[INFO] fetching crate devpng 0.1.2... [INFO] testing devpng-0.1.2 against 1.55.0 for beta-1.56-1 [INFO] extracting crate devpng 0.1.2 into /workspace/builds/worker-40/source [INFO] validating manifest of crates.io crate devpng 0.1.2 on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate devpng 0.1.2 [INFO] finished tweaking crates.io crate devpng 0.1.2 [INFO] tweaked toml for crates.io crate devpng 0.1.2 written to /workspace/builds/worker-40/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 705769f19c8ba25b1585e6d1c0760946cc9f52cbe82de98783cb8058a1e75b9b [INFO] running `Command { std: "docker" "start" "-a" "705769f19c8ba25b1585e6d1c0760946cc9f52cbe82de98783cb8058a1e75b9b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "705769f19c8ba25b1585e6d1c0760946cc9f52cbe82de98783cb8058a1e75b9b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "705769f19c8ba25b1585e6d1c0760946cc9f52cbe82de98783cb8058a1e75b9b", kill_on_drop: false }` [INFO] [stdout] 705769f19c8ba25b1585e6d1c0760946cc9f52cbe82de98783cb8058a1e75b9b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ad1c44e880900ce616d85255f096411b9589652ec88330d8774edbed25508ab5 [INFO] running `Command { std: "docker" "start" "-a" "ad1c44e880900ce616d85255f096411b9589652ec88330d8774edbed25508ab5", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling devker v0.1.6 [INFO] [stderr] Compiling devpng v0.1.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.05s [INFO] running `Command { std: "docker" "inspect" "ad1c44e880900ce616d85255f096411b9589652ec88330d8774edbed25508ab5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ad1c44e880900ce616d85255f096411b9589652ec88330d8774edbed25508ab5", kill_on_drop: false }` [INFO] [stdout] ad1c44e880900ce616d85255f096411b9589652ec88330d8774edbed25508ab5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c8fc85ceade20e3e2c99cb1d4676d16b4e74706cc55bf335eac02e6fefe84197 [INFO] running `Command { std: "docker" "start" "-a" "c8fc85ceade20e3e2c99cb1d4676d16b4e74706cc55bf335eac02e6fefe84197", kill_on_drop: false }` [INFO] [stderr] Compiling devpng v0.1.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.33s [INFO] running `Command { std: "docker" "inspect" "c8fc85ceade20e3e2c99cb1d4676d16b4e74706cc55bf335eac02e6fefe84197", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c8fc85ceade20e3e2c99cb1d4676d16b4e74706cc55bf335eac02e6fefe84197", kill_on_drop: false }` [INFO] [stdout] c8fc85ceade20e3e2c99cb1d4676d16b4e74706cc55bf335eac02e6fefe84197 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 8f88417f4b55f97964b20bf5ce379ce9396a74d456c028d60163f052ab2b6386 [INFO] running `Command { std: "docker" "start" "-a" "8f88417f4b55f97964b20bf5ce379ce9396a74d456c028d60163f052ab2b6386", kill_on_drop: false }` [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/devpng-c9f71e9a85e9629c) [INFO] [stdout] [INFO] [stderr] Doc-tests devpng [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 3 tests [INFO] [stdout] test src/lib.rs - (line 57) ... FAILED [INFO] [stdout] test src/lib.rs - (line 4) ... FAILED [INFO] [stdout] test src/lib.rs - (line 28) ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- src/lib.rs - (line 57) stdout ---- [INFO] [stdout] error[E0596]: cannot borrow `img` as mutable, as it is not declared as mutable [INFO] [stdout] --> src/lib.rs:71:14 [INFO] [stdout] | [INFO] [stdout] 13 | let img = cache.image(); [INFO] [stdout] | --- help: consider changing this to be mutable: `mut img` [INFO] [stdout] ... [INFO] [stdout] 16 | for x in img.iter_mut() { [INFO] [stdout] | ^^^ cannot borrow as mutable [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0596`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - (line 4) stdout ---- [INFO] [stdout] error[E0596]: cannot borrow `img` as mutable, as it is not declared as mutable [INFO] [stdout] --> src/lib.rs:17:14 [INFO] [stdout] | [INFO] [stdout] 12 | let img = png.image(); [INFO] [stdout] | --- help: consider changing this to be mutable: `mut img` [INFO] [stdout] ... [INFO] [stdout] 15 | for x in img.iter_mut() { [INFO] [stdout] | ^^^ cannot borrow as mutable [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0596`. [INFO] [stdout] Couldn't compile the test. [INFO] [stdout] ---- src/lib.rs - (line 28) stdout ---- [INFO] [stdout] Test executable failed (exit code 1). [INFO] [stdout] [INFO] [stdout] stderr: [INFO] [stdout] Error: "Read-only file system (os error 30)" [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] src/lib.rs - (line 28) [INFO] [stdout] src/lib.rs - (line 4) [INFO] [stdout] src/lib.rs - (line 57) [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.63s [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--doc' [INFO] running `Command { std: "docker" "inspect" "8f88417f4b55f97964b20bf5ce379ce9396a74d456c028d60163f052ab2b6386", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8f88417f4b55f97964b20bf5ce379ce9396a74d456c028d60163f052ab2b6386", kill_on_drop: false }` [INFO] [stdout] 8f88417f4b55f97964b20bf5ce379ce9396a74d456c028d60163f052ab2b6386