[INFO] fetching crate mylogger 0.2.3...
[INFO] checking mylogger-0.2.3 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate mylogger 0.2.3 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate mylogger 0.2.3 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mylogger 0.2.3
[INFO] finished tweaking crates.io crate mylogger 0.2.3
[INFO] tweaked toml for crates.io crate mylogger 0.2.3 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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] e92115c3be80a982e405142244d06fbd2e6c9c52cf73db275ca8c913f208026f
[INFO] running `Command { std: "docker" "start" "-a" "e92115c3be80a982e405142244d06fbd2e6c9c52cf73db275ca8c913f208026f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e92115c3be80a982e405142244d06fbd2e6c9c52cf73db275ca8c913f208026f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e92115c3be80a982e405142244d06fbd2e6c9c52cf73db275ca8c913f208026f", kill_on_drop: false }`
[INFO] [stdout] e92115c3be80a982e405142244d06fbd2e6c9c52cf73db275ca8c913f208026f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6bca371d07d648f5691710df5ae41060451e17105df67f19b32716346aa62eab
[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" "6bca371d07d648f5691710df5ae41060451e17105df67f19b32716346aa62eab", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking arc-swap v0.4.7
[INFO] [stderr]     Checking pin-project-lite v0.1.7
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking signal-hook-registry v1.2.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking mylogger v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `LevelFilter`, `RecordBuilder`, `info`
[INFO] [stdout]   --> src/lib.rs:84:11
[INFO] [stdout]    |
[INFO] [stdout] 84 | use log::{info, Level, LevelFilter, Log, Metadata, Record, RecordBuilder};
[INFO] [stdout]    |           ^^^^         ^^^^^^^^^^^                         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`
[INFO] [stdout]   --> src/lib.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 | use std::sync::{Arc, Mutex};
[INFO] [stdout]    |                 ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/lib.rs:86:5
[INFO] [stdout]    |
[INFO] [stdout] 86 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration`, `Instant`
[INFO] [stdout]   --> src/lib.rs:87:17
[INFO] [stdout]    |
[INFO] [stdout] 87 | use std::time::{Duration, Instant};
[INFO] [stdout]    |                 ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::runtime::Runtime`
[INFO] [stdout]   --> src/lib.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 | use tokio::runtime::Runtime;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `AsyncDefaultHandler`
[INFO] [stdout]   --> src/lib.rs:94:25
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let async_handler = AsyncDefaultHandler::new(Level::Info, "async".to_string());
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^ use of undeclared type or module `AsyncDefaultHandler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RecordBuilder`
[INFO] [stdout]   --> src/lib.rs:84:60
[INFO] [stdout]    |
[INFO] [stdout] 84 | use log::{info, Level, LevelFilter, Log, Metadata, Record, RecordBuilder};
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `meta`
[INFO] [stdout]    --> src/lib.rs:156:24
[INFO] [stdout]     |
[INFO] [stdout] 156 |     fn activate(&self, meta: &Metadata) -> bool {
[INFO] [stdout]     |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_meta`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `record`
[INFO] [stdout]    --> src/lib.rs:159:19
[INFO] [stdout]     |
[INFO] [stdout] 159 |     fn log(&self, record: &Record, logger: &MyLogger) {}
[INFO] [stdout]     |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_record`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logger`
[INFO] [stdout]    --> src/lib.rs:159:36
[INFO] [stdout]     |
[INFO] [stdout] 159 |     fn log(&self, record: &Record, logger: &MyLogger) {}
[INFO] [stdout]     |                                    ^^^^^^ help: if this is intentional, prefix it with an underscore: `_logger`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `logger`
[INFO] [stdout]    --> src/lib.rs:160:29
[INFO] [stdout]     |
[INFO] [stdout] 160 |     fn format_record(&self, logger: &MyLogger, record: &Record) -> String {
[INFO] [stdout]     |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_logger`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `level`
[INFO] [stdout]    --> src/lib.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let level = Level::Info;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_level`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `metadata`
[INFO] [stdout]    --> src/lib.rs:132:23
[INFO] [stdout]     |
[INFO] [stdout] 132 |     fn enabled(&self, metadata: &Metadata) -> bool {
[INFO] [stdout]     |                       ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_metadata`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`
[INFO] [stdout]   --> src/lib.rs:85:17
[INFO] [stdout]    |
[INFO] [stdout] 85 | use std::sync::{Arc, Mutex};
[INFO] [stdout]    |                 ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Instant`
[INFO] [stdout]   --> src/lib.rs:87:27
[INFO] [stdout]    |
[INFO] [stdout] 87 | use std::time::{Duration, Instant};
[INFO] [stdout]    |                           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::runtime::Runtime`
[INFO] [stdout]   --> src/lib.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 89 | use tokio::runtime::Runtime;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mylogger`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6bca371d07d648f5691710df5ae41060451e17105df67f19b32716346aa62eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bca371d07d648f5691710df5ae41060451e17105df67f19b32716346aa62eab", kill_on_drop: false }`
[INFO] [stdout] 6bca371d07d648f5691710df5ae41060451e17105df67f19b32716346aa62eab