[INFO] fetching crate fbspinner 0.1.0...
[INFO] checking fbspinner-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate fbspinner 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate fbspinner 0.1.0 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 fbspinner 0.1.0
[INFO] finished tweaking crates.io crate fbspinner 0.1.0
[INFO] tweaked toml for crates.io crate fbspinner 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 7d726df23f5466b08c309b02ec4ee31bdc49b094cd00dbd545e16c0c631c825b
[INFO] running `Command { std: "docker" "start" "-a" "7d726df23f5466b08c309b02ec4ee31bdc49b094cd00dbd545e16c0c631c825b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d726df23f5466b08c309b02ec4ee31bdc49b094cd00dbd545e16c0c631c825b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d726df23f5466b08c309b02ec4ee31bdc49b094cd00dbd545e16c0c631c825b", kill_on_drop: false }`
[INFO] [stdout] 7d726df23f5466b08c309b02ec4ee31bdc49b094cd00dbd545e16c0c631c825b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 0bd67bee1ab71c89b017a6d1dcb63b5f133b66211d863181b3c1b22bb84830b7
[INFO] running `Command { std: "docker" "start" "-a" "0bd67bee1ab71c89b017a6d1dcb63b5f133b66211d863181b3c1b22bb84830b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking fbspinner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/framebuffer.rs:132:32
[INFO] [stdout]     |
[INFO] [stdout] 132 |         write!(fmt, "{}", self.description())
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/framebuffer.rs:132:32
[INFO] [stdout]     |
[INFO] [stdout] 132 |         write!(fmt, "{}", self.description())
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/framebuffer.rs:138:66
[INFO] [stdout]     |
[INFO] [stdout] 138 |         FramebufferError::new(FramebufferErrorKind::IoError, err.description())
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/framebuffer.rs:138:66
[INFO] [stdout]     |
[INFO] [stdout] 138 |         FramebufferError::new(FramebufferErrorKind::IoError, err.description())
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `kind` is never read
[INFO] [stdout]    --> src/framebuffer.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub struct FramebufferError {
[INFO] [stdout]     |            ---------------- field in this struct
[INFO] [stdout] 111 |     pub kind: FramebufferErrorKind,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FramebufferError` 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `kind` is never read
[INFO] [stdout]    --> src/framebuffer.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub struct FramebufferError {
[INFO] [stdout]     |            ---------------- field in this struct
[INFO] [stdout] 111 |     pub kind: FramebufferErrorKind,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FramebufferError` 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `Command { std: "docker" "inspect" "0bd67bee1ab71c89b017a6d1dcb63b5f133b66211d863181b3c1b22bb84830b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bd67bee1ab71c89b017a6d1dcb63b5f133b66211d863181b3c1b22bb84830b7", kill_on_drop: false }`
[INFO] [stdout] 0bd67bee1ab71c89b017a6d1dcb63b5f133b66211d863181b3c1b22bb84830b7
[INFO] checking fbspinner-0.1.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate fbspinner 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate fbspinner 0.1.0 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 fbspinner 0.1.0
[INFO] finished tweaking crates.io crate fbspinner 0.1.0
[INFO] tweaked toml for crates.io crate fbspinner 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages
[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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 3f835650973722c16484c18a9cea14a29b877084c994e5128aef45fdc6db6b1c
[INFO] running `Command { std: "docker" "start" "-a" "3f835650973722c16484c18a9cea14a29b877084c994e5128aef45fdc6db6b1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f835650973722c16484c18a9cea14a29b877084c994e5128aef45fdc6db6b1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f835650973722c16484c18a9cea14a29b877084c994e5128aef45fdc6db6b1c", kill_on_drop: false }`
[INFO] [stdout] 3f835650973722c16484c18a9cea14a29b877084c994e5128aef45fdc6db6b1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 85692c27ee84e8dbafce1fac8ea1893598cf71390709dad10973f88606f6c6a3
[INFO] running `Command { std: "docker" "start" "-a" "85692c27ee84e8dbafce1fac8ea1893598cf71390709dad10973f88606f6c6a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking fbspinner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/framebuffer.rs:132:32
[INFO] [stdout]     |
[INFO] [stdout] 132 |         write!(fmt, "{}", self.description())
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/framebuffer.rs:132:32
[INFO] [stdout]     |
[INFO] [stdout] 132 |         write!(fmt, "{}", self.description())
[INFO] [stdout]     |                                ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/framebuffer.rs:138:66
[INFO] [stdout]     |
[INFO] [stdout] 138 |         FramebufferError::new(FramebufferErrorKind::IoError, err.description())
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/framebuffer.rs:138:66
[INFO] [stdout]     |
[INFO] [stdout] 138 |         FramebufferError::new(FramebufferErrorKind::IoError, err.description())
[INFO] [stdout]     |                                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `kind` is never read
[INFO] [stdout]    --> src/framebuffer.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub struct FramebufferError {
[INFO] [stdout]     |            ---------------- field in this struct
[INFO] [stdout] 111 |     pub kind: FramebufferErrorKind,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FramebufferError` 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `kind` is never read
[INFO] [stdout]    --> src/framebuffer.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub struct FramebufferError {
[INFO] [stdout]     |            ---------------- field in this struct
[INFO] [stdout] 111 |     pub kind: FramebufferErrorKind,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FramebufferError` 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.41s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "85692c27ee84e8dbafce1fac8ea1893598cf71390709dad10973f88606f6c6a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85692c27ee84e8dbafce1fac8ea1893598cf71390709dad10973f88606f6c6a3", kill_on_drop: false }`
[INFO] [stdout] 85692c27ee84e8dbafce1fac8ea1893598cf71390709dad10973f88606f6c6a3