[INFO] fetching crate tytanic 0.3.0-rc.1...
[INFO] checking tytanic-0.3.0-rc.1 against try#73ffebff6f34db7eb167bf9edcf2afa19c3073e9 for pr-147841
[INFO] extracting crate tytanic 0.3.0-rc.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate tytanic 0.3.0-rc.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate tytanic 0.3.0-rc.1
[INFO] tweaked toml for crates.io crate tytanic 0.3.0-rc.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tytanic 0.3.0-rc.1 on toolchain 73ffebff6f34db7eb167bf9edcf2afa19c3073e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tytanic 0.3.0-rc.1 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" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c41c10f6a3569005511690492ee56badff63aadbe6c38b0434e13a4135227581
[INFO] running `Command { std: "docker" "start" "-a" "c41c10f6a3569005511690492ee56badff63aadbe6c38b0434e13a4135227581", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c41c10f6a3569005511690492ee56badff63aadbe6c38b0434e13a4135227581", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c41c10f6a3569005511690492ee56badff63aadbe6c38b0434e13a4135227581", kill_on_drop: false }`
[INFO] [stdout] c41c10f6a3569005511690492ee56badff63aadbe6c38b0434e13a4135227581
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+73ffebff6f34db7eb167bf9edcf2afa19c3073e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 13d75153454a5da4072f77ae78f28fc6c73c5cb5823680c1d89be13cdff3c38b
[INFO] running `Command { std: "docker" "start" "-a" "13d75153454a5da4072f77ae78f28fc6c73c5cb5823680c1d89be13cdff3c38b", kill_on_drop: false }`
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[INFO] [stdout] warning: struct `FailedJson` is never constructed
[INFO] [stdout]    --> src/json.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub struct FailedJson {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DurationJson` is never constructed
[INFO] [stdout]    --> src/json.rs:121:12
[INFO] [stdout]     |
[INFO] [stdout] 121 | pub struct DurationJson {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FailedJson` is never constructed
[INFO] [stdout]    --> src/json.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub struct FailedJson {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DurationJson` is never constructed
[INFO] [stdout]    --> src/json.rs:121:12
[INFO] [stdout]     |
[INFO] [stdout] 121 | pub struct DurationJson {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 44s
[INFO] running `Command { std: "docker" "inspect" "13d75153454a5da4072f77ae78f28fc6c73c5cb5823680c1d89be13cdff3c38b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13d75153454a5da4072f77ae78f28fc6c73c5cb5823680c1d89be13cdff3c38b", kill_on_drop: false }`
[INFO] [stdout] 13d75153454a5da4072f77ae78f28fc6c73c5cb5823680c1d89be13cdff3c38b