[INFO] cloning repository https://github.com/laodino/pngladino
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/laodino/pngladino" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaodino%2Fpngladino", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaodino%2Fpngladino'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7bc7317948318fcb2029faff4dfbf6381db484b3
[INFO] checking laodino/pngladino against try#2c4819a380dbddb1f2a0f4405a49fb6ed90983ae for pr-152996
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaodino%2Fpngladino" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/laodino/pngladino
[INFO] finished tweaking git repo https://github.com/laodino/pngladino
[INFO] tweaked toml for git repo https://github.com/laodino/pngladino written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/laodino/pngladino on toolchain 2c4819a380dbddb1f2a0f4405a49fb6ed90983ae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/laodino/pngladino 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" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking laodino/pngladino against try#2c4819a380dbddb1f2a0f4405a49fb6ed90983ae for pr-152996
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flaodino%2Fpngladino" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/laodino/pngladino
[INFO] finished tweaking git repo https://github.com/laodino/pngladino
[INFO] tweaked toml for git repo https://github.com/laodino/pngladino written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/laodino/pngladino on toolchain 2c4819a380dbddb1f2a0f4405a49fb6ed90983ae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/laodino/pngladino 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" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3ace776f39b408d89c673f4b010cdd32d58635ed2bb52b680bf6dac6be2ea6f
[INFO] running `Command { std: "docker" "start" "-a" "e3ace776f39b408d89c673f4b010cdd32d58635ed2bb52b680bf6dac6be2ea6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3ace776f39b408d89c673f4b010cdd32d58635ed2bb52b680bf6dac6be2ea6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3ace776f39b408d89c673f4b010cdd32d58635ed2bb52b680bf6dac6be2ea6f", kill_on_drop: false }`
[INFO] [stdout] e3ace776f39b408d89c673f4b010cdd32d58635ed2bb52b680bf6dac6be2ea6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8462c46b915c26aa79e36aa5193e62058749e82f873e711b6bdca445c86b9b4d
[INFO] running `Command { std: "docker" "start" "-a" "8462c46b915c26aa79e36aa5193e62058749e82f873e711b6bdca445c86b9b4d", kill_on_drop: false }`
[INFO] [stderr]     Checking pngladino v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `ChunkType` is never constructed
[INFO] [stdout]   --> src/chunk_type.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct  ChunkType{
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `isbitzero` is never used
[INFO] [stdout]   --> src/chunk_type.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn isbitzero(n:u8,p:u8)->bool{
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]   --> src/chunk_type.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl ChunkType{
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 26 |
[INFO] [stdout] 27 |     fn bytes(&self)->[u8;4]{
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn is_valid(&self)->bool{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn is_valid_to_convert(&self)->bool{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn is_critical(&self)->bool{
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     fn is_public(&self)->bool{
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     fn is_reserved_bit_valid(&self)->bool{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     fn is_safe_to_copy(&self)->bool{
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Ancillary` should have a snake case name
[INFO] [stdout]   --> src/chunk_type.rs:13:2
[INFO] [stdout]    |
[INFO] [stdout] 13 |  Ancillary :u8,
[INFO] [stdout]    |  ^^^^^^^^^ help: convert the identifier to snake case: `ancillary`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Private` should have a snake case name
[INFO] [stdout]   --> src/chunk_type.rs:14:2
[INFO] [stdout]    |
[INFO] [stdout] 14 |  Private :u8,
[INFO] [stdout]    |  ^^^^^^^ help: convert the identifier to snake case: `private`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Reserved` should have a snake case name
[INFO] [stdout]   --> src/chunk_type.rs:15:2
[INFO] [stdout]    |
[INFO] [stdout] 15 |  Reserved :u8,
[INFO] [stdout]    |  ^^^^^^^^ help: convert the identifier to snake case: `reserved`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Safetocopy` should have a snake case name
[INFO] [stdout]   --> src/chunk_type.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 16 |  Safetocopy:u8,
[INFO] [stdout]    |  ^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `safetocopy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Ancillary` should have a snake case name
[INFO] [stdout]   --> src/chunk_type.rs:13:2
[INFO] [stdout]    |
[INFO] [stdout] 13 |  Ancillary :u8,
[INFO] [stdout]    |  ^^^^^^^^^ help: convert the identifier to snake case: `ancillary`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Private` should have a snake case name
[INFO] [stdout]   --> src/chunk_type.rs:14:2
[INFO] [stdout]    |
[INFO] [stdout] 14 |  Private :u8,
[INFO] [stdout]    |  ^^^^^^^ help: convert the identifier to snake case: `private`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Reserved` should have a snake case name
[INFO] [stdout]   --> src/chunk_type.rs:15:2
[INFO] [stdout]    |
[INFO] [stdout] 15 |  Reserved :u8,
[INFO] [stdout]    |  ^^^^^^^^ help: convert the identifier to snake case: `reserved`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Safetocopy` should have a snake case name
[INFO] [stdout]   --> src/chunk_type.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 16 |  Safetocopy:u8,
[INFO] [stdout]    |  ^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `safetocopy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "8462c46b915c26aa79e36aa5193e62058749e82f873e711b6bdca445c86b9b4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8462c46b915c26aa79e36aa5193e62058749e82f873e711b6bdca445c86b9b4d", kill_on_drop: false }`
[INFO] [stdout] 8462c46b915c26aa79e36aa5193e62058749e82f873e711b6bdca445c86b9b4d