[INFO] cloning repository https://github.com/DeathEyeXD/pngme
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DeathEyeXD/pngme" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeathEyeXD%2Fpngme", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeathEyeXD%2Fpngme'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf5fc6f2b58d7b803d73fdba22961ebe0c982d47
[INFO] checking DeathEyeXD/pngme against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeathEyeXD%2Fpngme" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/DeathEyeXD/pngme
[INFO] finished tweaking git repo https://github.com/DeathEyeXD/pngme
[INFO] tweaked toml for git repo https://github.com/DeathEyeXD/pngme written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/DeathEyeXD/pngme on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/DeathEyeXD/pngme 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clap_derive v3.1.18
[INFO] [stderr]   Downloaded predicates v2.1.1
[INFO] [stderr]   Downloaded assert_cmd v2.0.4
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[INFO] [stderr]   Downloaded clap v3.1.18
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16e8416e27ceaf2854108b66d6f7cfa3c91cb1f1bae2b4206d2f681f719b56c8
[INFO] running `Command { std: "docker" "start" "-a" "16e8416e27ceaf2854108b66d6f7cfa3c91cb1f1bae2b4206d2f681f719b56c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16e8416e27ceaf2854108b66d6f7cfa3c91cb1f1bae2b4206d2f681f719b56c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16e8416e27ceaf2854108b66d6f7cfa3c91cb1f1bae2b4206d2f681f719b56c8", kill_on_drop: false }`
[INFO] [stdout] 16e8416e27ceaf2854108b66d6f7cfa3c91cb1f1bae2b4206d2f681f719b56c8
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a759ccbef4fabe845f06fb6ed193c09d30626c112d8ec7d18f9ce13bd533dcd
[INFO] running `Command { std: "docker" "start" "-a" "4a759ccbef4fabe845f06fb6ed193c09d30626c112d8ec7d18f9ce13bd533dcd", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]     Checking os_str_bytes v6.1.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking predicates-core v1.0.3
[INFO] [stderr]     Checking crc-catalog v1.1.1
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]     Checking termtree v0.2.4
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking crc v2.1.0
[INFO] [stderr]     Checking clap_lex v0.2.0
[INFO] [stderr]     Checking predicates-tree v1.0.5
[INFO] [stderr]     Checking predicates v2.1.1
[INFO] [stderr]     Checking assert_cmd v2.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.1.18
[INFO] [stderr]     Checking clap v3.1.18
[INFO] [stderr]     Checking pngme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias `TestResult` is never used
[INFO] [stdout]  --> tests/common/mod.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub type TestResult = pngme::Result<()>;
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VALID_CHUNK_TYPE` is never used
[INFO] [stdout]   --> tests/common/mod.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub const VALID_CHUNK_TYPE: &str = "ruSt";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VALID_DIFFERENT_CHUNK_TYPE` is never used
[INFO] [stdout]   --> tests/common/mod.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub const VALID_DIFFERENT_CHUNK_TYPE: &str = "tyPe";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `INVALID_CHUNK_TYPE` is never used
[INFO] [stdout]   --> tests/common/mod.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub const INVALID_CHUNK_TYPE: &str = "1234";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MESSAGE` is never used
[INFO] [stdout]   --> tests/common/mod.rs:15:11
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub const MESSAGE: &str = "top secret message";
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SECOND_MESSAGE` is never used
[INFO] [stdout]   --> tests/common/mod.rs:17:11
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub const SECOND_MESSAGE: &str = "second message";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DIFFERENT_MESSAGE` is never used
[INFO] [stdout]   --> tests/common/mod.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub const DIFFERENT_MESSAGE: &str = "message with different type";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VALID_ENCODED1` is never used
[INFO] [stdout]   --> tests/common/mod.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub const VALID_ENCODED1: &str = "tests/inputs/valid_encoded1.png";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VALID_ENCODED2` is never used
[INFO] [stdout]   --> tests/common/mod.rs:26:11
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub const VALID_ENCODED2: &str = "tests/inputs/valid_encoded2.png";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VALID_ENCODED2_DIFFERENT` is never used
[INFO] [stdout]   --> tests/common/mod.rs:27:11
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub const VALID_ENCODED2_DIFFERENT: &str = "tests/inputs/valid_encoded2_different.png";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_not_existing_file` is never used
[INFO] [stdout]   --> tests/common/mod.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn gen_not_existing_file() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_command` is never used
[INFO] [stdout]   --> tests/common/mod.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn encode_command() -> Command {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_command` is never used
[INFO] [stdout]   --> tests/common/mod.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub fn decode_command() -> Command {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_command` is never used
[INFO] [stdout]   --> tests/common/mod.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn remove_command() -> Command {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `INVALID_CHUNK_TYPE` is never used
[INFO] [stdout]   --> tests/common/mod.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub const INVALID_CHUNK_TYPE: &str = "1234";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SECOND_MESSAGE` is never used
[INFO] [stdout]   --> tests/common/mod.rs:17:11
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub const SECOND_MESSAGE: &str = "second message";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_not_existing_file` is never used
[INFO] [stdout]   --> tests/common/mod.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn gen_not_existing_file() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_command` is never used
[INFO] [stdout]   --> tests/common/mod.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn encode_command() -> Command {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_command` is never used
[INFO] [stdout]   --> tests/common/mod.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub fn decode_command() -> Command {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `TestResult` is never used
[INFO] [stdout]  --> tests/common/mod.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub type TestResult = pngme::Result<()>;
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VALID_DIFFERENT_CHUNK_TYPE` is never used
[INFO] [stdout]   --> tests/common/mod.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub const VALID_DIFFERENT_CHUNK_TYPE: &str = "tyPe";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SECOND_MESSAGE` is never used
[INFO] [stdout]   --> tests/common/mod.rs:17:11
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub const SECOND_MESSAGE: &str = "second message";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DIFFERENT_MESSAGE` is never used
[INFO] [stdout]   --> tests/common/mod.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub const DIFFERENT_MESSAGE: &str = "message with different type";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VALID_ENCODED1` is never used
[INFO] [stdout]   --> tests/common/mod.rs:25:11
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub const VALID_ENCODED1: &str = "tests/inputs/valid_encoded1.png";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VALID_ENCODED2` is never used
[INFO] [stdout]   --> tests/common/mod.rs:26:11
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub const VALID_ENCODED2: &str = "tests/inputs/valid_encoded2.png";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VALID_ENCODED2_DIFFERENT` is never used
[INFO] [stdout]   --> tests/common/mod.rs:27:11
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub const VALID_ENCODED2_DIFFERENT: &str = "tests/inputs/valid_encoded2_different.png";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_command` is never used
[INFO] [stdout]   --> tests/common/mod.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | pub fn decode_command() -> Command {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_command` is never used
[INFO] [stdout]   --> tests/common/mod.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn remove_command() -> Command {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assert_no_message` is never used
[INFO] [stdout]   --> tests/decode.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn assert_no_message(filename: &str, chunk_type: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `TestResult` is never used
[INFO] [stdout]  --> tests/common/mod.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub type TestResult = pngme::Result<()>;
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `INVALID_CHUNK_TYPE` is never used
[INFO] [stdout]   --> tests/common/mod.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub const INVALID_CHUNK_TYPE: &str = "1234";
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gen_not_existing_file` is never used
[INFO] [stdout]   --> tests/common/mod.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn gen_not_existing_file() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_command` is never used
[INFO] [stdout]   --> tests/common/mod.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn encode_command() -> Command {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_command` is never used
[INFO] [stdout]   --> tests/common/mod.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn remove_command() -> Command {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.59s
[INFO] running `Command { std: "docker" "inspect" "4a759ccbef4fabe845f06fb6ed193c09d30626c112d8ec7d18f9ce13bd533dcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a759ccbef4fabe845f06fb6ed193c09d30626c112d8ec7d18f9ce13bd533dcd", kill_on_drop: false }`
[INFO] [stdout] 4a759ccbef4fabe845f06fb6ed193c09d30626c112d8ec7d18f9ce13bd533dcd