c56ddec176b6d11