[INFO] fetching crate aws-sigv4 1.3.4...
[INFO] checking aws-sigv4-1.3.4 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate aws-sigv4 1.3.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate aws-sigv4 1.3.4
[INFO] finished tweaking crates.io crate aws-sigv4 1.3.4
[INFO] tweaked toml for crates.io crate aws-sigv4 1.3.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate aws-sigv4 1.3.4 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate aws-sigv4 1.3.4 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8056054747b0b4ee4dd98bc14ef85b9bb1575d55a263625b26113ca88badc7ab
[INFO] running `Command { std: "docker" "start" "-a" "8056054747b0b4ee4dd98bc14ef85b9bb1575d55a263625b26113ca88badc7ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8056054747b0b4ee4dd98bc14ef85b9bb1575d55a263625b26113ca88badc7ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8056054747b0b4ee4dd98bc14ef85b9bb1575d55a263625b26113ca88badc7ab", kill_on_drop: false }`
[INFO] [stdout] 8056054747b0b4ee4dd98bc14ef85b9bb1575d55a263625b26113ca88badc7ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dca6ca79ccc4ff4adf936ec07b025b8674af96f012641b203bd484ccc877fd77
[INFO] running `Command { std: "docker" "start" "-a" "dca6ca79ccc4ff4adf936ec07b025b8674af96f012641b203bd484ccc877fd77", kill_on_drop: false }`
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[INFO] [stderr]     Checking aws-sigv4 v1.3.4 (/opt/rustwide/workdir)
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[INFO] [stdout] warning: variant `V4A` is never constructed
[INFO] [stdout]   --> src/http_request/test.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | enum Collection {
[INFO] [stdout]    |      ---------- variant in this enum
[INFO] [stdout] 25 |     V4,
[INFO] [stdout] 26 |     V4A,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Collection` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `v4a` is never used
[INFO] [stdout]   --> src/http_request/test.rs:46:19
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl SigningSuiteTest {
[INFO] [stdout]    | --------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 46 |     pub(crate) fn v4a(test_name: &'static str) -> Self {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.61s
[INFO] running `Command { std: "docker" "inspect" "dca6ca79ccc4ff4adf936ec07b025b8674af96f012641b203bd484ccc877fd77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dca6ca79ccc4ff4adf936ec07b025b8674af96f012641b203bd484ccc877fd77", kill_on_drop: false }`
[INFO] [stdout] dca6ca79ccc4ff4adf936ec07b025b8674af96f012641b203bd484ccc877fd77