[INFO] fetching crate mod_logger 0.8.1...
[INFO] checking mod_logger-0.8.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate mod_logger 0.8.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate mod_logger 0.8.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mod_logger 0.8.1
[INFO] finished tweaking crates.io crate mod_logger 0.8.1
[INFO] tweaked toml for crates.io crate mod_logger 0.8.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate mod_logger 0.8.1 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded linked-hash-map v0.5.3
[INFO] [stderr]   Downloaded serde_yaml v0.8.12
[INFO] [stderr]   Downloaded yaml-rust v0.4.3
[INFO] [stderr]   Downloaded serde_derive v1.0.110
[INFO] [stderr]   Downloaded serde v1.0.110
[INFO] [stderr]   Downloaded syn v1.0.19
[INFO] [stderr]   Downloaded memchr v2.3.3
[INFO] [stderr]   Downloaded redox_termios v0.1.1
[INFO] [stderr]   Downloaded regex-syntax v0.6.17
[INFO] [stderr]   Downloaded regex v1.3.7
[INFO] [stderr]   Downloaded aho-corasick v0.7.10
[INFO] [stderr]   Downloaded termion v1.5.5
[INFO] [stderr]   Downloaded colored v1.9.3
[INFO] [stderr]   Downloaded thread_local v1.0.1
[INFO] [stderr]   Downloaded dtoa v0.4.5
[INFO] [stderr]   Downloaded proc-macro2 v1.0.12
[INFO] [stderr]   Downloaded quote v1.0.4
[INFO] [stderr]   Downloaded atty v0.2.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d90d1df593244dce1e22ece3aab9c3b8c17223b61b9a9fa8c0b735d1576cffed
[INFO] running `Command { std: "docker" "start" "-a" "d90d1df593244dce1e22ece3aab9c3b8c17223b61b9a9fa8c0b735d1576cffed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d90d1df593244dce1e22ece3aab9c3b8c17223b61b9a9fa8c0b735d1576cffed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d90d1df593244dce1e22ece3aab9c3b8c17223b61b9a9fa8c0b735d1576cffed", kill_on_drop: false }`
[INFO] [stdout] d90d1df593244dce1e22ece3aab9c3b8c17223b61b9a9fa8c0b735d1576cffed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42c2f762f66ec8b668c0efe5648e7c42910fbbddd63a38c54651c91f3f809535
[INFO] running `Command { std: "docker" "start" "-a" "42c2f762f66ec8b668c0efe5648e7c42910fbbddd63a38c54651c91f3f809535", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking mod_logger v0.8.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `error`, `error_with_all`, and `error_with_kind` are never used
[INFO] [stdout]    --> src/error.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 135 | pub trait ToError<T> {
[INFO] [stdout]     |           ------- methods in this trait
[INFO] [stdout] 136 |     fn error(self) -> Result<T>;
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 137 |     fn upstream_with_context(self, context: &str) -> Result<T>;
[INFO] [stdout] 138 |     fn error_with_all(self, kind: ErrorKind, context: &str) -> Result<T>;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 139 |     fn error_with_kind(self, kind: ErrorKind) -> Result<T>;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `error`, `error_with_all`, and `error_with_kind` are never used
[INFO] [stdout]    --> src/error.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 135 | pub trait ToError<T> {
[INFO] [stdout]     |           ------- methods in this trait
[INFO] [stdout] 136 |     fn error(self) -> Result<T>;
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 137 |     fn upstream_with_context(self, context: &str) -> Result<T>;
[INFO] [stdout] 138 |     fn error_with_all(self, kind: ErrorKind, context: &str) -> Result<T>;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 139 |     fn error_with_kind(self, kind: ErrorKind) -> Result<T>;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.61s
[INFO] running `Command { std: "docker" "inspect" "42c2f762f66ec8b668c0efe5648e7c42910fbbddd63a38c54651c91f3f809535", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42c2f762f66ec8b668c0efe5648e7c42910fbbddd63a38c54651c91f3f809535", kill_on_drop: false }`
[INFO] [stdout] 42c2f762f66ec8b668c0efe5648e7c42910fbbddd63a38c54651c91f3f809535