[INFO] fetching crate one_err 0.0.8...
[INFO] testing one_err-0.0.8 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate one_err 0.0.8 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate one_err 0.0.8
[INFO] finished tweaking crates.io crate one_err 0.0.8
[INFO] tweaked toml for crates.io crate one_err 0.0.8 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate one_err 0.0.8 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 18 packages to latest compatible versions
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.11.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e983cf392c98e5bfc04a977cf5dd8e9e9ca215fc1b303422339c2a424824de3d
[INFO] running `Command { std: "docker" "start" "-a" "e983cf392c98e5bfc04a977cf5dd8e9e9ca215fc1b303422339c2a424824de3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e983cf392c98e5bfc04a977cf5dd8e9e9ca215fc1b303422339c2a424824de3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e983cf392c98e5bfc04a977cf5dd8e9e9ca215fc1b303422339c2a424824de3d", kill_on_drop: false }`
[INFO] [stdout] e983cf392c98e5bfc04a977cf5dd8e9e9ca215fc1b303422339c2a424824de3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4d5e1eaad2b5246767f66c2297f544765261fc42d418050d72f5416f994fbc0
[INFO] running `Command { std: "docker" "start" "-a" "e4d5e1eaad2b5246767f66c2297f544765261fc42d418050d72f5416f994fbc0", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling one_err v0.0.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.15s
[INFO] running `Command { std: "docker" "inspect" "e4d5e1eaad2b5246767f66c2297f544765261fc42d418050d72f5416f994fbc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4d5e1eaad2b5246767f66c2297f544765261fc42d418050d72f5416f994fbc0", kill_on_drop: false }`
[INFO] [stdout] e4d5e1eaad2b5246767f66c2297f544765261fc42d418050d72f5416f994fbc0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a39e244107b408e6a891113e1dc1a293bcd975a25f9a8ac356aa88455525d9cf
[INFO] running `Command { std: "docker" "start" "-a" "a39e244107b408e6a891113e1dc1a293bcd975a25f9a8ac356aa88455525d9cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling one_err v0.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] error: calls to `std::str::from_utf8` with an invalid literal always return an error
[INFO] [stdout]    --> src/test.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |     let e = std::str::from_utf8(&[0, 159, 146, 150])
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^------------------^
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  the literal was valid UTF-8 up to the 1 bytes
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:1:9
[INFO] [stdout]     |
[INFO] [stdout]   1 | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(invalid_from_utf8)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `one_err` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "a39e244107b408e6a891113e1dc1a293bcd975a25f9a8ac356aa88455525d9cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a39e244107b408e6a891113e1dc1a293bcd975a25f9a8ac356aa88455525d9cf", kill_on_drop: false }`
[INFO] [stdout] a39e244107b408e6a891113e1dc1a293bcd975a25f9a8ac356aa88455525d9cf