[INFO] fetching crate tokio-serde 0.6.1...
[INFO] checking tokio-serde-0.6.1 against try#169954edd744527414c631e9af1bbdc537b0cdf2 for pr-75192
[INFO] extracting crate tokio-serde 0.6.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate tokio-serde 0.6.1 on toolchain 169954edd744527414c631e9af1bbdc537b0cdf2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tokio-serde 0.6.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate tokio-serde 0.6.1
[INFO] tweaked toml for crates.io crate tokio-serde 0.6.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate tokio-serde 0.6.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded derivative v2.0.2
[INFO] [stderr]   Downloaded half v1.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ae8185de394a6cd03fa71bf2950e7ad971ea6dba61813622ce76abf3020780e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7ae8185de394a6cd03fa71bf2950e7ad971ea6dba61813622ce76abf3020780e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ae8185de394a6cd03fa71bf2950e7ad971ea6dba61813622ce76abf3020780e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ae8185de394a6cd03fa71bf2950e7ad971ea6dba61813622ce76abf3020780e", kill_on_drop: false }`
[INFO] [stdout] 7ae8185de394a6cd03fa71bf2950e7ad971ea6dba61813622ce76abf3020780e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+169954edd744527414c631e9af1bbdc537b0cdf2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ed16095e0586e32240191a80ade6be618049f16e84e41f2e0efbc1decadf4b5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7ed16095e0586e32240191a80ade6be618049f16e84e41f2e0efbc1decadf4b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking futures-core v0.3.4
[INFO] [stderr]     Checking futures-sink v0.3.4
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling proc-macro-nested v0.1.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.14
[INFO] [stderr]     Checking futures-io v0.3.4
[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]     Checking bytes v0.5.4
[INFO] [stderr]     Checking arc-swap v0.4.5
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking pin-project-lite v0.1.4
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking futures-channel v0.3.4
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking pin-project v0.4.8
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking tokio-serde v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.67s
[INFO] running `Command { std: "docker" "inspect" "7ed16095e0586e32240191a80ade6be618049f16e84e41f2e0efbc1decadf4b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ed16095e0586e32240191a80ade6be618049f16e84e41f2e0efbc1decadf4b5", kill_on_drop: false }`
[INFO] [stdout] 7ed16095e0586e32240191a80ade6be618049f16e84e41f2e0efbc1decadf4b5