[INFO] cloning repository https://github.com/kilroyjones/websocket-server-tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kilroyjones/websocket-server-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkilroyjones%2Fwebsocket-server-tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkilroyjones%2Fwebsocket-server-tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6266f0d4c605a6b0fc6e317d4ed5769ba7e3f3f6
[INFO] checking kilroyjones/websocket-server-tutorial against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkilroyjones%2Fwebsocket-server-tutorial" "/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/kilroyjones/websocket-server-tutorial on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kilroyjones/websocket-server-tutorial
[INFO] finished tweaking git repo https://github.com/kilroyjones/websocket-server-tutorial
[INFO] tweaked toml for git repo https://github.com/kilroyjones/websocket-server-tutorial written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kilroyjones/websocket-server-tutorial 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc165a47fe46d24b88bf038b095ccec01c08d8fc4a098c659c5362736d14cdf5
[INFO] running `Command { std: "docker" "start" "-a" "dc165a47fe46d24b88bf038b095ccec01c08d8fc4a098c659c5362736d14cdf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc165a47fe46d24b88bf038b095ccec01c08d8fc4a098c659c5362736d14cdf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc165a47fe46d24b88bf038b095ccec01c08d8fc4a098c659c5362736d14cdf5", kill_on_drop: false }`
[INFO] [stdout] dc165a47fe46d24b88bf038b095ccec01c08d8fc4a098c659c5362736d14cdf5
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f68f3c3420f769850628976fbbf9ac0c553e180a26cc4ed0710cc620ff0df4fc
[INFO] running `Command { std: "docker" "start" "-a" "f68f3c3420f769850628976fbbf9ac0c553e180a26cc4ed0710cc620ff0df4fc", kill_on_drop: false }`
[INFO] [stderr]     Checking websocket_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `a` is never read
[INFO] [stdout]   --> src/sha1.rs:21:18
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                  ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]   --> src/sha1.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                         ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]   --> src/sha1.rs:21:32
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                                ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `d` is never read
[INFO] [stdout]   --> src/sha1.rs:21:39
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                                       ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `e` is never read
[INFO] [stdout]   --> src/sha1.rs:21:46
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `a` is never read
[INFO] [stdout]   --> src/sha1.rs:21:18
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                  ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `b` is never read
[INFO] [stdout]   --> src/sha1.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                         ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `c` is never read
[INFO] [stdout]   --> src/sha1.rs:21:32
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                                ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `d` is never read
[INFO] [stdout]   --> src/sha1.rs:21:39
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                                       ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `e` is never read
[INFO] [stdout]   --> src/sha1.rs:21:46
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let (mut a, mut b, mut c, mut d, mut e) = (H0, H1, H2, H3, H4);
[INFO] [stdout]    |                                              ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fin`
[INFO] [stdout]    --> src/main.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let fin = (first_byte & 0x80) != 0;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_fin`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InvalidCharacter` is never constructed
[INFO] [stdout]   --> src/base64.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub enum Base64Error {
[INFO] [stdout]    |          ----------- variant in this enum
[INFO] [stdout] 10 |     InvalidCharacter,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Base64Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `decode` is never used
[INFO] [stdout]   --> src/base64.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Base64 {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn decode(&mut self, input: &str) -> Result<String, Base64Error> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fin`
[INFO] [stdout]    --> src/main.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let fin = (first_byte & 0x80) != 0;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_fin`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `InvalidCharacter` is never constructed
[INFO] [stdout]   --> src/base64.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub enum Base64Error {
[INFO] [stdout]    |          ----------- variant in this enum
[INFO] [stdout] 10 |     InvalidCharacter,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Base64Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `decode` is never used
[INFO] [stdout]   --> src/base64.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Base64 {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn decode(&mut self, input: &str) -> Result<String, Base64Error> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "f68f3c3420f769850628976fbbf9ac0c553e180a26cc4ed0710cc620ff0df4fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f68f3c3420f769850628976fbbf9ac0c553e180a26cc4ed0710cc620ff0df4fc", kill_on_drop: false }`
[INFO] [stdout] f68f3c3420f769850628976fbbf9ac0c553e180a26cc4ed0710cc620ff0df4fc