[INFO] fetching crate lenna_core 0.2.0...
[INFO] checking lenna_core-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate lenna_core 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate lenna_core 0.2.0 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 lenna_core 0.2.0
[INFO] finished tweaking crates.io crate lenna_core 0.2.0
[INFO] tweaked toml for crates.io crate lenna_core 0.2.0 written to /workspace/builds/worker-1-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 }`
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[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 143 packages
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[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 }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] be3b8944cc39058560ddc242a53cc2ad4a5531c968cb74dd8ca31d0796e2a9b6
[INFO] running `Command { std: "docker" "start" "-a" "be3b8944cc39058560ddc242a53cc2ad4a5531c968cb74dd8ca31d0796e2a9b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be3b8944cc39058560ddc242a53cc2ad4a5531c968cb74dd8ca31d0796e2a9b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be3b8944cc39058560ddc242a53cc2ad4a5531c968cb74dd8ca31d0796e2a9b6", kill_on_drop: false }`
[INFO] [stdout] be3b8944cc39058560ddc242a53cc2ad4a5531c968cb74dd8ca31d0796e2a9b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 333a5ad35de1ff578999ee8a1e8bde6baf1b9df920dd98dba8bce72996bcce94
[INFO] running `Command { std: "docker" "start" "-a" "333a5ad35de1ff578999ee8a1e8bde6baf1b9df920dd98dba8bce72996bcce94", kill_on_drop: false }`
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[INFO] [stderr]    Compiling rustix v0.38.32
[INFO] [stderr]    Compiling unicode-width v0.1.11
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cbindgen v0.19.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]    Compiling fastrand v2.0.2
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.92
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking num-rational v0.3.2
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking mutate_once v0.1.1
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking bytes v0.5.6
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[INFO] [stderr]     Checking csv v1.3.0
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[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.42
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking dyn-clone v1.0.17
[INFO] [stderr]     Checking img-parts v0.2.3
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.92
[INFO] [stderr]    Compiling tempfile v3.10.1
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.92
[INFO] [stderr]     Checking wasm-bindgen v0.2.92
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[INFO] [stderr]     Checking js-sys v0.3.69
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling serde_json v1.0.115
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.42
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.42
[INFO] [stderr]    Compiling lenna_core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `image` is imported redundantly
[INFO] [stdout]  --> src/io/write.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use image;
[INFO] [stdout]   |     ^^^^^ the item `image` 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 `Field` is imported redundantly
[INFO] [stdout]   --> src/io/write.rs:90:16
[INFO] [stdout]    |
[INFO] [stdout] 88 |     use super::*;
[INFO] [stdout]    |         -------- the item `Field` is already imported here
[INFO] [stdout] 89 |     use crate::io::read::read_from_file;
[INFO] [stdout] 90 |     use exif::{Field, In, Tag, Value};
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Tag` is imported redundantly
[INFO] [stdout]   --> src/io/write.rs:90:27
[INFO] [stdout]    |
[INFO] [stdout] 88 |     use super::*;
[INFO] [stdout]    |         -------- the item `Tag` is already imported here
[INFO] [stdout] 89 |     use crate::io::read::read_from_file;
[INFO] [stdout] 90 |     use exif::{Field, In, Tag, Value};
[INFO] [stdout]    |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_yaml` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     use serde_yaml;
[INFO] [stdout]    |         ^^^^^^^^^^ the item `serde_yaml` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `dyn PluginRegistrar`, which is not FFI-safe
[INFO] [stdout]  --> src/plugins/mod.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub register: unsafe extern "C" fn(&mut dyn PluginRegistrar),
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = note: trait objects have no C equivalent
[INFO] [stdout]   = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` fn uses type `dyn PluginRegistrar`, which is not FFI-safe
[INFO] [stdout]  --> src/plugins/mod.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub register: unsafe extern "C" fn(&mut dyn PluginRegistrar),
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
[INFO] [stdout]   |
[INFO] [stdout]   = note: trait objects have no C equivalent
[INFO] [stdout]   = note: `#[warn(improper_ctypes_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.87s
[INFO] running `Command { std: "docker" "inspect" "333a5ad35de1ff578999ee8a1e8bde6baf1b9df920dd98dba8bce72996bcce94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "333a5ad35de1ff578999ee8a1e8bde6baf1b9df920dd98dba8bce72996bcce94", kill_on_drop: false }`
[INFO] [stdout] 333a5ad35de1ff578999ee8a1e8bde6baf1b9df920dd98dba8bce72996bcce94