[INFO] fetching crate photon_decode 0.2.1...
[INFO] checking photon_decode-0.2.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate photon_decode 0.2.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate photon_decode 0.2.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate photon_decode 0.2.1
[INFO] finished tweaking crates.io crate photon_decode 0.2.1
[INFO] tweaked toml for crates.io crate photon_decode 0.2.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 5 packages
[INFO] [stderr]       Adding bytes v0.4.12 (latest: v1.6.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a633be42e5edefb1e4c4a4dcf9474e38a2ebe103f2b6e0f7623ed9f3be812023
[INFO] running `Command { std: "docker" "start" "-a" "a633be42e5edefb1e4c4a4dcf9474e38a2ebe103f2b6e0f7623ed9f3be812023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a633be42e5edefb1e4c4a4dcf9474e38a2ebe103f2b6e0f7623ed9f3be812023", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a633be42e5edefb1e4c4a4dcf9474e38a2ebe103f2b6e0f7623ed9f3be812023", kill_on_drop: false }`
[INFO] [stdout] a633be42e5edefb1e4c4a4dcf9474e38a2ebe103f2b6e0f7623ed9f3be812023
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28809317dbaff7aaa7af1a357cdfd493ba378457196842f64421a2d57587b7be
[INFO] running `Command { std: "docker" "start" "-a" "28809317dbaff7aaa7af1a357cdfd493ba378457196842f64421a2d57587b7be", kill_on_drop: false }`
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking photon_decode v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `photon_decode` is imported redundantly
[INFO] [stdout]  --> tests/integration_tests.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use photon_decode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^ the item `photon_decode` is already defined by prelude
[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 0.80s
[INFO] running `Command { std: "docker" "inspect" "28809317dbaff7aaa7af1a357cdfd493ba378457196842f64421a2d57587b7be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28809317dbaff7aaa7af1a357cdfd493ba378457196842f64421a2d57587b7be", kill_on_drop: false }`
[INFO] [stdout] 28809317dbaff7aaa7af1a357cdfd493ba378457196842f64421a2d57587b7be
[INFO] checking photon_decode-0.2.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate photon_decode 0.2.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate photon_decode 0.2.1 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate photon_decode 0.2.1
[INFO] finished tweaking crates.io crate photon_decode 0.2.1
[INFO] tweaked toml for crates.io crate photon_decode 0.2.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 5 packages
[INFO] [stderr]       Adding bytes v0.4.12 (latest: v1.6.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8dc5e5e79815b36404732d9f6ad0f441c08032dd5974016d90897ee82982cb86
[INFO] running `Command { std: "docker" "start" "-a" "8dc5e5e79815b36404732d9f6ad0f441c08032dd5974016d90897ee82982cb86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dc5e5e79815b36404732d9f6ad0f441c08032dd5974016d90897ee82982cb86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dc5e5e79815b36404732d9f6ad0f441c08032dd5974016d90897ee82982cb86", kill_on_drop: false }`
[INFO] [stdout] 8dc5e5e79815b36404732d9f6ad0f441c08032dd5974016d90897ee82982cb86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a09fe5fa9a7a319c9cdedc5eeb44b9bb41e2dfa36246609c8c2e5bd9af26f92d
[INFO] running `Command { std: "docker" "start" "-a" "a09fe5fa9a7a319c9cdedc5eeb44b9bb41e2dfa36246609c8c2e5bd9af26f92d", kill_on_drop: false }`
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking photon_decode v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `photon_decode` is imported redundantly
[INFO] [stdout]  --> tests/integration_tests.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use photon_decode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^ the item `photon_decode` is already defined by prelude
[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 0.92s
[INFO] running `Command { std: "docker" "inspect" "a09fe5fa9a7a319c9cdedc5eeb44b9bb41e2dfa36246609c8c2e5bd9af26f92d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a09fe5fa9a7a319c9cdedc5eeb44b9bb41e2dfa36246609c8c2e5bd9af26f92d", kill_on_drop: false }`
[INFO] [stdout] a09fe5fa9a7a319c9cdedc5eeb44b9bb41e2dfa36246609c8c2e5bd9af26f92d