[INFO] fetching crate fakelogs 0.1.10-75501d4...
[INFO] checking fakelogs-0.1.10-75501d4 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate fakelogs 0.1.10-75501d4 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate fakelogs 0.1.10-75501d4
[INFO] finished tweaking crates.io crate fakelogs 0.1.10-75501d4
[INFO] tweaked toml for crates.io crate fakelogs 0.1.10-75501d4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fakelogs 0.1.10-75501d4 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fakelogs 0.1.10-75501d4 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 047577a65cb787a1a127bab74c10d17e7589646781943e2230d8afc11acaca3b
[INFO] running `Command { std: "docker" "start" "-a" "047577a65cb787a1a127bab74c10d17e7589646781943e2230d8afc11acaca3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "047577a65cb787a1a127bab74c10d17e7589646781943e2230d8afc11acaca3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "047577a65cb787a1a127bab74c10d17e7589646781943e2230d8afc11acaca3b", kill_on_drop: false }`
[INFO] [stdout] 047577a65cb787a1a127bab74c10d17e7589646781943e2230d8afc11acaca3b
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41a2e4002bb6c4cd2e918d2a05a9aa7fb86ce620dc4f3588ffc131fd368d7354
[INFO] running `Command { std: "docker" "start" "-a" "41a2e4002bb6c4cd2e918d2a05a9aa7fb86ce620dc4f3588ffc131fd368d7354", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking ticker v0.1.1
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking fakelogs v0.1.10-75501d4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: `RefCell<LineWriter<std::io::stdio::StdoutRaw>>` cannot be shared between threads safely
[INFO] [stdout]   --> src/lib.rs:47:29
[INFO] [stdout]    |
[INFO] [stdout] 47 |             r = l.write_csv(handle.borrow_mut());
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^ `RefCell<LineWriter<std::io::stdio::StdoutRaw>>` cannot be shared between threads safely
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Sync` is not implemented for `RefCell<LineWriter<std::io::stdio::StdoutRaw>>`
[INFO] [stdout]    = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
[INFO] [stdout]    = note: required for `ReentrantLockGuard<'_, RefCell<LineWriter<std::io::stdio::StdoutRaw>>>` to implement `Sync`
[INFO] [stdout] note: required because it appears within the type `StdoutLock<'_>`
[INFO] [stdout]   --> /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/io/stdio.rs:640:12
[INFO] [stdout]    = note: required for the cast from `&mut StdoutLock<'_>` to `&mut dyn std::io::Write + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `RefCell<LineWriter<std::io::stdio::StdoutRaw>>` cannot be shared between threads safely
[INFO] [stdout]   --> src/lib.rs:49:36
[INFO] [stdout]    |
[INFO] [stdout] 49 |             r = l.write_common_log(handle.borrow_mut());
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^ `RefCell<LineWriter<std::io::stdio::StdoutRaw>>` cannot be shared between threads safely
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Sync` is not implemented for `RefCell<LineWriter<std::io::stdio::StdoutRaw>>`
[INFO] [stdout]    = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
[INFO] [stdout]    = note: required for `ReentrantLockGuard<'_, RefCell<LineWriter<std::io::stdio::StdoutRaw>>>` to implement `Sync`
[INFO] [stdout] note: required because it appears within the type `StdoutLock<'_>`
[INFO] [stdout]   --> /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/io/stdio.rs:640:12
[INFO] [stdout]    = note: required for the cast from `&mut StdoutLock<'_>` to `&mut dyn std::io::Write + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fakelogs` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0277]: `RefCell<LineWriter<std::io::stdio::StdoutRaw>>` cannot be shared between threads safely
[INFO] [stdout]   --> src/lib.rs:47:29
[INFO] [stdout]    |
[INFO] [stdout] 47 |             r = l.write_csv(handle.borrow_mut());
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^ `RefCell<LineWriter<std::io::stdio::StdoutRaw>>` cannot be shared between threads safely
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Sync` is not implemented for `RefCell<LineWriter<std::io::stdio::StdoutRaw>>`
[INFO] [stdout]    = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
[INFO] [stdout]    = note: required for `ReentrantLockGuard<'_, RefCell<LineWriter<std::io::stdio::StdoutRaw>>>` to implement `Sync`
[INFO] [stdout] note: required because it appears within the type `StdoutLock<'_>`
[INFO] [stdout]   --> /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/io/stdio.rs:640:12
[INFO] [stdout]    = note: required for the cast from `&mut StdoutLock<'_>` to `&mut dyn std::io::Write + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `RefCell<LineWriter<std::io::stdio::StdoutRaw>>` cannot be shared between threads safely
[INFO] [stdout]   --> src/lib.rs:49:36
[INFO] [stdout]    |
[INFO] [stdout] 49 |             r = l.write_common_log(handle.borrow_mut());
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^ `RefCell<LineWriter<std::io::stdio::StdoutRaw>>` cannot be shared between threads safely
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `Sync` is not implemented for `RefCell<LineWriter<std::io::stdio::StdoutRaw>>`
[INFO] [stdout]    = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
[INFO] [stdout]    = note: required for `ReentrantLockGuard<'_, RefCell<LineWriter<std::io::stdio::StdoutRaw>>>` to implement `Sync`
[INFO] [stdout] note: required because it appears within the type `StdoutLock<'_>`
[INFO] [stdout]   --> /rustc/998b6603a58e47f42ccce7a67943234e96b6839e/library/std/src/io/stdio.rs:640:12
[INFO] [stdout]    = note: required for the cast from `&mut StdoutLock<'_>` to `&mut dyn std::io::Write + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fakelogs` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "41a2e4002bb6c4cd2e918d2a05a9aa7fb86ce620dc4f3588ffc131fd368d7354", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41a2e4002bb6c4cd2e918d2a05a9aa7fb86ce620dc4f3588ffc131fd368d7354", kill_on_drop: false }`
[INFO] [stdout] 41a2e4002bb6c4cd2e918d2a05a9aa7fb86ce620dc4f3588ffc131fd368d7354