[INFO] fetching crate unsigned-varint 0.8.0...
[INFO] checking unsigned-varint-0.8.0 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-2
[INFO] extracting crate unsigned-varint 0.8.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate unsigned-varint 0.8.0 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unsigned-varint 0.8.0
[INFO] finished tweaking crates.io crate unsigned-varint 0.8.0
[INFO] tweaked toml for crates.io crate unsigned-varint 0.8.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate unsigned-varint 0.8.0 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded asynchronous-codec v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 279dfc7dc8970a548b71203fcde17a88ef85930b9d3cdaed9ccd0b264c989053
[INFO] running `Command { std: "docker" "start" "-a" "279dfc7dc8970a548b71203fcde17a88ef85930b9d3cdaed9ccd0b264c989053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "279dfc7dc8970a548b71203fcde17a88ef85930b9d3cdaed9ccd0b264c989053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "279dfc7dc8970a548b71203fcde17a88ef85930b9d3cdaed9ccd0b264c989053", kill_on_drop: false }`
[INFO] [stdout] 279dfc7dc8970a548b71203fcde17a88ef85930b9d3cdaed9ccd0b264c989053
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c2e673623a0b9989af47c2c3522fe9b01ddb44dad848a94033db5e45d32cfb9
[INFO] running `Command { std: "docker" "start" "-a" "3c2e673623a0b9989af47c2c3522fe9b01ddb44dad848a94033db5e45d32cfb9", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.190
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]    Compiling futures-util v0.3.29
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking unsigned-varint v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: the item `core` is imported redundantly
[INFO] [stdout]   --> src/decode.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | use core::{self, fmt};
[INFO] [stdout]    |            ^^^^ the item `core` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 | #![forbid(unsafe_code, unused_imports, unused_variables)]
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `unsigned-varint` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3c2e673623a0b9989af47c2c3522fe9b01ddb44dad848a94033db5e45d32cfb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c2e673623a0b9989af47c2c3522fe9b01ddb44dad848a94033db5e45d32cfb9", kill_on_drop: false }`
[INFO] [stdout] 3c2e673623a0b9989af47c2c3522fe9b01ddb44dad848a94033db5e45d32cfb9
[INFO] checking unsigned-varint-0.8.0 against try#36dbcaee1a55543dfc181be52a69d99ff46ff62f for pr-122960-2
[INFO] extracting crate unsigned-varint 0.8.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate unsigned-varint 0.8.0 on toolchain 36dbcaee1a55543dfc181be52a69d99ff46ff62f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unsigned-varint 0.8.0
[INFO] finished tweaking crates.io crate unsigned-varint 0.8.0
[INFO] tweaked toml for crates.io crate unsigned-varint 0.8.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate unsigned-varint 0.8.0 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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83dc022903ffbc32770418375cdca5a5954a08db0df691e8db41a883a59ff2af
[INFO] running `Command { std: "docker" "start" "-a" "83dc022903ffbc32770418375cdca5a5954a08db0df691e8db41a883a59ff2af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83dc022903ffbc32770418375cdca5a5954a08db0df691e8db41a883a59ff2af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83dc022903ffbc32770418375cdca5a5954a08db0df691e8db41a883a59ff2af", kill_on_drop: false }`
[INFO] [stdout] 83dc022903ffbc32770418375cdca5a5954a08db0df691e8db41a883a59ff2af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c33543cf26dd9fe3feca2ebbc3528833a972b21ed23b7f51d3e3852e0f752ff
[INFO] running `Command { std: "docker" "start" "-a" "2c33543cf26dd9fe3feca2ebbc3528833a972b21ed23b7f51d3e3852e0f752ff", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] skipping non-2021 edition `2018`
[INFO] running `Command { std: "docker" "inspect" "2c33543cf26dd9fe3feca2ebbc3528833a972b21ed23b7f51d3e3852e0f752ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c33543cf26dd9fe3feca2ebbc3528833a972b21ed23b7f51d3e3852e0f752ff", kill_on_drop: false }`
[INFO] [stdout] 2c33543cf26dd9fe3feca2ebbc3528833a972b21ed23b7f51d3e3852e0f752ff