[INFO] fetching crate puff 0.1.7... [INFO] checking puff-0.1.7 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate puff 0.1.7 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate puff 0.1.7 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] started tweaking crates.io crate puff 0.1.7 [INFO] finished tweaking crates.io crate puff 0.1.7 [INFO] tweaked toml for crates.io crate puff 0.1.7 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate crates.io crate puff 0.1.7 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] Downloading crates ... [INFO] [stderr] Downloaded dirs-sys v0.3.6 [INFO] [stderr] Downloaded quote v1.0.14 [INFO] [stderr] Downloaded serde_derive v1.0.133 [INFO] [stderr] Downloaded structopt v0.3.25 [INFO] [stderr] Downloaded serde v1.0.133 [INFO] [stderr] Downloaded serde_json v1.0.74 [INFO] [stderr] Downloaded syn v1.0.85 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] dbf27946a4df2ca5aa4c83273d1f2931085171a2bccfd914c8e7d75250cda99a [INFO] running `Command { std: "docker" "start" "-a" "dbf27946a4df2ca5aa4c83273d1f2931085171a2bccfd914c8e7d75250cda99a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "dbf27946a4df2ca5aa4c83273d1f2931085171a2bccfd914c8e7d75250cda99a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dbf27946a4df2ca5aa4c83273d1f2931085171a2bccfd914c8e7d75250cda99a", kill_on_drop: false }` [INFO] [stdout] dbf27946a4df2ca5aa4c83273d1f2931085171a2bccfd914c8e7d75250cda99a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 716dc77405c3868630d17e0cbe0c23327fe3516328233ba9c02060e8f436e231 [INFO] running `Command { std: "docker" "start" "-a" "716dc77405c3868630d17e0cbe0c23327fe3516328233ba9c02060e8f436e231", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.36 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling libc v0.2.112 [INFO] [stderr] Compiling syn v1.0.85 [INFO] [stderr] Compiling serde_derive v1.0.133 [INFO] [stderr] Compiling serde v1.0.133 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Checking unicode-width v0.1.9 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking ansi_term v0.12.1 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling serde_json v1.0.74 [INFO] [stderr] Checking fastrand v1.6.0 [INFO] [stderr] Checking ryu v1.0.9 [INFO] [stderr] Checking itoa v1.0.1 [INFO] [stderr] Checking remove_dir_all v0.5.3 [INFO] [stderr] Checking symlink v0.1.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking dirs-sys v0.3.6 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking tempfile v3.3.0 [INFO] [stderr] Checking directories v4.0.1 [INFO] [stderr] Compiling quote v1.0.14 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Compiling structopt-derive v0.4.18 [INFO] [stderr] Checking structopt v0.3.25 [INFO] [stderr] Checking uuid v0.8.2 [INFO] [stderr] Checking puff v0.1.7 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:4:21 [INFO] [stdout] | [INFO] [stdout] 4 | pub struct AppError(pub(crate) String); [INFO] [stdout] | -------- ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `AppError` 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] 4 | pub struct AppError(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:4:21 [INFO] [stdout] | [INFO] [stdout] 4 | pub struct AppError(pub(crate) String); [INFO] [stdout] | -------- ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `AppError` 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] 4 | pub struct AppError(()); [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 21.67s [INFO] running `Command { std: "docker" "inspect" "716dc77405c3868630d17e0cbe0c23327fe3516328233ba9c02060e8f436e231", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "716dc77405c3868630d17e0cbe0c23327fe3516328233ba9c02060e8f436e231", kill_on_drop: false }` [INFO] [stdout] 716dc77405c3868630d17e0cbe0c23327fe3516328233ba9c02060e8f436e231 [INFO] checking puff-0.1.7 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate puff 0.1.7 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate puff 0.1.7 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] started tweaking crates.io crate puff 0.1.7 [INFO] finished tweaking crates.io crate puff 0.1.7 [INFO] tweaked toml for crates.io crate puff 0.1.7 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] crate crates.io crate puff 0.1.7 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] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ebfe5dc63533a0249b5d7f64d28039f07727f490c596611118042fba02a24b75 [INFO] running `Command { std: "docker" "start" "-a" "ebfe5dc63533a0249b5d7f64d28039f07727f490c596611118042fba02a24b75", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ebfe5dc63533a0249b5d7f64d28039f07727f490c596611118042fba02a24b75", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ebfe5dc63533a0249b5d7f64d28039f07727f490c596611118042fba02a24b75", kill_on_drop: false }` [INFO] [stdout] ebfe5dc63533a0249b5d7f64d28039f07727f490c596611118042fba02a24b75 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] c44f159c83b15ecd6c09ff9a07d016ca890dbc9260ec5305de901bb919ae20e7 [INFO] running `Command { std: "docker" "start" "-a" "c44f159c83b15ecd6c09ff9a07d016ca890dbc9260ec5305de901bb919ae20e7", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.36 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling libc v0.2.112 [INFO] [stderr] Compiling syn v1.0.85 [INFO] [stderr] Compiling serde_derive v1.0.133 [INFO] [stderr] Compiling serde v1.0.133 [INFO] [stderr] Compiling unicode-segmentation v1.8.0 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Checking unicode-width v0.1.9 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking vec_map v0.8.2 [INFO] [stderr] Checking strsim v0.8.0 [INFO] [stderr] Checking ansi_term v0.12.1 [INFO] [stderr] Compiling heck v0.3.3 [INFO] [stderr] Compiling serde_json v1.0.74 [INFO] [stderr] Checking ryu v1.0.9 [INFO] [stderr] Checking fastrand v1.6.0 [INFO] [stderr] Checking itoa v1.0.1 [INFO] [stderr] Checking remove_dir_all v0.5.3 [INFO] [stderr] Checking symlink v0.1.0 [INFO] [stderr] Compiling quote v1.0.14 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking dirs-sys v0.3.6 [INFO] [stderr] Checking tempfile v3.3.0 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking directories v4.0.1 [INFO] [stderr] Compiling structopt-derive v0.4.18 [INFO] [stderr] Checking structopt v0.3.25 [INFO] [stderr] Checking uuid v0.8.2 [INFO] [stderr] Checking puff v0.1.7 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:4:21 [INFO] [stdout] | [INFO] [stdout] 4 | pub struct AppError(pub(crate) String); [INFO] [stdout] | -------- ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `AppError` 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] 4 | pub struct AppError(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/error.rs:4:21 [INFO] [stdout] | [INFO] [stdout] 4 | pub struct AppError(pub(crate) String); [INFO] [stdout] | -------- ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `AppError` 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] 4 | pub struct AppError(()); [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 23.27s [INFO] running `Command { std: "docker" "inspect" "c44f159c83b15ecd6c09ff9a07d016ca890dbc9260ec5305de901bb919ae20e7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c44f159c83b15ecd6c09ff9a07d016ca890dbc9260ec5305de901bb919ae20e7", kill_on_drop: false }` [INFO] [stdout] c44f159c83b15ecd6c09ff9a07d016ca890dbc9260ec5305de901bb919ae20e7