[INFO] cloning repository https://github.com/claudiomattera/png2wasm4src
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/claudiomattera/png2wasm4src" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclaudiomattera%2Fpng2wasm4src", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclaudiomattera%2Fpng2wasm4src'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5e0b27e953b706cd0b9e3f6a0401bc1005557903
[INFO] checking claudiomattera/png2wasm4src against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclaudiomattera%2Fpng2wasm4src" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/claudiomattera/png2wasm4src on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/claudiomattera/png2wasm4src
[INFO] finished tweaking git repo https://github.com/claudiomattera/png2wasm4src
[INFO] tweaked toml for git repo https://github.com/claudiomattera/png2wasm4src written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/claudiomattera/png2wasm4src 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9771ee8b48f042328ee84366b4e569a562016b5c210028d150fa25e230cdbaa3
[INFO] running `Command { std: "docker" "start" "-a" "9771ee8b48f042328ee84366b4e569a562016b5c210028d150fa25e230cdbaa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9771ee8b48f042328ee84366b4e569a562016b5c210028d150fa25e230cdbaa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9771ee8b48f042328ee84366b4e569a562016b5c210028d150fa25e230cdbaa3", kill_on_drop: false }`
[INFO] [stdout] 9771ee8b48f042328ee84366b4e569a562016b5c210028d150fa25e230cdbaa3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51bb0e874e61fa21be2c7a6a20fe227e537acfbea329e31bb8b92bacc97d950c
[INFO] running `Command { std: "docker" "start" "-a" "51bb0e874e61fa21be2c7a6a20fe227e537acfbea329e31bb8b92bacc97d950c", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]    Compiling anyhow v1.0.44
[INFO] [stderr]     Checking bytemuck v1.7.2
[INFO] [stderr]     Checking png v0.17.2
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking png2wasm4src v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Flags` is imported redundantly
[INFO] [stdout]    --> src/rust.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 137 |     use super::*;
[INFO] [stdout]     |         -------- the item `Flags` is already imported here
[INFO] [stdout] 138 |
[INFO] [stdout] 139 |     use crate::Flags;
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` 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 2.84s
[INFO] running `Command { std: "docker" "inspect" "51bb0e874e61fa21be2c7a6a20fe227e537acfbea329e31bb8b92bacc97d950c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51bb0e874e61fa21be2c7a6a20fe227e537acfbea329e31bb8b92bacc97d950c", kill_on_drop: false }`
[INFO] [stdout] 51bb0e874e61fa21be2c7a6a20fe227e537acfbea329e31bb8b92bacc97d950c
[INFO] checking claudiomattera/png2wasm4src against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclaudiomattera%2Fpng2wasm4src" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/claudiomattera/png2wasm4src on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/claudiomattera/png2wasm4src
[INFO] finished tweaking git repo https://github.com/claudiomattera/png2wasm4src
[INFO] tweaked toml for git repo https://github.com/claudiomattera/png2wasm4src written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/claudiomattera/png2wasm4src 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 759f357bc2f9d96e2a7f96c86f948298d980b79597eb517cc342e7e3b775ac7a
[INFO] running `Command { std: "docker" "start" "-a" "759f357bc2f9d96e2a7f96c86f948298d980b79597eb517cc342e7e3b775ac7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "759f357bc2f9d96e2a7f96c86f948298d980b79597eb517cc342e7e3b775ac7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "759f357bc2f9d96e2a7f96c86f948298d980b79597eb517cc342e7e3b775ac7a", kill_on_drop: false }`
[INFO] [stdout] 759f357bc2f9d96e2a7f96c86f948298d980b79597eb517cc342e7e3b775ac7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70b74f6f44b9e70e06a6bb66e97ed401008cb58a970a61f5ea7a26cacf9d73e6
[INFO] running `Command { std: "docker" "start" "-a" "70b74f6f44b9e70e06a6bb66e97ed401008cb58a970a61f5ea7a26cacf9d73e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking bytemuck v1.7.2
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking miniz_oxide v0.4.4
[INFO] [stderr]    Compiling anyhow v1.0.44
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/miniz_oxide-0.3.7/src/inflate/core.rs:1075:9
[INFO] [stdout]      |
[INFO] [stdout] 1075 | /         match state {
[INFO] [stdout] 1076 | |             Start => generate_state!(state, 'state_machine, {
[INFO] [stdout] 1077 | |                 l.bit_buf = 0;
[INFO] [stdout] 1078 | |                 l.num_bits = 0;
[INFO] [stdout] ...    |
[INFO] [stdout] 1607 | |             _ => break TINFLStatus::Failed,
[INFO] [stdout] 1608 | |         };
[INFO] [stdout]      | |_________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/miniz_oxide-0.4.4/src/inflate/core.rs:1060:9
[INFO] [stdout]      |
[INFO] [stdout] 1060 | /         match state {
[INFO] [stdout] 1061 | |             Start => generate_state!(state, 'state_machine, {
[INFO] [stdout] 1062 | |                 l.bit_buf = 0;
[INFO] [stdout] 1063 | |                 l.num_bits = 0;
[INFO] [stdout] ...    |
[INFO] [stdout] 1592 | |             _ => break TINFLStatus::Failed,
[INFO] [stdout] 1593 | |         };
[INFO] [stdout]      | |_________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `miniz_oxide` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `miniz_oxide` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "70b74f6f44b9e70e06a6bb66e97ed401008cb58a970a61f5ea7a26cacf9d73e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70b74f6f44b9e70e06a6bb66e97ed401008cb58a970a61f5ea7a26cacf9d73e6", kill_on_drop: false }`
[INFO] [stdout] 70b74f6f44b9e70e06a6bb66e97ed401008cb58a970a61f5ea7a26cacf9d73e6