[INFO] fetching crate mt-interface 0.0.1-dev...
[INFO] testing mt-interface-0.0.1-dev against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate mt-interface 0.0.1-dev into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate mt-interface 0.0.1-dev
[INFO] finished tweaking crates.io crate mt-interface 0.0.1-dev
[INFO] tweaked toml for crates.io crate mt-interface 0.0.1-dev written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mt-interface 0.0.1-dev on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd6194ca336130ca52482174f3b100a53569556d3b09c5ff0666943761ef2172
[INFO] running `Command { std: "docker" "start" "-a" "fd6194ca336130ca52482174f3b100a53569556d3b09c5ff0666943761ef2172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd6194ca336130ca52482174f3b100a53569556d3b09c5ff0666943761ef2172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd6194ca336130ca52482174f3b100a53569556d3b09c5ff0666943761ef2172", kill_on_drop: false }`
[INFO] [stdout] fd6194ca336130ca52482174f3b100a53569556d3b09c5ff0666943761ef2172
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2939d457b8578bf38c69047fdc922b468270e9ee4fb0245e6db8b4fe96e3ca7
[INFO] running `Command { std: "docker" "start" "-a" "b2939d457b8578bf38c69047fdc922b468270e9ee4fb0245e6db8b4fe96e3ca7", kill_on_drop: false }`
[INFO] [stderr]    Compiling mt-interface v0.0.1-dev (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `data_len`, `cmd`, and `data` are never read
[INFO] [stdout]   --> src/lib.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct MtCommand {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 75 |     data_len: u8,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 76 |     cmd: MtCommandId,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 77 |     data: [u8; 256],
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mt_cmd` and `fcs` are never read
[INFO] [stdout]   --> src/lib.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub struct GeneralSerialPacket {
[INFO] [stdout]    |            ------------------- fields in this struct
[INFO] [stdout] 97 |     mt_cmd: MtCommand,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 98 |     fcs: u8,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from_cmd` and `to_frame` are never used
[INFO] [stdout]    --> src/lib.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | impl GeneralSerialPacket {
[INFO] [stdout]     | ------------------------ associated items in this implementation
[INFO] [stdout] 102 |     fn from_cmd(mt_cmd: MtCommand) -> Self {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     fn to_frame(&self) -> Vec<u8> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "b2939d457b8578bf38c69047fdc922b468270e9ee4fb0245e6db8b4fe96e3ca7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2939d457b8578bf38c69047fdc922b468270e9ee4fb0245e6db8b4fe96e3ca7", kill_on_drop: false }`
[INFO] [stdout] b2939d457b8578bf38c69047fdc922b468270e9ee4fb0245e6db8b4fe96e3ca7
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06e16ae8370bee5481dba73b13ad016b1a77aeb18892134ab97d8062254d9915
[INFO] running `Command { std: "docker" "start" "-a" "06e16ae8370bee5481dba73b13ad016b1a77aeb18892134ab97d8062254d9915", kill_on_drop: false }`
[INFO] [stdout] warning: fields `data_len`, `cmd`, and `data` are never read
[INFO] [stdout]   --> src/lib.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct MtCommand {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 75 |     data_len: u8,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 76 |     cmd: MtCommandId,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 77 |     data: [u8; 256],
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mt_cmd` and `fcs` are never read
[INFO] [stdout]   --> src/lib.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub struct GeneralSerialPacket {
[INFO] [stdout]    |            ------------------- fields in this struct
[INFO] [stdout] 97 |     mt_cmd: MtCommand,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 98 |     fcs: u8,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from_cmd` and `to_frame` are never used
[INFO] [stdout]    --> src/lib.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | impl GeneralSerialPacket {
[INFO] [stdout]     | ------------------------ associated items in this implementation
[INFO] [stdout] 102 |     fn from_cmd(mt_cmd: MtCommand) -> Self {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     fn to_frame(&self) -> Vec<u8> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mt-interface v0.0.1-dev (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `data_len`, `cmd`, and `data` are never read
[INFO] [stdout]   --> src/lib.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub struct MtCommand {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 75 |     data_len: u8,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 76 |     cmd: MtCommandId,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 77 |     data: [u8; 256],
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mt_cmd` and `fcs` are never read
[INFO] [stdout]   --> src/lib.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub struct GeneralSerialPacket {
[INFO] [stdout]    |            ------------------- fields in this struct
[INFO] [stdout] 97 |     mt_cmd: MtCommand,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 98 |     fcs: u8,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from_cmd` and `to_frame` are never used
[INFO] [stdout]    --> src/lib.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | impl GeneralSerialPacket {
[INFO] [stdout]     | ------------------------ associated items in this implementation
[INFO] [stdout] 102 |     fn from_cmd(mt_cmd: MtCommand) -> Self {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     fn to_frame(&self) -> Vec<u8> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "06e16ae8370bee5481dba73b13ad016b1a77aeb18892134ab97d8062254d9915", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06e16ae8370bee5481dba73b13ad016b1a77aeb18892134ab97d8062254d9915", kill_on_drop: false }`
[INFO] [stdout] 06e16ae8370bee5481dba73b13ad016b1a77aeb18892134ab97d8062254d9915
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1f8fe1c8136473d86fa04041194fca4c0c39250e3a3161bae7998d9809ee96cf
[INFO] running `Command { std: "docker" "start" "-a" "1f8fe1c8136473d86fa04041194fca4c0c39250e3a3161bae7998d9809ee96cf", kill_on_drop: false }`
[INFO] [stderr] warning: fields `data_len`, `cmd`, and `data` are never read
[INFO] [stderr]   --> src/lib.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub struct MtCommand {
[INFO] [stderr]    |            --------- fields in this struct
[INFO] [stderr] 75 |     data_len: u8,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 76 |     cmd: MtCommandId,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 77 |     data: [u8; 256],
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `mt_cmd` and `fcs` are never read
[INFO] [stderr]   --> src/lib.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 96 | pub struct GeneralSerialPacket {
[INFO] [stderr]    |            ------------------- fields in this struct
[INFO] [stderr] 97 |     mt_cmd: MtCommand,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 98 |     fcs: u8,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `from_cmd` and `to_frame` are never used
[INFO] [stderr]    --> src/lib.rs:102:8
[INFO] [stderr]     |
[INFO] [stderr] 101 | impl GeneralSerialPacket {
[INFO] [stderr]     | ------------------------ associated items in this implementation
[INFO] [stderr] 102 |     fn from_cmd(mt_cmd: MtCommand) -> Self {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 117 |     fn to_frame(&self) -> Vec<u8> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `mt-interface` (lib) generated 3 warnings
[INFO] [stderr] warning: `mt-interface` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mt_interface-017536553f0f7a9f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mt_interface
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1f8fe1c8136473d86fa04041194fca4c0c39250e3a3161bae7998d9809ee96cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f8fe1c8136473d86fa04041194fca4c0c39250e3a3161bae7998d9809ee96cf", kill_on_drop: false }`
[INFO] [stdout] 1f8fe1c8136473d86fa04041194fca4c0c39250e3a3161bae7998d9809ee96cf