[INFO] fetching crate func_trace 1.0.3... [INFO] checking func_trace-1.0.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate func_trace 1.0.3 into /workspace/builds/worker-3-tc1/source [INFO] validating manifest of crates.io crate func_trace 1.0.3 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-3-tc1/source/.cargo/config.toml [INFO] started tweaking crates.io crate func_trace 1.0.3 [INFO] finished tweaking crates.io crate func_trace 1.0.3 [INFO] tweaked toml for crates.io crate func_trace 1.0.3 written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate crates.io crate func_trace 1.0.3 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded gag v0.1.10 [INFO] [stderr] Downloaded env_logger v0.8.3 [INFO] [stderr] Downloaded libc v0.2.88 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e37a2351bc4ee1c1488c0e46bbb04b811255471a37c960ea046db32ffc5b20d1 [INFO] running `Command { std: "docker" "start" "-a" "e37a2351bc4ee1c1488c0e46bbb04b811255471a37c960ea046db32ffc5b20d1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e37a2351bc4ee1c1488c0e46bbb04b811255471a37c960ea046db32ffc5b20d1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e37a2351bc4ee1c1488c0e46bbb04b811255471a37c960ea046db32ffc5b20d1", kill_on_drop: false }` [INFO] [stdout] e37a2351bc4ee1c1488c0e46bbb04b811255471a37c960ea046db32ffc5b20d1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a927771eeaea7dbcfab339c0b7f7950b41a12e4a0667e118bebf779784f7c72f [INFO] running `Command { std: "docker" "start" "-a" "a927771eeaea7dbcfab339c0b7f7950b41a12e4a0667e118bebf779784f7c72f", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.88 [INFO] [stderr] Compiling syn v1.0.64 [INFO] [stderr] Checking unicode-xid v0.2.1 [INFO] [stderr] Checking regex-syntax v0.6.23 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking regex v1.4.5 [INFO] [stderr] Checking getrandom v0.2.2 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking rand_core v0.6.2 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking env_logger v0.8.3 [INFO] [stderr] Checking rand v0.8.3 [INFO] [stderr] Checking tempfile v3.2.0 [INFO] [stderr] Checking gag v0.1.10 [INFO] [stderr] Checking func_trace v1.0.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `syn` is imported redundantly [INFO] [stdout] --> src/args.rs:3:11 [INFO] [stdout] | [INFO] [stdout] 3 | use syn::{self, spanned::Spanned}; [INFO] [stdout] | ^^^^ the item `syn` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `syn` is imported redundantly [INFO] [stdout] --> src/args.rs:3:11 [INFO] [stdout] | [INFO] [stdout] 3 | use syn::{self, spanned::Spanned}; [INFO] [stdout] | ^^^^ the item `syn` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` 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] [stdout] warning: the item `syn` is imported redundantly [INFO] [stdout] --> src/args.rs:3:11 [INFO] [stdout] | [INFO] [stdout] 3 | use syn::{self, spanned::Spanned}; [INFO] [stdout] | ^^^^ the item `syn` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> examples/example_pretty.rs:10:12 [INFO] [stdout] | [INFO] [stdout] 10 | struct Foo(String); [INFO] [stdout] | --- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `Foo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 10 | struct Foo(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.95s [INFO] running `Command { std: "docker" "inspect" "a927771eeaea7dbcfab339c0b7f7950b41a12e4a0667e118bebf779784f7c72f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a927771eeaea7dbcfab339c0b7f7950b41a12e4a0667e118bebf779784f7c72f", kill_on_drop: false }` [INFO] [stdout] a927771eeaea7dbcfab339c0b7f7950b41a12e4a0667e118bebf779784f7c72f [INFO] checking func_trace-1.0.3 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate func_trace 1.0.3 into /workspace/builds/worker-3-tc2/source [INFO] validating manifest of crates.io crate func_trace 1.0.3 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-3-tc2/source/.cargo/config.toml [INFO] started tweaking crates.io crate func_trace 1.0.3 [INFO] finished tweaking crates.io crate func_trace 1.0.3 [INFO] tweaked toml for crates.io crate func_trace 1.0.3 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate crates.io crate func_trace 1.0.3 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5a01ec7445c2488b66f32d1b81826640911d816c07e527c2abfc8321c2f80e32 [INFO] running `Command { std: "docker" "start" "-a" "5a01ec7445c2488b66f32d1b81826640911d816c07e527c2abfc8321c2f80e32", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5a01ec7445c2488b66f32d1b81826640911d816c07e527c2abfc8321c2f80e32", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5a01ec7445c2488b66f32d1b81826640911d816c07e527c2abfc8321c2f80e32", kill_on_drop: false }` [INFO] [stdout] 5a01ec7445c2488b66f32d1b81826640911d816c07e527c2abfc8321c2f80e32 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] de7df32d9ca76f653749c6b3d8f891d1f0cd38005d94a806e5e0e3ac05584126 [INFO] running `Command { std: "docker" "start" "-a" "de7df32d9ca76f653749c6b3d8f891d1f0cd38005d94a806e5e0e3ac05584126", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.88 [INFO] [stderr] Compiling syn v1.0.64 [INFO] [stderr] Checking unicode-xid v0.2.1 [INFO] [stderr] Checking regex-syntax v0.6.23 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking getrandom v0.2.2 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking regex v1.4.5 [INFO] [stderr] Checking rand_core v0.6.2 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking rand v0.8.3 [INFO] [stderr] Checking env_logger v0.8.3 [INFO] [stderr] Checking tempfile v3.2.0 [INFO] [stderr] Checking gag v0.1.10 [INFO] [stderr] Checking func_trace v1.0.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `syn` is imported redundantly [INFO] [stdout] --> src/args.rs:3:11 [INFO] [stdout] | [INFO] [stdout] 3 | use syn::{self, spanned::Spanned}; [INFO] [stdout] | ^^^^ the item `syn` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `syn` is imported redundantly [INFO] [stdout] --> src/args.rs:3:11 [INFO] [stdout] | [INFO] [stdout] 3 | use syn::{self, spanned::Spanned}; [INFO] [stdout] | ^^^^ the item `syn` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` 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] [stdout] warning: the item `syn` is imported redundantly [INFO] [stdout] --> src/args.rs:3:11 [INFO] [stdout] | [INFO] [stdout] 3 | use syn::{self, spanned::Spanned}; [INFO] [stdout] | ^^^^ the item `syn` is already defined by prelude [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> examples/example_pretty.rs:10:12 [INFO] [stdout] | [INFO] [stdout] 10 | struct Foo(String); [INFO] [stdout] | --- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `Foo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 10 | struct Foo(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.66s [INFO] running `Command { std: "docker" "inspect" "de7df32d9ca76f653749c6b3d8f891d1f0cd38005d94a806e5e0e3ac05584126", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "de7df32d9ca76f653749c6b3d8f891d1f0cd38005d94a806e5e0e3ac05584126", kill_on_drop: false }` [INFO] [stdout] de7df32d9ca76f653749c6b3d8f891d1f0cd38005d94a806e5e0e3ac05584126