[INFO] fetching crate json-web-token 0.2.0...
[INFO] checking json-web-token-0.2.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate json-web-token 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate json-web-token 0.2.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate json-web-token 0.2.0
[INFO] finished tweaking crates.io crate json-web-token 0.2.0
[INFO] tweaked toml for crates.io crate json-web-token 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate json-web-token 0.2.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded b64-url v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9c1b3baef192138bfaff3e6be11cd59670d5681abdf3c463550b9ec6b6f44432
[INFO] running `Command { std: "docker" "start" "-a" "9c1b3baef192138bfaff3e6be11cd59670d5681abdf3c463550b9ec6b6f44432", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c1b3baef192138bfaff3e6be11cd59670d5681abdf3c463550b9ec6b6f44432", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c1b3baef192138bfaff3e6be11cd59670d5681abdf3c463550b9ec6b6f44432", kill_on_drop: false }`
[INFO] [stdout] 9c1b3baef192138bfaff3e6be11cd59670d5681abdf3c463550b9ec6b6f44432
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b0bf0ad533f389c9990902ccc0387cc57e9024a56d6c0be43ff6fbbb63d7d2b
[INFO] running `Command { std: "docker" "start" "-a" "8b0bf0ad533f389c9990902ccc0387cc57e9024a56d6c0be43ff6fbbb63d7d2b", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]     Checking b64-url v0.5.0
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.6
[INFO] [stderr]     Checking sha2 v0.10.6
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking serde_json v1.0.94
[INFO] [stderr]     Checking json-web-token v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Bytes` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:112:9
[INFO] [stdout]     |
[INFO] [stdout] 111 |     use super::*;
[INFO] [stdout]     |         -------- the item `Bytes` is already imported here
[INFO] [stdout] 112 |     use bytes::Bytes;
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.61s
[INFO] running `Command { std: "docker" "inspect" "8b0bf0ad533f389c9990902ccc0387cc57e9024a56d6c0be43ff6fbbb63d7d2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b0bf0ad533f389c9990902ccc0387cc57e9024a56d6c0be43ff6fbbb63d7d2b", kill_on_drop: false }`
[INFO] [stdout] 8b0bf0ad533f389c9990902ccc0387cc57e9024a56d6c0be43ff6fbbb63d7d2b