[INFO] fetching crate wmctl 0.0.45...
[INFO] checking wmctl-0.0.45 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate wmctl 0.0.45 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate wmctl 0.0.45 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 wmctl 0.0.45
[INFO] finished tweaking crates.io crate wmctl 0.0.45
[INFO] tweaked toml for crates.io crate wmctl 0.0.45 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate wmctl 0.0.45 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 gethostname v0.2.1
[INFO] [stderr]   Downloaded gory v0.1.14
[INFO] [stderr]   Downloaded witcher v0.1.19
[INFO] [stderr]   Downloaded libwmctl v0.0.45
[INFO] [stderr]   Downloaded nix v0.22.2
[INFO] [stderr]   Downloaded tracing-subscriber v0.3.3
[INFO] [stderr]   Downloaded x11rb v0.9.0
[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] e765fbd3f494800a5f41955a0640b3114c383a1c4e8d030bdfbf55038bf2ca64
[INFO] running `Command { std: "docker" "start" "-a" "e765fbd3f494800a5f41955a0640b3114c383a1c4e8d030bdfbf55038bf2ca64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e765fbd3f494800a5f41955a0640b3114c383a1c4e8d030bdfbf55038bf2ca64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e765fbd3f494800a5f41955a0640b3114c383a1c4e8d030bdfbf55038bf2ca64", kill_on_drop: false }`
[INFO] [stdout] e765fbd3f494800a5f41955a0640b3114c383a1c4e8d030bdfbf55038bf2ca64
[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] afad1ff34d872c2a3d21247cf6b26cc460f9090cfb7c405fe04bd71f5ffcb182
[INFO] running `Command { std: "docker" "start" "-a" "afad1ff34d872c2a3d21247cf6b26cc460f9090cfb7c405fe04bd71f5ffcb182", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]     Checking tracing-subscriber v0.3.3
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]     Checking nix v0.22.2
[INFO] [stderr]     Checking gethostname v0.2.1
[INFO] [stderr]     Checking gory v0.1.14
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]    Compiling wmctl v0.0.45 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking witcher v0.1.19
[INFO] [stderr]     Checking x11rb v0.9.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.18
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]     Checking libwmctl v0.0.45
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tracing_subscriber` is imported redundantly
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use tracing_subscriber;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ the item `tracing_subscriber` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tracing_subscriber` is imported redundantly
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use tracing_subscriber;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ the item `tracing_subscriber` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.63s
[INFO] running `Command { std: "docker" "inspect" "afad1ff34d872c2a3d21247cf6b26cc460f9090cfb7c405fe04bd71f5ffcb182", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afad1ff34d872c2a3d21247cf6b26cc460f9090cfb7c405fe04bd71f5ffcb182", kill_on_drop: false }`
[INFO] [stdout] afad1ff34d872c2a3d21247cf6b26cc460f9090cfb7c405fe04bd71f5ffcb182
[INFO] checking wmctl-0.0.45 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate wmctl 0.0.45 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate wmctl 0.0.45 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 wmctl 0.0.45
[INFO] finished tweaking crates.io crate wmctl 0.0.45
[INFO] tweaked toml for crates.io crate wmctl 0.0.45 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate wmctl 0.0.45 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] 8a1f4bb7bd014c751acc79ff0b9414c85c611add30f05aa4281af1ed6a15a36f
[INFO] running `Command { std: "docker" "start" "-a" "8a1f4bb7bd014c751acc79ff0b9414c85c611add30f05aa4281af1ed6a15a36f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a1f4bb7bd014c751acc79ff0b9414c85c611add30f05aa4281af1ed6a15a36f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a1f4bb7bd014c751acc79ff0b9414c85c611add30f05aa4281af1ed6a15a36f", kill_on_drop: false }`
[INFO] [stdout] 8a1f4bb7bd014c751acc79ff0b9414c85c611add30f05aa4281af1ed6a15a36f
[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] a7e67edebb6f043a84b40c30d21ab40b700c7a133dc070faca8b5f32206e8096
[INFO] running `Command { std: "docker" "start" "-a" "a7e67edebb6f043a84b40c30d21ab40b700c7a133dc070faca8b5f32206e8096", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking tracing-subscriber v0.3.3
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]     Checking nix v0.22.2
[INFO] [stderr]     Checking gethostname v0.2.1
[INFO] [stderr]     Checking gory v0.1.14
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]    Compiling wmctl v0.0.45 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking witcher v0.1.19
[INFO] [stderr]     Checking x11rb v0.9.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.18
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]     Checking libwmctl v0.0.45
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tracing_subscriber` is imported redundantly
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use tracing_subscriber;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ the item `tracing_subscriber` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]   --> src/main.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | use std::convert::TryFrom;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryFrom` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `tracing_subscriber` is imported redundantly
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | use tracing_subscriber;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^ the item `tracing_subscriber` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.17s
[INFO] running `Command { std: "docker" "inspect" "a7e67edebb6f043a84b40c30d21ab40b700c7a133dc070faca8b5f32206e8096", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7e67edebb6f043a84b40c30d21ab40b700c7a133dc070faca8b5f32206e8096", kill_on_drop: false }`
[INFO] [stdout] a7e67edebb6f043a84b40c30d21ab40b700c7a133dc070faca8b5f32206e8096