[INFO] cloning repository https://github.com/dhruvja/png-message
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dhruvja/png-message" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdhruvja%2Fpng-message", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdhruvja%2Fpng-message'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6008babf79f663fa456a49f38cad467fd9595db2
[INFO] testing dhruvja/png-message against master#b03b3a7ec92682be2917540b679478d41c95a30c for pr-137122-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdhruvja%2Fpng-message" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dhruvja/png-message
[INFO] finished tweaking git repo https://github.com/dhruvja/png-message
[INFO] tweaked toml for git repo https://github.com/dhruvja/png-message written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dhruvja/png-message on toolchain b03b3a7ec92682be2917540b679478d41c95a30c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b03b3a7ec92682be2917540b679478d41c95a30c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dhruvja/png-message 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" "+b03b3a7ec92682be2917540b679478d41c95a30c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+b03b3a7ec92682be2917540b679478d41c95a30c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19d85231cd17972485e2a022aa6561460c31ad53b2bdbf0b0b224cc05d1668ce
[INFO] running `Command { std: "docker" "start" "-a" "19d85231cd17972485e2a022aa6561460c31ad53b2bdbf0b0b224cc05d1668ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19d85231cd17972485e2a022aa6561460c31ad53b2bdbf0b0b224cc05d1668ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19d85231cd17972485e2a022aa6561460c31ad53b2bdbf0b0b224cc05d1668ce", kill_on_drop: false }`
[INFO] [stdout] 19d85231cd17972485e2a022aa6561460c31ad53b2bdbf0b0b224cc05d1668ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+b03b3a7ec92682be2917540b679478d41c95a30c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08a861f6f421b7d15e2b02dea1bf46b6b2fcee2b28645b1914cfaa63dbe838c9
[INFO] running `Command { std: "docker" "start" "-a" "08a861f6f421b7d15e2b02dea1bf46b6b2fcee2b28645b1914cfaa63dbe838c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc-catalog v2.1.0
[INFO] [stderr]    Compiling crc v3.0.0
[INFO] [stderr]    Compiling png-message v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `crc`
[INFO] [stdout]   --> src/png.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |             let crc = &chunk[crc_start_index..];
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_crc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Chunk` is never constructed
[INFO] [stdout]  --> src/chunk.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Chunk {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `as_u32_be` is never used
[INFO] [stdout]   --> src/chunk.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn as_u32_be(array: &[u8]) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_crc` is never used
[INFO] [stdout]   --> src/chunk.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn get_crc(chunk_type: &[u8; 4], data: &[u8]) -> u32 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/chunk.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl Chunk {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 28 |     pub fn new(chunk_type: ChunkType, data: Vec<u8>) -> Chunk {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn length(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     pub fn chunk_type(&self) -> ChunkType {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn data(&self) -> &[u8] {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn crc(&self) -> u32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     pub fn data_as_string(&self) -> Result<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn as_bytes(&self) -> Vec<u8> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ChunkType` is never constructed
[INFO] [stdout]  --> src/chunk_type.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct ChunkType {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `bytes`, `is_valid`, `is_critical`, `is_public`, `is_reserved_bit_valid`, and `is_safe_to_copy` are never used
[INFO] [stdout]   --> src/chunk_type.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl ChunkType {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 10 |     pub fn bytes(&self) -> [u8;4] {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub fn is_valid(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn is_critical(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn is_public(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     pub fn is_reserved_bit_valid(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     pub fn is_safe_to_copy(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Png` is never constructed
[INFO] [stdout]  --> src/png.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Png {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/png.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Png {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 12 |     pub const STANDARD_HEADER: &[u8] = &[137, 80, 78, 71, 13, 10, 26, 10];
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^
[INFO] [stdout] 13 |
[INFO] [stdout] 14 |     fn from_chunks(chunks: Vec<Chunk>) -> Png {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn append_chunk(&mut self, chunk: Chunk) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn remove_chunk(&mut self, chunk_type: &str) -> Result<Chunk> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn header(&self) -> &[u8; 10] {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn chunks(&self) -> &[Chunk] {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn chunk_by_type(&self, chunk_type: &str) -> Option<&Chunk> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `T` should have a snake case name
[INFO] [stdout]   --> src/png.rs:27:18
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Some(T) => Ok(self.chunks.remove(T)),
[INFO] [stdout]    |                  ^ help: convert the identifier to snake case: `t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "08a861f6f421b7d15e2b02dea1bf46b6b2fcee2b28645b1914cfaa63dbe838c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08a861f6f421b7d15e2b02dea1bf46b6b2fcee2b28645b1914cfaa63dbe838c9", kill_on_drop: false }`
[INFO] [stdout] 08a861f6f421b7d15e2b02dea1bf46b6b2fcee2b28645b1914cfaa63dbe838c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+b03b3a7ec92682be2917540b679478d41c95a30c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53b5a5279776ecdc95af01da13e2b56288cc6b108806ec5cf5020c6f32f8d6e3
[INFO] running `Command { std: "docker" "start" "-a" "53b5a5279776ecdc95af01da13e2b56288cc6b108806ec5cf5020c6f32f8d6e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling png-message v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]   --> src/png.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 93 |     use std::str::FromStr;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `crc`
[INFO] [stdout]   --> src/png.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |             let crc = &chunk[crc_start_index..];
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_crc`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `data` is never used
[INFO] [stdout]   --> src/chunk.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl Chunk {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn data(&self) -> &[u8] {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `header` is never used
[INFO] [stdout]   --> src/png.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Png {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn header(&self) -> &[u8; 10] {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `T` should have a snake case name
[INFO] [stdout]   --> src/png.rs:27:18
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Some(T) => Ok(self.chunks.remove(T)),
[INFO] [stdout]    |                  ^ help: convert the identifier to snake case: `t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `Png_FILE` should have an upper case name
[INFO] [stdout]    --> src/png.rs:251:11
[INFO] [stdout]     |
[INFO] [stdout] 251 |     const Png_FILE: [u8; 4803] = [
[INFO] [stdout]     |           ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]     |
[INFO] [stdout] 251 -     const Png_FILE: [u8; 4803] = [
[INFO] [stdout] 251 +     const PNG_FILE: [u8; 4803] = [
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "53b5a5279776ecdc95af01da13e2b56288cc6b108806ec5cf5020c6f32f8d6e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53b5a5279776ecdc95af01da13e2b56288cc6b108806ec5cf5020c6f32f8d6e3", kill_on_drop: false }`
[INFO] [stdout] 53b5a5279776ecdc95af01da13e2b56288cc6b108806ec5cf5020c6f32f8d6e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+b03b3a7ec92682be2917540b679478d41c95a30c" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 800596c433816e15f5e01e8da0ca778707f31415e6a0df25582ee2eb992b13f6
[INFO] running `Command { std: "docker" "start" "-a" "800596c433816e15f5e01e8da0ca778707f31415e6a0df25582ee2eb992b13f6", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: write /var/lib/docker/containers/800596c433816e15f5e01e8da0ca778707f31415e6a0df25582ee2eb992b13f6/.tmp-hostconfig.json4156864274: no space left on device
[INFO] running `Command { std: "docker" "inspect" "800596c433816e15f5e01e8da0ca778707f31415e6a0df25582ee2eb992b13f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "800596c433816e15f5e01e8da0ca778707f31415e6a0df25582ee2eb992b13f6", kill_on_drop: false }`
[INFO] [stdout] 800596c433816e15f5e01e8da0ca778707f31415e6a0df25582ee2eb992b13f6