[INFO] fetching crate lawn-protocol 0.3.0...
[INFO] checking lawn-protocol-0.3.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate lawn-protocol 0.3.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate lawn-protocol 0.3.0 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 lawn-protocol 0.3.0
[INFO] finished tweaking crates.io crate lawn-protocol 0.3.0
[INFO] tweaked toml for crates.io crate lawn-protocol 0.3.0 written to /workspace/builds/worker-0-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]      Locking 30 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding half v1.8.3 (latest: v2.4.0)
[INFO] [stderr]       Adding num-derive v0.3.3 (latest: v0.4.2)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[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] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lawn-constants v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 5ceed4224136dab6d8a08b5c6a51aba85e8640656d07db3e6a5df42c359492cb
[INFO] running `Command { std: "docker" "start" "-a" "5ceed4224136dab6d8a08b5c6a51aba85e8640656d07db3e6a5df42c359492cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ceed4224136dab6d8a08b5c6a51aba85e8640656d07db3e6a5df42c359492cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ceed4224136dab6d8a08b5c6a51aba85e8640656d07db3e6a5df42c359492cb", kill_on_drop: false }`
[INFO] [stdout] 5ceed4224136dab6d8a08b5c6a51aba85e8640656d07db3e6a5df42c359492cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8590c3985517cdaea2a0f3814cdff1f64bfe69d6b4ea393da999da4ed3bfba13
[INFO] running `Command { std: "docker" "start" "-a" "8590c3985517cdaea2a0f3814cdff1f64bfe69d6b4ea393da999da4ed3bfba13", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking lawn-constants v0.3.0
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking lawn-protocol v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated items `ID_MASK`, `first_id`, and `next_id` are never used
[INFO] [stdout]   --> src/config/mod.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Config {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 13 |     const ID_MASK: u32 = 0x7fffffff;
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub(crate) fn first_id(&self) -> u32 {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub(crate) fn next_id(&self, id: u32) -> u32 {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `ID_MASK`, `first_id`, and `next_id` are never used
[INFO] [stdout]   --> src/config/mod.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Config {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 13 |     const ID_MASK: u32 = 0x7fffffff;
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub(crate) fn first_id(&self) -> u32 {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub(crate) fn next_id(&self, id: u32) -> u32 {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 10.20s
[INFO] running `Command { std: "docker" "inspect" "8590c3985517cdaea2a0f3814cdff1f64bfe69d6b4ea393da999da4ed3bfba13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8590c3985517cdaea2a0f3814cdff1f64bfe69d6b4ea393da999da4ed3bfba13", kill_on_drop: false }`
[INFO] [stdout] 8590c3985517cdaea2a0f3814cdff1f64bfe69d6b4ea393da999da4ed3bfba13
[INFO] checking lawn-protocol-0.3.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate lawn-protocol 0.3.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate lawn-protocol 0.3.0 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lawn-protocol 0.3.0
[INFO] finished tweaking crates.io crate lawn-protocol 0.3.0
[INFO] tweaked toml for crates.io crate lawn-protocol 0.3.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cfef003e9a77c58b864d5e081cf3c0973a21e65b33f71ff478b20cbc8aea4931
[INFO] running `Command { std: "docker" "start" "-a" "cfef003e9a77c58b864d5e081cf3c0973a21e65b33f71ff478b20cbc8aea4931", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cfef003e9a77c58b864d5e081cf3c0973a21e65b33f71ff478b20cbc8aea4931", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfef003e9a77c58b864d5e081cf3c0973a21e65b33f71ff478b20cbc8aea4931", kill_on_drop: false }`
[INFO] [stdout] cfef003e9a77c58b864d5e081cf3c0973a21e65b33f71ff478b20cbc8aea4931
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99f0ae337903c341011d1a4a2a92e19b7c4f0b4dd043e25b6dff35197262df12
[INFO] running `Command { std: "docker" "start" "-a" "99f0ae337903c341011d1a4a2a92e19b7c4f0b4dd043e25b6dff35197262df12", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking lawn-constants v0.3.0
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking lawn-protocol v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated items `ID_MASK`, `first_id`, and `next_id` are never used
[INFO] [stdout]   --> src/config/mod.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Config {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 13 |     const ID_MASK: u32 = 0x7fffffff;
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub(crate) fn first_id(&self) -> u32 {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub(crate) fn next_id(&self, id: u32) -> u32 {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `ID_MASK`, `first_id`, and `next_id` are never used
[INFO] [stdout]   --> src/config/mod.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Config {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 13 |     const ID_MASK: u32 = 0x7fffffff;
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub(crate) fn first_id(&self) -> u32 {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub(crate) fn next_id(&self, id: u32) -> u32 {
[INFO] [stdout]    |                   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 12.10s
[INFO] running `Command { std: "docker" "inspect" "99f0ae337903c341011d1a4a2a92e19b7c4f0b4dd043e25b6dff35197262df12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99f0ae337903c341011d1a4a2a92e19b7c4f0b4dd043e25b6dff35197262df12", kill_on_drop: false }`
[INFO] [stdout] 99f0ae337903c341011d1a4a2a92e19b7c4f0b4dd043e25b6dff35197262df12