[INFO] fetching crate citron 0.15.0...
[INFO] checking citron-0.15.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate citron 0.15.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate citron 0.15.0 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 citron 0.15.0
[INFO] finished tweaking crates.io crate citron 0.15.0
[INFO] tweaked toml for crates.io crate citron 0.15.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate citron 0.15.0 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 serde_derive v1.0.133
[INFO] [stderr]   Downloaded num_threads v0.1.4
[INFO] [stderr]   Downloaded time v0.3.9
[INFO] [stderr]   Downloaded indexmap v1.8.0
[INFO] [stderr]   Downloaded serde v1.0.133
[INFO] [stderr]   Downloaded os-release v0.1.0
[INFO] [stderr]   Downloaded if-addrs-sys v0.3.2
[INFO] [stderr]   Downloaded if-addrs v0.6.7
[INFO] [stderr]   Downloaded dirs-sys v0.3.6
[INFO] [stderr]   Downloaded sqlite3-sys v0.13.0
[INFO] [stderr]   Downloaded const-sha1 v0.2.0
[INFO] [stderr]   Downloaded neli v0.5.3
[INFO] [stderr]   Downloaded dbus v0.9.5
[INFO] [stderr]   Downloaded nix v0.24.1
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.24.0
[INFO] [stderr]   Downloaded x11rb v0.9.0
[INFO] [stderr]   Downloaded windows_i686_gnu v0.24.0
[INFO] [stderr]   Downloaded windows_i686_msvc v0.24.0
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.24.0
[INFO] [stderr]   Downloaded libc v0.2.124
[INFO] [stderr]   Downloaded libmacchina v6.1.1
[INFO] [stderr]   Downloaded file-locker v1.0.5
[INFO] [stderr]   Downloaded mac-notification-sys v0.5.0
[INFO] [stderr]   Downloaded nix v0.22.2
[INFO] [stderr]   Downloaded sqlite3-src v0.3.0
[INFO] [stderr]   Downloaded nix v0.17.0
[INFO] [stderr]   Downloaded wmi v0.9.3
[INFO] [stderr]   Downloaded windows_macros v0.18.0
[INFO] [stderr]   Downloaded windows v0.18.0
[INFO] [stderr]   Downloaded sqlite v0.26.0
[INFO] [stderr]   Downloaded memmap2 v0.5.3
[INFO] [stderr]   Downloaded linicon v2.3.0
[INFO] [stderr]   Downloaded redox_users v0.4.0
[INFO] [stderr]   Downloaded winrt-notification v0.5.1
[INFO] [stderr]   Downloaded notify-rust v4.5.8
[INFO] [stderr]   Downloaded sysctl v0.4.4
[INFO] [stderr]   Downloaded gethostname v0.2.2
[INFO] [stderr]   Downloaded freedesktop_entry_parser v1.3.0
[INFO] [stderr]   Downloaded pkg-config v0.3.24
[INFO] [stderr]   Downloaded libdbus-sys v0.2.2
[INFO] [stderr]   Downloaded memalloc v0.1.0
[INFO] [stderr]   Downloaded local-ip-address v0.4.4
[INFO] [stderr]   Downloaded strum_macros v0.22.0
[INFO] [stderr]   Downloaded strum v0.22.0
[INFO] [stderr]   Downloaded winapi-wsapoll v0.1.1
[INFO] [stderr]   Downloaded linked-hash-map v0.5.4
[INFO] [stderr]   Downloaded serde_yaml v0.8.23
[INFO] [stderr]   Downloaded windows_gen v0.18.0
[INFO] [stderr]   Downloaded windows v0.30.0
[INFO] [stderr]   Downloaded windows v0.24.0
[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] e5ee39e101e5b541aeb3906e8e632d068b85b350daac053a93a403574ea8f23f
[INFO] running `Command { std: "docker" "start" "-a" "e5ee39e101e5b541aeb3906e8e632d068b85b350daac053a93a403574ea8f23f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5ee39e101e5b541aeb3906e8e632d068b85b350daac053a93a403574ea8f23f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5ee39e101e5b541aeb3906e8e632d068b85b350daac053a93a403574ea8f23f", kill_on_drop: false }`
[INFO] [stdout] e5ee39e101e5b541aeb3906e8e632d068b85b350daac053a93a403574ea8f23f
[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] 9f57d1350e1e3e674fadf283493bff6f46d9856045afe21201cdfc6c19e20ca5
[INFO] running `Command { std: "docker" "start" "-a" "9f57d1350e1e3e674fadf283493bff6f46d9856045afe21201cdfc6c19e20ca5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling libmacchina v6.1.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking os-release v0.1.0
[INFO] [stderr]     Checking num_threads v0.1.4
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking home v0.5.3
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking bytesize v1.1.0
[INFO] [stderr]    Compiling libdbus-sys v0.2.2
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]    Compiling sqlite3-src v0.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking sqlite3-sys v0.13.0
[INFO] [stderr]     Checking dbus v0.9.5
[INFO] [stderr]     Checking if-addrs v0.6.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking memmap2 v0.5.3
[INFO] [stderr]     Checking time v0.3.9
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking sqlite v0.26.0
[INFO] [stderr]     Checking notify-rust v4.5.8
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking file-locker v1.0.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking freedesktop_entry_parser v1.3.0
[INFO] [stderr]     Checking sysctl v0.4.4
[INFO] [stderr]     Checking linicon v2.3.0
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking serde_yaml v0.8.23
[INFO] [stderr]     Checking citron v0.15.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]   --> src/icon.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Icon {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub path: PathBuf,
[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: field `path` is never read
[INFO] [stdout]   --> src/icon.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Icon {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub path: PathBuf,
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.58s
[INFO] running `Command { std: "docker" "inspect" "9f57d1350e1e3e674fadf283493bff6f46d9856045afe21201cdfc6c19e20ca5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f57d1350e1e3e674fadf283493bff6f46d9856045afe21201cdfc6c19e20ca5", kill_on_drop: false }`
[INFO] [stdout] 9f57d1350e1e3e674fadf283493bff6f46d9856045afe21201cdfc6c19e20ca5
[INFO] checking citron-0.15.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate citron 0.15.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate citron 0.15.0 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 citron 0.15.0
[INFO] finished tweaking crates.io crate citron 0.15.0
[INFO] tweaked toml for crates.io crate citron 0.15.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate citron 0.15.0 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] 71d8e51ff86ab29275214e953926dbf9ce6070e062140d83a95831bddbbc807e
[INFO] running `Command { std: "docker" "start" "-a" "71d8e51ff86ab29275214e953926dbf9ce6070e062140d83a95831bddbbc807e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71d8e51ff86ab29275214e953926dbf9ce6070e062140d83a95831bddbbc807e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71d8e51ff86ab29275214e953926dbf9ce6070e062140d83a95831bddbbc807e", kill_on_drop: false }`
[INFO] [stdout] 71d8e51ff86ab29275214e953926dbf9ce6070e062140d83a95831bddbbc807e
[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] a50123f9ed63c30b1199bde8d1d287a7ff0f7e69824dd53166d0c39ee26e105f
[INFO] running `Command { std: "docker" "start" "-a" "a50123f9ed63c30b1199bde8d1d287a7ff0f7e69824dd53166d0c39ee26e105f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling libmacchina v6.1.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking os-release v0.1.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking home v0.5.3
[INFO] [stderr]     Checking num_threads v0.1.4
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking bytesize v1.1.0
[INFO] [stderr]    Compiling libdbus-sys v0.2.2
[INFO] [stderr]    Compiling sqlite3-src v0.3.0
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking sqlite3-sys v0.13.0
[INFO] [stderr]     Checking if-addrs v0.6.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking dbus v0.9.5
[INFO] [stderr]     Checking memmap2 v0.5.3
[INFO] [stderr]     Checking time v0.3.9
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking sqlite v0.26.0
[INFO] [stderr]     Checking notify-rust v4.5.8
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking file-locker v1.0.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking sysctl v0.4.4
[INFO] [stderr]     Checking freedesktop_entry_parser v1.3.0
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking linicon v2.3.0
[INFO] [stderr]     Checking serde_yaml v0.8.23
[INFO] [stderr]     Checking citron v0.15.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `path` is never read
[INFO] [stdout]   --> src/icon.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Icon {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub path: PathBuf,
[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: field `path` is never read
[INFO] [stdout]   --> src/icon.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Icon {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub path: PathBuf,
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.25s
[INFO] running `Command { std: "docker" "inspect" "a50123f9ed63c30b1199bde8d1d287a7ff0f7e69824dd53166d0c39ee26e105f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a50123f9ed63c30b1199bde8d1d287a7ff0f7e69824dd53166d0c39ee26e105f", kill_on_drop: false }`
[INFO] [stdout] a50123f9ed63c30b1199bde8d1d287a7ff0f7e69824dd53166d0c39ee26e105f